SolarPlanetary LtE for CMO/ISMO #17 (CMO #391)  

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¤······Subject: Transit of Venus Project Newsletter #6

Received: Sat 19 Nov 2011 21:10 JST

Dear all,

This Saturday November 19 it's exactly 200 days until the last transit of Venus. The event is gaining momentum now: it's being featured in journals of science education, in astronomical calendars for 2012, and Sky & Telescope will kick off its transit coverage in January. New publications are released, like the latest book by Nick Lomb.


Transit of Venus: 1631 to the Present

This month a new book on the transit of Venus was published: Transit of Venus: 1631 to the Present. Written by Nick Lomb, former curator of astronomy at Sydney Observatory. It's a beautiful work, larded with large pictures and covering the entire history of the transit of Venus, from the first prediction by Johannes Kepler up to our own experiences in 2004. Nick also gives advice for observing the next transit in 2012 and discusses the importance of this transit to modern astronomy. An absolute must-read! For more information see

or our review of the book at


Transit of Venus workbook now in print

On our education resources page ( ), we list numerous resources that can be used by science teachers to engage their students in observing the 2012 transit. One of these resources, the Transit of Venus: Classroom activities, is now available in print. In forty problems, students get acquainted with the mechanics and periodicity of the transit, measuring distances using parallax and finding exoplanets analysing light curves of other stars. Though the workbook remains available as free download, we thought it beneficial for teachers if it also would possible to obtain hardcopies. The workbooks are printed in black-and-white and have a full-colour cover. To order, please go to


Testing the phone app

The free phone app that is being developed will soon be tested by a number of you. The phone app is an instrumental tool in our effort to measure the sun's distance using the observed times of start and/or end of the transit. Not only will it act as stopwatch, allowing you to find the times at which the limbs of Venus and the sun touch, it will also feature a simulation of the transit giving you the opportunity to practise. Next month, the test panel will give feedback on how the stopwatch and the simulation work. It's still possible to join the test panel! It's a unique chance to get a preview of the app and to propose improvements. For more information, take a look at

or contact me at


I invite you to follow us on Twitter (!/tov2012 ) or to join our group on Facebook to keep in touch with other transit enthusiasts. If this email was forwarded to you, and you too would like to receive our monthly newsletter, just send an email to and we'll keep you in the loop.



Steven van ROODE (The Netherlands)


¤······Subject: Jovian GRS on 10 Nov and 12 Nov

Received: Sat 19 Nov 2011 20:32 JST

Hi All, Here is a gif moving image of the GRS on 10 and 12 November: See the relative variation and convection of the area of the GRS during the period:


Best Wishes



¤······Subject: Solar images 15th Nov2011

Received: Sat 19 Nov 2011 08:45 JST

Hi guys

here are a couple of images from the 15th. The sun is only 20deg alt at best from southern UK and has another 5 deg to dip over the next month. That's 2 months lower that 20 degrees. Fortunately thanks to my neighbour removing their final tree, I will be able to access the sun for a couple of hours around midday throughout this time , if it shines of course. I am finding 80 inch fl single stack image are bit lack lustre at this low altitude, so these are double stack


The plasma clouds on the coloured image are quite orderly compared the chaos around of the many spots in the mono image.

 Best wishes

 Dave TYLER (Bucks, the UK)


¤······Subject: solar images 13 November 2011

Received: Fri 18 Nov 2011 07:50 JST

Hi guys here are a couple of images from the rare sunny day of the 13th Nov. Plenty of action.



Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: pink spot

Received: Thu 17 Nov 2011 17:59 JST

Hi Christophe a good observation, and a good reason to do more IR images. I have attached the LRGB component set from the 15th for reference.


best wishes

 Dave TYLER (Bucks, the UK)



¤······Subject: Jupiter images 15th november 2011

Received: Thu 17 Nov 2011 13:53 JST


here my Jupiter image from november 15th, 2011 with 8" Newton.

Seeing was high-frequent and cirrus clouds made trouble, too. But it was a night without fog, so I did my best...


Silvia KOWOLLIK (Ludwigsburg, GERMANY)



¤······Subject: Jupiter images 14th november 2011

Received: Thu 17 Nov 2011 07:29 JST

Hi all, again poor seeing for these.

An interesting thing though - Dave commented about the pink STB spot today. This spot was dark a few months ago, and looks to follow a typical evolution of those cyclonic ovals. But what looks interesting to me here as well is its brightness in near infrared.

I find a striking similarity between this aspect, and this evolution, and that of the SEB barge of last year before the revival. It was as well slightly pink in RGB and bright in IR. Although I don't expect the STB spot to start a revival ;) there's maybe some lesson to learn ? How to explain the bright albedo in IR ?

Best wishes,

Christophe PELLER (Nantes, FRANCE)





¤······Subject: Jupiter 15-Nov-2011

Received: Wed 16 Nov 2011 22:49 JST

Hi Guys we were lucky to have a short spell of clear sky this early evening in some parts of the UK. Seeing was good for the altitude, but transparency was poor, requiring more gain and less frames than normal.  Note the pink spot in the SPR.


Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: Comparison between h-α and CaK views, Nov 15th

Received: Wed 16 Nov 2011 19:41 JST

Hi all,

A good spell of November sunshine afforded me opportunity to capture the Sun on the 15th in both hydrogen-alpha and calcium-K. Both images are 9-pane mosaics and of particular note are the bright flare patches in AR11346 (lower left AR). From recollection, it isn't that common to see h-alpha flare activity in the CaK view: for example:

 The activity corresponded with a GOES x-ray peak.


Clouds rolled in before I could get a decent high magnification shot of the region in CaK. I do have a couple taken through clouds which I have yet to process though.

Best regards,

Pete LAWRENCE (Selsey, the UK)


¤······Subject: Uranus, 14th november 2011

Received: Wed 16 Nov 2011 04:18 JST


Hi all, here is an image of Uranus taken last night. Seeing just fair enough to get an oval shape but no detail is caught. According to the PVOL data, the spot is just at the bottom left limb ;)  

Image taken with the Baader RG610 during 15 mn with exposures of 200 ms. 3400 raw frames stacked over 4500.

Will try again. Maybe next time I'll use my RG630 to get more contrast.



Christophe PELLIER (Nantes, FRANCE)





¤······Subject: Re: RE: [marsobservers] Re: Mars 11/2, excellent seeing

Received: Tue 15 Nov 2011 17:28 JST


Cc vzv03210<>, cmo<>

Hi Gary,

Once again, many thanks for all of the supplementary scientific information!

I have reviewed more images from the 2010 apparition, and also MGS maps made by Helen Wang on her homepage at later Ls seasons. It looks to me now that the clear yellow line is very steady during time so I would now more agree with Sean and Roger when they say that this is merely a brighter albedo region.

Best wishes,

Christophe PELLIER (Nantes, FRANCE)


Message du : 11/11/2011 09:02

De : "Gary Rosenbaum " <>

A :

Sujet : RE: [marsobservers] Re: Mars 11/2, excellent seeing


Hi Roger, Christophe, Jim


If your primary interest in Mars is strictly in observing or imaging the

planet you may wish to skip this message as I admittedly am straying from

that path.


I think you will find the answer to your questions about Sean’s excellent

image in the MARCI weather map.

I am not seeing a clear indication of dust activity in the area in question

in the November 2nd images. The MARCI images show an orographic water ice

cloud over Alba Patera, a gravity wave induced water ice cloud over the

Mareotis Fossae and Tempe Fossae areas (low elevation cloud) and more water

ice clouds crossing into Acidalia.


The elevation of the water ice condensation layer in the atmosphere varies

depending on the atmospheric temperature. Water ice clouds should not be

considered only as high elevation clouds. When discussing the equatorial

cloud belt one needs to think in terms of the global atmospheric circulation

pattern. The equatorial cloud belt is a result of the upwelling branch of

the Hadley cell circulation. Since the equatorial region is always warmer

than the polar region the air has to rise to high elevations before water

vapor will condense. The Tharsis bulge may have relatively little effect on

the high elevation water ice clouds within in the equatorial cloud band but

for the surface winds within the lowest scale height, up to ~10 km, the

Tharsis bulge has a very significant effect on atmospheric circulation and

the regional weather patterns. In polar regions where the atmospheric

temperatures are much colder the condensation layer occurs at lower

elevations. Alba Patera is a very massive but low elevation volcano located

at high northern latitude and its water ice orographic clouds often form at

an elevation of ~6 km as opposed to the ~12-20 km orographic clouds that

form over the taller Tharsis volcanos further south. The main difference is

in the warmer atmospheric temperatures at the lower latitude of the Tharsis

volcanos as compared to the colder temps at the latitude of Alba which is

close to the region of polar circulation.


Roger is correct that there is an inverse relation between dust activity and

water ice activity in a global sense. When one peaks the other is near

minimum activity. On a regional or local scale you will often find both

types of activity occurring at the same time in different areas of the

planet. However, some types of weather patterns show a clear association

between dust and water ice clouds. Many of these events may be too small to

be visible in ground based images. For a recent example of what appears to

be an association see the MARCI map for October 24 and 25, 2011, western

side of Acidalia at the polar cap boundary. Several of the recent MARCI maps

show dust flows protruding onto the north polar cap or flowing across the

cap. The larger flows may be visible in amateur images as a notch in the cap

or even a division of the cap.


I'm not sure I understand why the blue clearing was invoked as an

explanation regarding Sean's image but admittedly my understanding of the

phenomena may be lacking. It’s a rare day when you see it even mentioned in

the papers. About all I know is that when a blue clearing occurs dark albedo

surface features are seen to varying degrees in blue light.


I sometimes lament those days seemingly long gone when we relied on the ALPO

doctrine for identifying dust storms; bright in red, obscures previously

seen surface features and moves in position over time. By definition,

identification would usually require at least two days of observations to

satisfy the requirement of movement.



From: []

On Behalf Of Roger Venable

Sent: Thursday, November 10, 2011 7:18 AM


Subject: Re: [marsobservers] Re: Mars 11/2, excellent seeing


Christophe --

Thanks for this info. I can see that you have

spent considerable time studying it, and I am

glad that you are sharing your ideas with this group.


I agree with all the general comments that you make about dust.


However, I'm not sure I'm in full agreement

regarding interpretations of MGS images and in

our interpretations of some of the best

Earth-based images such as those by Damian. I

note, for example, that the equatorial cloud band

usually goes right over Arsia Mons without paying

any attention to the Tharsis bulge. This suggests

to me that the model that indicates that the

Tharsis bulge affects regional air mass movements

is overstated. (Not wrong... just overstated.)

Also, I note that the folks at Malin Space

Science Systems did not report any difficulty in

differentiating dust from clouds, and the very

reference you make, showing the circumpolar cloud

bands, clearly differentiates the circumpolar

dust storms from the circumpolar clouds.


I know your thoughts about blue clearing, so I

don't want to dwell on that too much in this thread.


To me, this is very interesting stuff. I am sure

that I have a lot more to learn about it.

However, in this forum we need to be sure that

our conversation is relevant to observing Mars,

and not specifically about spacecraft

observations and atmospheric theory except

insofar as they are relevant to our observations.

I say this only to offer to take this discussion

out of the group, if you like. The moderators may

want to chime in on this (Who knows -- maybe

they'll want us to continue it here!)

Best regards,



¤······Subject: Full h-alpha disk, November 12, 2011

Received: Mon 14 Nov 2011 19:07 JST

Hi all,

Lots of solar captures, no time to process them and send them out unfortunately. However, the appearance of the Sun over the weekend warranted making an extra effort. A massive prominence visible in the south east and an incredibly long wrapping 'filaprom' were just two of the amazing sights on offer.

Best regards,

Pete LAWRENCE (Selsey, the UK)


¤······Subject: call for observation...

Received: Mon 14 Nov 2011 13:40 JST

Hi all, On Nov. 29, Jupiter will occult the 8.7 mag Star (K2) SAO 92734. Observers with telescopes larger then 8" may be able to capture the star on its reappearance around 18:30 UT +/- 20 minutes with methaneband filter.

I will try it with DMK 31AF03.AS, CH4 filter and exposertimes around 1,5sec with the 80 cm Cassegrain at Observatory Zollern-Alb in Germany.

I am interested in Observations from other Observers.


Silvia KOWOLLIK (Ludwigsburg, GERMANY)


¤······Subject: Jupiter and Galilean satellites 2011.11.08

Received: Mon 14 Nov 2011 06:30 JST


I could observe that night in a temporary rest from the windy or cloudy weather here since weeks. Seeing was good but transparency bad (too humid, the 2nd RGB set was almost half bright as the 1st one) :

Please note the smaller spots circulating North of GRS. Best images are the 1st RGB and the first red layer - not the green one, sign that the seeing could have been better.

Some details could be made out on the satellites themselves (the elongated shape might be a sign of my collimation off a bit?):

Last, a montage of 3 movies for the satellites in white light and one RGB for Jupiter, showing a nice family picture:


Marc DELCROIX (Tournefeuille, FRANCE)


¤······Subject: Jupiter on 12th november with test of WinJupos "planetary derotation"  

Received: Sun 13 Nov 2011 23:33 JST

Hi all,

As Damian I tried to make opportunity of a rare clear night to image Jupiter and Uranus. Seeing was very poor and Uranus images showed nothing.

Jupiter was caught in 2x2 binning.

In these hard conditions I made my first real tests of the new WinJupos function "correction of planetary rotation". My first essay on an old 1 mn avi file was not conclusive. However, with longers avi files of several minutes, last night's attempts looked successful despite the seeing. I made a 4 mn IR800 image, which looks better than the first minute without derotation, and a 10 mn CH4 image that also looks better than its first two minutes with no derotation (the SNR is especially good, there are 1200 frames instead of 240 as usual !).

It would deserve more testing under steady sky...

Best wishes,

Christophe PELLIER (Nantes, FRANCE)

PS I have changed the file format of the images to follow John's advices.


¤······Subject: Jupiter Blink animation

Received: Sat 12 Nov 2011 23:03 JST

Hi guys you can tell I have cloudy skies, but at least it gives time for reflection of a different sort !

I found another pair if images, this time 5 days apart, with a common "pictorially static" feature and a couple of "entangled" features a long way apart.


The material following the GRS has bunched up behind it.

 Strange behaviour by Jove.

 best wishes

 Dave TYLER (Bucks, the UK)


¤······Subject: Jupiter 9-10 November

Received: Sat 12 Nov 2011 07:32 JST

Hi Guys We had a couple of clear night round the full moon, seeing was poor but interesting never the less .


I hope the two frame GIF runs ok for you, it did when I test-sent it to myself  it was actually running in the email as it does in windows media player. The two frames are about the same longitude for the SPR storm at the bottom of the image, but 24 days apart. It's fascinating to watch the changes in longitude of various features. Note how the blue swirl with white core keeps pace with the Barge yet other features like the storms near BA behave quite differently.  It takes a few oscillations before you get the rhythm man. Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: Mars 2011 Nov. 7 0510 & 0650.

Received: Fri 11 Nov 2011 20:46 JST

With regards.

David GRAY (Durham, the UK)


¤······Subject: uranus last 9th from SMk

Received: Fri 11 Nov 2011 20:12 JST

Good morning sir,

May I transmit you an update of the last 9th observation in which during I could perform a second capture 2H30 after in order to catch the clear patch.

Here is an update of the same day observation of Uranus when the clear patch was setting at the planet edge (2H30 after the first sketch).

May have a look on the notes mentioned on the sketch.

I was surprised to see a clear patch greater than of the patch captured 8 days before (on the 1st).

But the Gemini staff reported recently that the spot is growing in size and clearly.

The spot patch should be accessible to regular observers, I think.

Spot is growing but EZ is almost faded in parallel.

For your perusal.


Stanislas MAKSYMOWICZ (Ecquevilly, FRANCE)


¤······Subject: Jupiter J111110 Around GRS

Received: Fri 11 Nov 2011 13:34 JST

Jupiter J111110


Here you will especially note the area of hi-res GRS: There are several white small spots which gather around the GRS.



¤······Subject: Re: On EPSC-DPS

Received: Fri 11 Nov 2011 07:24 JST

Dear Masatsugu,

Please find attached again the essay, with the information you requested in the first paragraph.

Yes this is Marc on the photo in front of his Saturn poster. The photo has been taken by Jean-Pierre Prost (Jean-Pierre is one the very best french planetary imagers - it looks like the ISMO never received Mars images from him, when the next season start I will tell him about us !). All other photos have been taken by John, unless he appears himself on them.

We have been informed a few days ago on the HST Jupiter list about the passing of Don's wife... this is a very sad news; she was quite young... this disease is really terrible. My mother had the same more than ten years ago now but it has been discovered quite early and she's still well today.

I will answer about the recent Mars discussion later; what about writing a note again about this? I had noted this strange aspect before, but did not make any enlarged research until these past days. Did we publish something in ISMO or CMO in 2007 already?

Best wishes,

Christophe PELLIER (Nantes, FRANCE)


¤······Subject: Mars 2011 Nov 6

Received: Fri 11 Nov 2011 00:32 JST

Dear colleagues,

I hereby contribute my first Mars image for this season. It was obtained with an old scope of mine recently equipped with a new secondary.

Best regards,

Johan WARELL (Skivarp, SWEDEN)


¤······Subject: Solar image 9-Nov-2011

Received: Thu 10 Nov 2011 08:41 JST

Hi Guys We had a late clearing today, even though the sun was only 12 degrees high in the sky, seeing was quite acceptable. I had a visual first and spotted this awesome river of flares. I was able to grab a 4 frame mosaic before the sun went behind a shrub and long grass.


Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: Re: [marsobservers] Re: Mars 11/2, excellent seeing

Received: Wed 9 Nov 2011 18:46 JST


Cc: Masatsugu MINAMI<>, Masami MURAKAMI<>


Hi Roger,

Yes these are clever objections. Here are some elements I would bring to discuss them:

1) Warming and dust.

The warming of the atmosphere is indeed a key in the development of big storms, by the "feed-back" mechanism: more dust = warmer temperatures = stronger winds = more dust. However, I don't think that temperature is a relevant cause for small, local dust clouds. Local winds do lift dust from the surface so we don't need more explanation for this (moreover, at first place, I think that this is the dust that causes the warming, and not the warming, that causes the dust). At the boundary of the polar circulation, there are a lot of small dust clouds.

2) Obscuration

A very important point. But, if the dust cloud is small and if it circulates over a surface free from dark markings, there is no possible obscuration... this is the case here.

3) Movement. In this case, we don't see any movement in latitude. But, nothing proves that there is no movement in longitude either, and this is my theory.

4) For the correspondence of the paths of dust and winds: on Mars, the topography plays a strong role, and in the case here, the curious line is found due north of the Tharsis bulge. From everything I have seen from high-res probe images or scientific theories (as well as amateur images), the circulation here is confined in a pure west-east direction because of this topography.

There are more elements to be found in the "cross-equatorial storms" model, that shows that polar winds are going to be able to go southward only after they have passed the Tharsis bulge, when they arrive above the lowland of Acidalia. If you remember my conference at the IWCMO meeting in 2009 :

where there was this model map :

Here are MGS blue images taken near equinox in 2002, showing long strips of white clouds moving at the boundary of the polar circulation (surely at the polar jetstream) :

Damian's images from december 7th, 2007, showing identical white strip and the curious "dusty" line:

(there are many more from the same days from various observers)

Finally, talking about "dust cloud" is maybe too exaggerated here. I would say this is just a lifting of dust carried out by a polar jetstream that is mainly "made of" white clouds....


Christophe PELLIER (Nantes, FRANCE)


Le 09/11/2011 04:53, Roger Venable a écrit:


Christophe, Jim, and Sean --


I find this all a bit confusing. There are objections to every way of

looking at it.


Sean's image reminds me of John Hood's images of Elysium taken on Oct

25 and Oct 26, 2011. The interesting features -- Elysium in John's

image and an E-W band in Sean's image -- are brightest in red, less

bright in green, and faintly visible in blue. This is the way that

dust is supposed to look, except that dust is often completely

invisible in blue. (Of course, two of the cardinal features of dust

are (1) that it is an obscuration of darker features, and (2) that

this obscuration moves. Neither John's nor Sean's image clearly shows

these two characteristics of dust.)


I'd be more satisfied that these were dust if they were invisible in blue.


As for the possibility of mixed cloud and dust, is this not

problematic? Dust results in rapid warming of the atmosphere by

absorption of insolation. Clouds occur in cool areas of the

atmosphere where crystals form out of supersaturated air. The

presence of dust should make clouds unlikely in the same province.


Also, it is hard to imagine how dust's location and movement would

correspond so closely to that of cloud. Dust is mostly in the "mixing

layer" of the atmosphere, which is the lowest 10,000 feet. In

contrast, water vapor clouds are much higher in the atmosphere. Wind

directions at low elevations are often very different from wind

directions at high elevations. For example, Earth's jet streams'

directions often have little resemblance to the directions of the

surface winds directly under them. And, a low pressure area at low

elevations corresponds to a high pressure area at high elevations,

and these two have nearly opposite wind directions.


So, I am puzzled by the images. And I do not have confidence in the

explanations that I've seen. But maybe we'll figure this out.



¤······Subject: mars 5 nov

Received: Wed 9 Nov 2011 08:15 JST

Hi, Under an average condition, I took one image. PLS see it.


Sadegh GHOMIZADEH (Tehran, IRAN)


¤······Subject: Retroreflectors on Mars

Received: Tue 8 Nov 2011 23:51 JST

   Dear all areoholics, Attached is the same montage as shown in my LtE in Japanese in the CMO Japanese version #389 (Web only) entitledNix Olympica; what shines is her bare skin? her makeup? or her thin clothing?”…That was a simulation to test how a huge Martian volcanic plateau covered with retroreflective material looks at opposition. A patch of retroreflective sheet (for bicycle reflector) was stuck on my Mars globe just to cover the Olympus Mons. Then the globe was lit with a colimated light and was photographed at full-Mars lighting conditions (ι=0°). You can see ”Nix Olympica” shining from morning, through noon, till evening, irrespective of the changing tilt of “Olympus Mons” toward us/the Earth.


In response to Dr. Masatsugu MINAMI's request I am also attaching here the montage with the simulation images taken at a larger phase angle condition (ι=12°). You'll no longer find “Nix Olympica” anywhere on the Mars globe.

 I agree with Dr. MINAMI that the prominent antisolar brightening of Olympus Mons is a kind of “Opposition Effect”. In explaining opposition effect“shadow hiding”generally comes first. When looking at a rough surface in a direction directly away from the sun, shadows are hidden by the objects (casting the shadows) themselves. The antisolar region looks brighter because it contains less shadow and more sunlit surfaces than the surrounding area.

 As seen from the Earth at opposition, however, Mars’ apparent size will be only 25 arc seconds or so at most, so small area (practically an “antisolar point”) that we'll see whole the Martian disk shining glaringly by the shadow hiding effect. On that dazzling full-Mars, Olympus Mons stands out brilliantly to be Nix Olympica; this means we need different mechanisms than shadow hiding to explain the special antisolar brightening of the huge volcano.

 “A Retroreflector on Mars Model” seems to be the most simple and effective solution for the various characteristics of the Nix Olympica Phenomenon; observable only in a short limited period centered around the opposition day, shining throughout the daytime wherever located on Martian disk with the gigantic plateau's varying angle viewed from the Earth, the brightness weakens significantly even under the least amount of misty covering matter,…etc, etc.

 Dr. Masatsugu MINAMI has often suggested in the CMO issues that some special volcanic materials forming the flank of Olympus Mons might cause the prominent antisolar brightening at opposition. This may be called “Shining Bare Skin Hypothesis”. 

 Some other highest Martian volcanoes also show remarkable brightening near zero phase angle frequently simultaneously with Olympus Mons; Montes Olympus, Ascraeus, Arsia, Pavonis and Elysium are ranked as the top five in order in the list of mountains on Mars by height, each one has shown considerable surge in brightness at certain opposition periods. Their extremely high elevations, I think, may contribute to the selective sedimentation of appropriately finer airborne dust particles thrown up in recent storms to produce stronger coherent backscatter by which highly efficient retroreflection can occur. This “Shining Makeup Hypotesis” may be indirectly testified by observing polarization properties of the Nix Olympica Phenomenon. Or the Martian dust samples brought back by the future manned landing missions may directly prove it.  Good Seeing with Excellent Scopes!

 Reiichi KONNAÏ (Fukushima, JAPAN)


¤······Subject: Re: Sunspot 1339 11:15 UT Nov 7th sketch

Received: Tue 8 Nov 2011 17:28 JST

Hi Masatsugu

Thanks for including my solar sketch on your website :-)


National Coordinator for Astronomers Without Borders

National Rep The European Association for Astronomy Education

Pre Order Our Book on Lunar Sketching:


¤······Subject: Sunspot 1339 11:15 UT Nov 7th sketch

Received: Tue 8 Nov 2011 00:53 JST

Very large amount of spots on the solar disc today. Serious looking AR / Prom / Filament drama on the SE limb would have loved time to catch it in pastel.

Had just a little time slot to sketch the big one in pencil.

Attached Sunspot 1339 sketch

November 7th, 11:15 UT

200 mm dob FL 1,200 mm

14 mm Tele Vue Radion eyepiece 85×

Baddar Astro Solar Filter

Seeing - Wilson scale 3.5




¤······Subject: Re: [marsobservers] Re: Mars 11/2, excellent seeing

Received: Mon 7 Nov 2011 22:35 JST


Cc Masatsugu MINAMI<>, Masami MURAKAMI<>

Hi Jim,

Although I agree with you that it looks like dust, there is something curious about this - the same detail was visible during several days in early december of 2007 (check any image gallery, images from the "Barbados team" for example). The line did not seem to move as days passed.

I would go for a mixed atmospheric phenomena (dust+water vapor) trailed by the springtime polar jetstream, in a geographical corridor closed at south by Tharsis relief...


Christophe PELLIER (Nantes, FRANCE)

Le 06/11/2011 06:29, jtmelka a écrit :

Hi Sean,

You really had some seeing! Yes, I don't know what else would cause that long bright streak other than dust. The blue probably indicates that there is water vapor mixed in with the dust. And that might be expected since the seasonal NPC is subliming water>ice to vapor now and high winds can occur in those regions. Things look clear to the South and Solis Lacus is dark as coal! These images deserve a lot of study. Keep em comin. Thanks.



¤······Subject: Full disk from today

Received: Mon 7 Nov 2011 07:06 JST

Sun’s full disk with the usual setup






¤······Subject: mars 4 nov

Received: Sat 5 Nov 2011 00:04 JST

Hi, After big RAINSQUALL on 4 November, condition was average so that I took one image of Mars. PLS see it.


 Sadegh GHOMIZADEH (Tehran, IRAN)


¤······Subject: Mars 11/2/2011

Received: Fri 4 Nov 2011 22:00 JST

Very good seeing conditions on the morning of 11/2 allowed use of very long imaging focal length. Note the cloud band along the northern hemisphere (+45°N), visible in each color channel; perhaps a bit of dust kicked up from the subliminating NPC.

Clear skies,

Sean WALKER (Imaging Editor, Sky & Telescope, NY)


¤······Subject: Fw: active proms galore

Received: Fri 4 Nov 2011 09:33 JST

Hi Guys there was a lot of active proms around this limb on the 1-Nov.



I see on Spaceweather one preceded a very large spot that I have yet to witness.

 Best Wishes

 Dave TYLER (Bucks, the UK)


¤······Subject: Jupiter 2011-10-27 (evening) with 8"

Received: Thu 3 Nov 2011 12:57 JST

Hi all,

here my Jupiter image with 8" Newton from 2011-10-27-23-19-23 UT under mad conditions.


 Silvia KOWOLLIK (Ludwigsburg, GERMANY)


¤······Subject: Jupiter 1-Nov-2011

Received: Wed 2 Nov 2011 23:12 JST

Hi Guys a clear sky at last, for a short while anyway . Pity about the seeing but good to get out in it.


Interesting activity on the northern edge of the GRS.

 Best wishes

 Dave TYLER (Bucks, the UK)


¤······Subject: Uranus spot last 1st Nov.

Received: Wed 2 Nov 2011 15:36 JST

> Dear sir,

> Just performing back some observations about Uranus with the 305mm last

> evening.

> I presume a clear patch had been collected with the similar expected

> location, this could be the spot trace.

> However this can't be verified after some times (1H after, 2H, etc...)

> deep

> moisture and bad seeing was occurring severely at the end.

> The brightness is on a level above the EZ fillet, however the EZ fillet is

> easier to catch due to its size.

> This needs good images that were for a short time fortunately.

> The sketches given shows highly amplified contrasts level indeed but the

> grey tones shown expect to reproduce an actuality.

> For your perusal.

 Stanislas MAKSYMOWICZ (Ecquevilly, FRANCE)


¤······Subject: Mars last 1st Nov. and Uranus Neptune on 31st Oct.

Received: Tue 1 Nov 2011 20:18 JST

> Good morning,

> Please find my last observations about:

> Uranus:

> performed with pretty images with the 305mm cassegrain and 500x.

> Not the spot reported but still albedo variations especially in south

> hemisphere.

> Nevertheless this clear patch at the edge on the planet, a clear fillet 2

> hours later.

> For your perusal

> Neptune:

> performed with pretty images with the 305mm cassegrain and 500x.

> Still the clear cap as shown and albedo difference between hemispheres.


> Mars:

> performed with the 305mm cassegrain and 340x.

> Chryse Xanthe Tharsis Thitonius Tempe area with attenuated contrast levels

> both with the yellow and the light blue filters.

> North cap is well defined and bordered from Ismenius to Mare Boreum.

> Argyre appears at the first look whitish.

> All for your perusal.

> Weather now still cloudy rainy sky well closed.

> Hope to catch a period for uranus with the MC value of 300degrees.

> Faithfully

Stanislas MAKSYMOWICZ (Ecquevilly, FRANCE)


¤······Subject: Jupiter 2011-11-01

Received: Tue 1 Nov 2011 15:12 JST

Hi all, here my Jupiter images under average conditions.


Please note the small dark spot following the GRS: it looks like the shadow of a moon, but Guide8 shows no moon at that position...


Silvia KOWOLLIK (Ludwigsburg, GERMANY)


¤······Subject: Re: Uranus 2011.10.30

Received: Mon 31 Oct 2011 23:18 JST

Marc -

   Nice try Marc! No matter what, Uranus proves to be one of the most difficult object to image. Keep trying especially working around methane light!

     I am involved in photoelectric photometry. I would like to see if I can pick up some variations in the near-infrared (NIR) light where methane absorbs the most. I think it is possible if there is enough contrast. The peak spectral response that I will be working on is at 800nm.

      In fact, I did some NIR photometry on Oct. 31, 2011 at 3:00 UT and the spot wasn't out. But I want to get the base photometric readings without the spot on the disk. So I can compare that with the spot on the disk to see if there is any difference in readings.

      Also, Uranus is near to a sixth magnitude star. I imaged it with a methane filter at 890nm by using the 200mm telephoto lens. The sixth magnitude star is visible as a reference in methane light but not Uranus. Next night, I will try to image again with a spot on the disk. If there is enough contrast, Uranus should be visible faintly.

      Let’s see what will happen!    More later...

  Frank J MELILLO (Holtsville, NY)


¤······Subject: Uranus 2011.10.30

Received: Mon 31 Oct 2011 21:56 JST


Uranus under good seeing but with a very short session interrupted by clouds (one single red+infrared movie with only ~500 images):

The spot observed by Gemini is not seen (it should be on the bottom edge, and the more processed image shows too many artifacts). The "soft" image alone:


Marc DELCROIX (Tournefeuille, FRANCE)


¤······Subject: Jupiter J111023.J111024.J111028.J111030

Received: Mon 31 Oct 2011 12:51 JST

The planet Jupiter is now at opposition (more exactly at 02 h on 29 Oct).



¤······Subject: Full disk from today

Received: Sun 30 Oct 2011 08:17 JST

Full disk with PST and Skynyx 2.0M


color version





¤······Subject: Solar Images 28-Oct-2011

Received: Sat 29 Oct 2011 06:39 JST

Hi Guys



Here's a first for me, solar images on the day of imaging! Ar 11330 spot and surroundings was spectacular, with its mate Ar 11333.

 Best wishes

 Dave TYLER (Bucks, the UK)


¤······Subject: Jupiter le 25 octobre 2011

Received: Fri 28 Oct 2011 05:45 JST



Under average conditions, with GRS setting and BA rising (well visible

on methane image) :


A montage with from left to right Ganymede, Europa, Jupiter and Io:


Marc DELCROIX (Tournefeuille, FRANCE)


¤······Subject: the sun 20-Oct-2011

Received: Thu 27 Oct 2011 18:58 JST

Hi Guys Here is an image of AR 1324 & 25 . Quite a busy part of the sun.


Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: jupiter 22 oct

Received: Mon 24 Oct 2011 07:33 JST

Hi Guys

 On 22 I had good seeing; you know in Tehran good seeing is Rare but EXCELLENCE seeing is DOUBLE Rare.


Anyway I took some images: PLS see one of them. Ciao

Sadegh GHOMIZADEH (Tehran, IRAN)


¤······ Subject: Re: May I ask a favour of you?

Received: Mon 24 Oct 2011 01:51 JST

  Dear Masatsugu,

No problem, I can write a review about the EPSC meeting, indeed, it will be worth talking about it; although I have mostly followed information about the gas giants, not Mars (too little free time).

I'm sorry I have not sent any Mars images yet this season, but due to the unfavourable orientation of my current location,  I can not see it before it reach south meridian at or before sunrise, and this is currently not the case... fortunately Jean-Jacques is producing fine images for Europe!

Best wishes,

Christophe PELLIER (Nantes, FRANCE)


¤······Subject: solar images 15-Oct-2011

Received: Mon 24 Oct 2011 00:11 JST

Hi Guys here is a couple from the 15th.


Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: solar images 14-Oct-2011

Received: Sun 23 Oct 2011 21:52 JST

Hi Guys plenty of solar active regions, shown were with Coronado 90 DS



Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: Mars Ak22Oct11

Received: Sun 23 Oct 2011 13:12 JST

These are set of the Mars images from this morning. It seems that there is a long (dust?) cloud to the south of the npc, and furthermore the npc shows a dust disturbance inside.



¤······Subject: mars 22 oct

Received: Sun 23 Oct 2011 12:52 JST


On 22 October seeing in Tehran was good I took one image PLS see you it.


Sadegh GHOMIZADEH (Tehran, IRAN)


¤······Subject: Jupiter 20-Oct-2011

Received: Sat 22 Oct 2011 23:56 JST

Hi Guys I was lucky with a 90 minute clear slot and good seeing at 47deg alt. The small white spot following the GRS was very bright , reminding me of a solar Ellerman Bomb. The GRS is sporting a couple of very large "crop circles".


Ganymede was imaged at 23:06ut and processed separately. It was placed with the aid of Jupos graphics.

Best wishes

Dave TYLER (Bucks, the UK)


¤······Subject: Jupiter images, 21 october 2011

Received: Sat 22 Oct 2011 21:47 JST

Hi all,

Weird seeing yesterday morning but the multispectral images in 2× binning went well.

I have tried a few false-color data with the non-visible wavelengths. Also the comparison between B and UV is interesting.

Have a nice week-end everyone!

Christophe PELLIER (Nantes, FRANCE)


¤······Subject: Re: Mars 2011/10/21

Received: Fri 21 Oct 2011 17:11 JST

Very nice Jean-Jacques, it seems that you have caught the Tharsis orographic clouds!

Tous vos emails en 1 clic avec l'application SFR Mail sur iPhone et Android - En savoir plus.

Christophe PELLIER (Nantes, FRANCE)


¤······Subject: Mars 2011/10/21

Received: Fri 21 Oct 2011 17:06 JST

 Hello, Here is Mars on 2011/10/21

 The seeing was average. T = -1°C


Jean-Jacques POUPEAU (Essonne, FRANCE)


¤······Subject: Jupiter J111016, J111017, J111020

Received: Fri 21 Oct 2011 13:15 JST

Hi All, It seems the BA has not been bright these days.



¤······Subject: Mars of this morning

Received: Fri 21 Oct 2011 2:07 JST

> Dear sir,

> Here is my contribution about Mars observed this morning with the MC150mm

> before going to office.

> North cap well whitish and brilliant

> Elysium rising

> Zephyria seems hazzy in yellow-green

> South polar area seems hazzy both colors.

> Difficult to say more.

> For your perusal.

> Faithfully

Stanislas MAKSYMOWICZ (Ecquevilly, FRANCE)


¤······Subject: Mars Ak15Oct11

Received: Wed 19 Oct 2011 16:14 JST

MINAMI-sama, These days the weather has been fine (the first time ever since I came here), and I have got a set of Mars Images the other day. (Unfortunately however I am suffering from the high-blood-pressure.)



¤······Subject: Mars 2011/10/17

Received: Mon 17 Oct 2011 19:16 JST

Hello, Here is Mars on 2011/10/17


Jean-Jacques POUPEAU (Essonne, FRANCE)


¤······Subject: Mars 2011/10/16

Received: Sun 16 Oct 2011 18:09 JST

Hello, Here is Mars on 2011/10/16


Jean-Jacques POUPEAU (Essonne, FRANCE)


¤······Subject: mars 13 oct.

Received: Sun 16 Oct 2011 08:43 JST

Hi, Under average condition I took one image. PLS see them.


Sadegh GHOMIZADEH (Tehran, IRAN)


¤······Subject: Mars observations last 15th

Received: Sat 15 Oct 2011 17:11 JST

> Dear sir,


> I have re-installed the cassegrain of 305mm and used it this last night on

> Uranus and Mars.

> Here are the reports communicated to the CMO/ Mars section.


> Uranus:

> EZ is obvious and still faint but thin

> some albedo variations on the hemispheres.


> Mars:

> The north cap is bright, well visible and darkly bordered as shown.

> Chaos is not clear and whitish

> Libya appears bright and Syrtis Major rises with contrast attenuated.

> Amazonis Olympica appears clear in bluish color

> Eridania appears bright at the first look.

> Generally the limb of Mars appears hazy (all colors) and Syrtis Major

> area

> remains on attenuated contrast level (all colors, rather in blue-green).

> Generally speaking images were rather good sometimes to average mainly.

> For your perusal.

 Stanislas MAKSYMOWICZ (Ecquevilly, FRANCE)


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