Solar & Planetary LtE Now for CMO/ISMO #71 (CMO #445)

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 LtE#444

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¤····Subject: North Polar Spiral Cloud

Received: 15 March 2016 at 21:05 JST

 

Dear all,

Attached here is the latest image by the ESA's Mars Express Visual Monitoring Camera showing a northern summer north polar cloud fronts with a large wine-color eye, though the spiral structure is vague.
Note also the two lighter projections just off the dawn terminator (blue arrows). Probe images with this type of angle are very informative, showing the zone of critical dawn hours where significant meteorological phenomena can occur.

   Best,

 

Reiichi KONNAÏ (Fukushima, JAPAN)

 

 

 

¤····Subject: Solar images to 12th-Mar-2016

Received: 15 March 2016 at 09:57 JST

 

Hi Guys

We had a fair bit of sunshine this week, with very variable seeing, but there were some usable moments in there somewhere. It was mainly about AR 2513 and AR2519 neither that spectacular in white light, but they certainly stirred up the plasma !

 


 


 


 


 


 


 


Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Mars, 13th March IR

Received: 14 March 2016 at 13:34 JST

 

One more image - Mars through a 750nm longpass filter, showing the surface features a little more clearly.
cheers,

 

Link:
http://www.acquerra.com.au/astro/gallery/mars/20160313-184044/m20160313-184044utc.png

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160313/AWs13Mar16.jpg

 

Anthony WESLEY (NSW, AUSTRALIA)

 

 

 

¤····Subject: Mars 2016/03/14 0154UT

Received: 14 March 2016 at 12:34 JST

 

Hi all,

Another patch of poor weather over the last week, and it looks like it may continue. I took a chance on getting up early and managed to squeeze in a few captures between cloud, before being clouded out totally. In the circumstances, I dropped back to the 2x powermate. Other than NP, Tharsis and equatorial cloud, some cloud also noted over high southern latitudes.

Best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160314/CFs14Mar16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars, 13th March

Received: 14 March 2016 at 09:07 JST

 

Seeing was a little better this morning, good enough for a colour RGB image.
Some equatorial clouds can be seen as well as a number of surface features.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20160313-184724/m20160313-184724utc.png

cheers,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160313/AWs13Mar16.jpg

 

Anthony WESLEY (NSW, AUSTRALIA)

 

 

 

¤····Subject: Mars: March 12, 2016

Received: 14 March 2016 at 02:04 JST

 

Hi -

   I have attached my latest image of Mars March 12, 2016.

  Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160312/FMl12Mar16.jpg

 

Frank J MELILLO (Holtsville, NY)

 

 

 

¤····Subject: RE: Martian Northern Summer North Polar Spiral Clouds

Received: 14 March 2016 at 01:53 JST

 

Dear Reiichi

I am very sorry to hear of your loss. Although I have not met you personally yet, I appreciate that these times are never easy. My thoughts and best wishes are with you.

Thank you for your comments regarding the spiral clouds. I am hoping that I get better conditions in the next few days, and I will see if there is any activity visible.

Best regards,

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Martian Northern Summer North Polar Spiral Clouds

Received: 14 March 2016 at 01:30 JST

 

Dear Clyde,

Thanks a lot for your concern. I am all right, recovering from the loss of a spouse syndrome.


Northern summer polar spiral clouds, I think, are probably ephemeral, each one starts early in the morning and fades away late in the afternoon, means that we may find a new north polar spiral cloud every Martian day. The shape and the scale of the cloud may change from day to dayattached here is the one captured on 09 March 2016 by the Mars Express' Visual Monitoring Camera which can be classified as "Level 2(eye(s)filled in)" of Christophe PELLIER's classification of the observed activity of the cloud fronts. Please refer to the Christophe's note: Cloud fronts on Mars in northern summeractivity observed in 2014 ISMO 2013/14 Mars Note (#02) CMO#429 25 Dec. 2014

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn4/CMO429.pdf

Hoping your Big Guns will soon capture the polar spiral clouds,

 
Reiichi KONNAÏ (Fukushima, JAPAN)

 

 

 

¤····Subject: Mo02 07 11Mar_16

Received: 14 March 2016 at 00:54 JST

 

Mars Images on 2, 7, 11 March 2016.

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160311/Mo11Mar16.jpg

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160307/Mo07Mar16.jpg

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160302/Mo02Mar16.jpg

 

Yukio MORITA (Hiroshima, JAPAN)

 

 

 

¤····Subject: Mars images, 13 March 2016

Received: 13 March 2016 at 20:43 JST

 

Hi all,
Quite correct seeing this morning on Mars. Orographic cloud over Olympus Mons.

http://www.astrosurf.com/pellier/M2016_03_13-CPE

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160313/CPl13Mar16.jpg

 

Christophe PELLIER (Nantes, FRANCE)
Planetary astronomy and imaging

 

 

 

¤····Subject: North Polar Spiral cloud

Received: 13 March 2016 at 14:58 JST

 

Dear Reiichi,

 

I hope you are well. Thank you for your recent image and comments on the CMO LTE regarding the North Polar Spiral Cloud. I believe this area will be rotating into view for me in the next few days. Unfortunately we are experiencing another period of bad weather in my area, although we do definitely need the rain! How long lasting are these clouds normally? ie are they fairly short lived, or do they last for an extended time period?

 

Best regards,

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars 12th March, time correction

Received: 13 March 2016 at 11:22 JST

 

My earlier Mars image had a completely wrong time and date on the image the script I use for this was out of date and didn't read the winjupos timestamp properly.

Here is the corrected image with the appropriate date and time.

cheers, Anthony

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160312/AWs12Mar16.jpg

 

Link:
http://www.acquerra.com.au/astro/gallery/mars/20160312-190506/m20160312-190506utc.png

 

----------------------------------------------------

Subject: Mars, 12th March

Sent: Sunday, March 13, 2016 9:32 AM

 

Hi all, here is an image of Mars from this morning (March 12 UT) through
an IR750nm filter. There is an interesting bright streak visible near
the left (following) limb

regards, Anthony

ps please let me know if this list is not up to date, this is the first
use of it since the Mars appartition in 2014.

 

Anthony WESLEY (NSW, AUSTRALIA)

 

 

 

¤····Subject: North Polar Spiral Cloud

Received: 12 March 2016 at 23:41 JST

 

Dear all,
 
Please find attached the image of the well-developed north polar spiral cloud, one of the northern summer staples, captured by the Mars Express Visual Monitoring Camera/ESA.


  Best,

Reiichi KONNAÏ (Fukushima, JAPAN)

 

 

 

¤····Subject: Jupiter images - 8 March 2016 Double transit

Received: 11 March 2016 at 04:39 JST

 

Hi all,
Here are some images of the double transit taken under fair seeing. These are some of my very first images with the ASI224MC, and the setting of the equipment is not yet settled...

 


http://www.astrosurf.com/pellier/j2016-03-08_01-38_rgb_cp
http://www.astrosurf.com/pellier/j2016-03-08_01-54_ir_cp

Best wishes,

 

Christophe PELLIER (Nantes, FRANCE)
Planetary astronomy and imaging

 

 

 

¤····Subject: Solar imahges to  6-Mar-2016

Received: 9 March 2016 at 00:09 JST

 

Hi Guys

Scraping the bottom of the barrel as far as sunspots go, but at least a decent but faint prominence came up for grabs on the 6th. It took about 4 attempts to get a lucky cloud gap big enough for a full length imaging run before the blue stuff disappeared altogether. Seeing was less then fair with granulation being seen only by autostakkert. Ha activity was quite spectacular.

 

Best wishes

 


 


 


 


 


 


 

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: March 06 2016 observation   

Received: 7 March 2016 at 02:36 JST

 

attached this morning's sketch, conditions unfavorable for imaging.

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160306/DFl06Mar16.jpg

 

Denis FELL (Kennedy, SK, CANADA)

 

 

 

¤····Subject: Mars - March 4, 2016   

Received: 7 March 2016 at 02:35 JST

 

Dear Masatsugu and Masami,

Attached is a set of Mars images from 4 March.   

Looks like I'm in for some cloudy skies and rain over the next week but hopefully the weather will improve soon after that.

 Best wishes,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160304/WFl04Mar16.jpg

 

Bill FLANAGAN (Houston, TX)

 

 

 

¤····Subject: Mars 2016/03/06 0236UT   

Received: 6 March 2016 at 17:48 JST

 

Hi, all

Mars capture from this morning.

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160306/CFs06Mar16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars - Feb.29th, March  

Received: 5 March 2016 at 05:40 JST

 

Hi Mr. Minami and All!, Here are my most recent sessions from feb. 29th and march 1st, my latest session of jupiter from march 3rd also.

 



http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160301/EMr01Mar16.jpg

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160229/EMr29Feb16.jpg

 

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

 

 

 

¤····Subject: Mars 2016/03/05 0202UT 

Received: 5 March 2016 at 15:44 JST

 

Hi all,

 

Mars capture from this morning, with Elysium region bright and prominent. Gale crater "outcrop" visible? Conditions reasonable, although the contrast arc was quite bad- please be wary of interpretation of limb detail.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160305/CFs05Mar16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: SOLAR IMAGES TO 29-Feb-2016 

Received: 3 March 2016 at 17:50 JST

 

Hi Guys this selection of solar antics clears my backlog. Some days of useful seeing, I say useful when I can glimpse the convection cells amid the turbulence at 126 inch efl on the ZWO ASI120’s little pixels, with my vintage AP178T.

 

best wishes

 


 


 


 


 


 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Mars 2016/03/03 0245UT 

Received: 3 March 2016 at 13:09 JST

 

Hi all,

Mars IR capture from this morning. I am not sure what has happened, but I seem to have picked up a problem with the colour on my ASI224MC, so am not in a position to submit a colour image today. I will try and resolve as a matter of urgency.

 

Contrast arc/rind note: I also attach a sharpened image where I have not removed the contrast arc. On my last imaging session (1 March), towards the end of the session I slewed the scope to the other side of the mount, as Mars is approaching the meridian during the early morning sessions. Unfortunately the camera cable came under tension and pulled out of the camera(I hadn't had a cup of coffee yet….). I am not sure if the camera was damaged somehow, hence the colour problem this morning? However, note that the contrast arc this morning is very evident in the IR image, but is OUTSIDE the limb. The inside of the limb appears good, and unaffected by contrast arc, although the limb itself is maybe not as sharp as usual. This is obviously a much more favourable situation to deal with as it is easy to remove, and does not influence the detail on the planet. The factors that I can think of that have changed:

a) The scope was swung across to the other side of the mount , so the orientation of the main optical train has also swung over?

b) Mirror flop? However, I do keep the mirror locked as I use an electric focuser.

c) I flipped the X and Y axes in Firecapture to keep my normal orientation on the screen. However, this should not impact on the arc in any way?

d) When I slewed across and the cable came under tension, I am aware that I have some very small play in the imaging train. ie from the rear mount on the scope, the barlow and the filterwheel. It is possible that the alignment of this imaging train was adjusted slightly with the tension. The camera is screwed firmly into the filterwheel, so there is no play there.

Any comments on this are welcome(Martin, Roger, Jim?). I go along with the diffraction theory as proposed, but I think this may also hint at optical alignment as a factor? Either way, this, in my mind, is a better situation to deal with compared with the inner arc.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160303/CFs03Mar16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: solar images to 25-Feb-2016

Received: 3 March 2016 at 11: 05 JST

 

Hi Guys

 

Clearing a backlog of images from 14th to 25th Feb with more to come from the end of Feb. Some days of fairly nice seeing.

I notice the spots are generally nearer the equator now, indicating the approaching minimum.

 

Best wishes

 


 


 


 


 


 


 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Mars images

Received: 3 March 2016 at 06:32 JST

 

Dear Sirs,

Please find the attached Mars image set from
the 1st March 2016.

Taken in poor seeing. The image is poor but it is amazing what AutoStakkert can extract from what I considered a hopeless set of AVI's.

Best regards,


http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160301/MJs01Mar16.jpg

 

Mark JUSTICE (Melbourne, AUSTRALIA)

 

 

 

¤····Subject: Mars - February 27, 2016

Received: 3 March 2016 at 00:26 JST

 

Dear Masatsugu and Masami,

Attached is a set of Mars images I took from my backyard on 27 February.

The seeing was not very good that night and with Mars lower in the sky this year, I only have about 30 minutes to acquire images of Mars as it peeks through a hole in the tree line when it crosses the meridian. 

I hope to be able to contribute more images as this year's apparition continues.

Best wishes,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160227/WFl27Feb16.jpg

 

Bill FLANAGAN (Houston, TX)

 

 

 

¤····Subject: Mars 2016/03/01 0248UT

Received: 2 March 2016 at 03:55 JST

 

Hi all,

Mars capture from this morning.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160301/CFs01Mar16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars 2016/02/29 0214UT

Received: 29 February 2016 at 13:38 JST

 

Hi all,

Mars capture from this morning with conditions a bit improved.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160229/CFs29Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Fwd: Mars images

Received: 29 February 2016 at 07:12 JST

 

Dear Sirs,
Just checking if perhaps the following email was lost, as can happen.

Best regards,

 -------- Original Message --------

Subject: Mars images

Date: Tue, 23 Feb 2016 16:22:08 +1100

 

Dear Sirs,

Please find the attached Mars image set from the 21st February 2016.

Taken in fair seeing through the less dense gaps in cloud.

Best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160221/MJs21Feb16.jpg

 

Mark JUSTICE (Melbourne, AUSTRALIA)

 

 

 

¤····Subject: Mars 2016/02/27 0313UT

Received: 27 February 2016 at 17:35 JST

 

Hi all,

The real advantage of the ASI1224MC colour camera really comes into its own during the rather poor weather conditions we are currently having(extending over the last week or so) in my area. Often there is only a window of a few minutes to capture one or two avis, before conditions cloud over or deteriorate(I had very heavy dew conditions this morning). Once we move into autumn and closer to opposition I am expecting(at least hoping) conditions will settle. I will then definitely consider some RGB imaging with the ASI174MM or ASI120MM.

 

Again, the image set from this morning is somewhat limited in fine detail. The brilliant white ice/cloud in or over the Hellas basin is again prominent and  there is indication of some detail in the basin(well seen in the IR image). Maybe someone can comment on whether this is a raised strip of mountains on the floor of the basin? A further question: I am tending to interpret bright areas in the green channel as likely physical ice(either water or CO2) deposits on the surface, whereas the blue channel shows clouds(also either water or CO2). Is this correct?

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160227/CFs27Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Northern Summer Polar Spiral Clouds

Received: 27 February 2016 at 16:36 JST

 

Dear All,

Now the Martian season is reaching λ=116
LsYes, we can expect the seasonal first emergence of the north polar cyclones (or “the northern polar spiral clouds” or “the northern summer cloud fronts” a la Christophe PELLIER). Better refer to Christophe’s excellent notes
A Pre-Polar Spiral Cloud at Early Northern Summer (ISMO 11/12 Mars Note (15)) CMO#412  25 July 2013
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn4/CMO412.pdf
Cloud-fronts Activity on Mars in Northern SummerA General Overview ( ISMO 2013/14 Mars Note (#01) CMO#428  25 Nov. 2014
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn4/CMO428.pdf
Cloud fronts on Mars in northern summeractivity observed in 2014 ISMO 2013/14 Mars Note (#02) CMO#429 25 Dec. 2014
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn4/CMO429.pdf

Northern summer polar spiral clouds are known to be most active when they appear on the dawn terminator, then they thin and degrade with the passing time to leave only  remnants in the late afternoon, so we should say it’s rather unfavorable for us now to detect the spiral clouds, because the morning terminator is over farside of the western limb. Please find attached a montage with this apparition’s possible very early detection by the MRO MARCI of the arc-shaped afternoon remnants of the northern summer polar cloud front at λ=110Ls compared with the 2014 apparition ones.

 

   Good Seeing!

 
Reiichi KONNAÏ (Fukushima, JAPAN)

 

 

 

¤····Subject: Mars - February 23rd

Received: 27 February 2016 at 00:09 JST

 

Hi Mr. Minami and All!,

Here is my latest observation of Mars on february 23rd and of Saturn.

 


 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160223/EMr23Feb16.jpg

 

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

 

 

 

¤····Subject: Mars 2016/02/26 0247UT

Received: 26 February 2016 at 13:26 JST

 

Hi all,

I have been frustrated the last few mornings with total cloud cover. This morning cloud cover was also extensive. However there was a small gap where I managed to obtain one colour and one IR capture. Detail is poor, but the brilliant while cloud/ice in or over the Hellas basin is seen.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160226/CFs26Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Jupiter 2015-02-25 00:42 UT

Received: 26 February 2016 at 03:54 JST

 

Hi All,
 Haven't posted a planet image for a while! Last night gave some reasonably stable planetary conditions with the loss of the jet stream over the
UK (we don't miss it!). Local seeing conditions weren't optimal but good enough for a decent capture session. Here's the fourth run result from the session.

 


Best regards,

Pete LAWRENCE (Selsey, WS, the UK)

 

 

 

¤····Subject: Mars 2016/02/25

Received: 25 February 2016 at 17:05 JST

 

Hello,
Here is Mars on 2016/02/25
The  seeing was very bad and the transparency was average.
The planet was only 23° elevation.
T = -0.2°C

Regards

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160225/JPp25Feb16.jpg

 

Jean-Jacques POUPEAU (Essonne, FRANCE )

 

 

 

¤····Subject: Mars 2016/02/22 0314UT

Received: 24 February 2016 at 04:47 JST

 

Hi all,

Ongoing poor predawn seeing conditions on 22 Feb, but submitting "for the record".

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160222/CFs22Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars 2016/02/21 0257UT

Received: 22 February 2016 at 00:39 JST

 

Hi all,

Up early to see if I could get a bit better seeing conditions but unfortunately still mediocre conditions. Attached 2 image sets, with conditions deteriorating further towards dawn. Hellas is very prominent as well as some cloud over Syrtis Major.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160221/CFs21Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: A Drawing of Mars

Received: 21 February 2016 at 21:43 JST

 

Dear all,
I am back at the red planet again! Mars is still fantastic, pleasing to my eyes. Attached here is my first drawing of Mars in this apparition. My new weapon, Mead's 40cm SCT seems to be great in optical performance.
  Good Seeing with excellent telescopes!

 

P.S Also attaching a snap of my new 40cm SCT ("A Wiring Inferno" with the anti-fog heaters, etc.)

 


 

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160218/Kn18Feb16.jpg

 

Reiichi KONNAÏ (Fukushima, JAPAN)

 

 

 

¤····Subject: Mars - February 19th

Received: 20 February 2016 at 21:29 JST

 

Hi Mr. Minami and All!,

Here is my latest session of Mars from february 19th and a session of the ring planet Saturn after my Mars session on the 19th.

 


Clear Skies.

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160219/EMr19Feb16.jpg

 

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

 

 

 

¤····Subject: Mars 2016/02/20 0247UT 

Received: 20 February 2016 at 18:12 JST

 

Hi all,

A capture of Mars from this morning, with the planet now at 8" diameter.

 

A few notes:

a)  When initially looking at the live  image on my screen, I was again of the impression that the seeing conditions were poor. The main albedo features were not particularly clear and the bright limb was seen to be "shaking" substantially.

b) I was therefore pleasantly surprised with the outcome of the final image. I am taken a number of captures(when time allows), processing and then selecting the best for further processing. With seeing conditions poor, I am getting quite a range of quality after initial processing and discarding the majority.

c) Even the live image on screen indicated fairly bright cloud over the Chryse equatorial region. This hasn’t come out very clearly in the colour image, but can be seen to some extent in the blue image.

d) The following(right )limb remains exceptionally bright, probably indicating extensive cloud over the Tharsis region?

e) Nice, distinct equatorial cloud is seen over the preceding(eastern- please correct me if I have this wrong) side of the Arabia region. I am not sure if anyone noticed what appeared to be quite a distinct, isolated cloud in the Arabia region on the 17 Feb image?

f) Some finer albedo detail is showing on the southern and following(western) regions of Arabia. The "half hexagon" that I seem to recall from the last apparition is quite evident in the colour and red images.

g) Interesting bright region just south of the NPC which seems to be brightest in the red channel. Would this be dust deposits at the the edge of the NPC?

h) There seems to be fairly extensive cloud activity at the southern extremity of Mars. I am not sure if this is due to the Argyre Basin, or more extensive  cover. Comments welcome

i) Probably one of my nicer images for the apparition so far, given the current conditions, but I am really hoping for better seeing conditions as we move closer to opposition.

 

Best regards,

 

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160220/CFs20Feb16.jpg

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Mars - February 17th

Received: 19 February 2016 at 00:48 JST

 

Hi Mr. Minami and All!,

Here is my most recent session of Mars on february 17th but under below average conditions low in elevation.

Here is Jupiter and the moon Ganymede transiting before my session with Mars,

 


Clear Skies.


http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2016/160217/EMr17Feb16.jpg

 

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)