Solar & Planetary LtE Now for CMO/ISMO #62 (CMO #436)

 Not every email is necessarily cited in the PDF’s CMO LtE

To see the preceding ones, click

 LtE#435

CMO/ISMO Index Page

The latest is at the top


¤····Subject: Re: Thank you for your excellent Note for CMO

Received: 30 June 2015 at 05:32 JST

 

Dear Masatsugu,
Many thanks for your compliments. You are welcome to correct the orientation of the figures...

I will be more rigourous next time ;)
I'm going to check the reference you are indicating.
Best wishes, I'm thinking about a next note for CMO 436....
Christophe
   
========================================

Le 25/06/2015 12:12, Masatsugu MINAMI a écrit :

Dear Christophe,

 

Thank you very much for the excellent Note for CMO #435. Reading it twice, I am very impressed with the content. I think it is the first time for me to be very conscious about the indication that the Terby crater is located at the northern end of the south polar cap. It may nicely conform with the result given M GIURANNA et al ʺPFS/MEX observations of the condensing CO2 south polar cap of Marsʺ Icarus 197 (2008) 386402 (cf. page Ser2-1022 in CMO #353 - 25 Dec 2008 issue). I thought your present note must be one of the finest analyses among the forgoing ones in the CMO.

  Unfortunately though we have finished the edition but I think it is not yet complete. The hyperlinks are not all right because the Adobe PDF we are using is one of older editions, and so any linkage is sometimes fails. We intend to replace it by a new one in a near future.

  We are sorry but inform you that we employed “south is up” without your permission on your Figures.

 

Thank you again for your nice note, and look forward to your further 2013/2014 Note.

 

With best wishes,

Masatsugu

========================================

Christophe PELLIER (Nantes, FRANCE)

 

 

 

¤····Subject: Solar Images 24-25-26-27-June-2015

Received: 28 June 2015 at 08:47 JST

 

Hi Guys The weather allowed a fair run of images AR 2371. I have put an image from each imaging day onto a montage for quick reference to changes during its journey across the disc. The image is quite large and will take three ctrl +’s if you want a closer look. Seeing over the days was variable with occasional glimpses of reasonable stability. Results from the 24th were best.

 


 

 


 


 


 

 


 

 

Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Saturn: equatorial spot ephemeris (and my own image of it from 2015.06.21)

Received: 26 June 2015 at 04:56 JST

 

Dears,

 

A spot in Saturn's equatorial zone has been observed simultaneously by several observer on June 21st, here is my image of it under average conditions:

 


 

http://www.astrosurf.com/delcroix/images/planches/s20150621i-21h36.7UT-MDe.jpg

 

It had been observed previously, I found several observations, compute its drifting rate (confirmed by the pros) and prepare for you an ephemeris of its central meridian transit (under bracket its longitude) - observe between +/-2h from the time given:

 

WinJUPOS 10.1.15 (Saturn), C.M. transit times, 2015/06/24  23:42
Object longitude: L3 = 107,7° - 37,0743°/d * (T - 2015 May 20,5)
Time interval: 2015 Jun 20,0 ... 2015 Jul 31,0
Output format: Date UT (C.M. of System 3)
------------------------------------------------------------------------------
2015 Jun 20   03:55 (  51°)   14:07 (  35°)
2015 Jun 21   00:18 (  19°)   10:29 (   3°)   20:41 ( 348°)
2015 Jun 22   06:52 ( 332°)   17:04 ( 317°)
2015 Jun 23   03:15 ( 301°)   13:26 ( 285°)   23:38 ( 269°)
2015 Jun 24   09:49 ( 253°)   20:01 ( 238°)
2015 Jun 25   06:12 ( 222°)   16:23 ( 206°)
2015 Jun 26   02:35 ( 191°)   12:46 ( 175°)   22:58 ( 159°)
2015 Jun 27   09:09 ( 143°)
2015 Jun 28   05:32 ( 112°)   15:43 (  96°)
2015 Jun 29   01:55 (  80°)   12:06 (  64°)   22:18 (  49°)
2015 Jun 30   08:29 (  33°)   18:40 (  17°)
2015 Jul 01   04:52 (   2°)   15:03 ( 346°)
2015 Jul 02   01:15 ( 330°)   11:26 ( 314°)   21:37 ( 298°)
2015 Jul 03   07:49 ( 283°)   18:00 ( 267°)
2015 Jul 04   04:12 ( 252°)   14:23 ( 236°)
2015 Jul 05   00:35 ( 220°)   10:46 ( 204°)   20:57 ( 188°)
2015 Jul 06   07:09 ( 173°)   17:20 ( 157°)
2015 Jul 07   03:32 ( 141°)   13:43 ( 125°)
2015 Jul 08   10:06 (  94°)   20:17 (  78°)
2015 Jul 09   06:29 (  63°)   16:40 (  47°)
2015 Jul 10   02:52 (  31°)   13:03 (  15°)
2015 Jul 11   09:26 ( 344°)   19:37 ( 328°)
2015 Jul 12   05:49 ( 312°)   16:00 ( 296°)
2015 Jul 13   02:12 ( 281°)   12:23 ( 265°)   22:35 ( 250°)
2015 Jul 14   08:46 ( 234°)   18:57 ( 218°)
2015 Jul 15   05:09 ( 202°)   15:20 ( 186°)
2015 Jul 16   01:32 ( 171°)   11:43 ( 155°)   21:55 ( 139°)
2015 Jul 17   08:06 ( 123°)
2015 Jul 18   04:29 (  92°)   14:40 (  76°)
2015 Jul 19   00:52 (  61°)   11:03 (  45°)   21:15 (  29°)
2015 Jul 20   07:26 (  13°)   17:38 ( 358°)
2015 Jul 21   03:49 ( 342°)
2015 Jul 22   00:12 ( 310°)   10:23 ( 294°)   20:35 ( 279°)
2015 Jul 23   06:46 ( 263°)   16:58 ( 247°)
2015 Jul 24   03:09 ( 231°)   13:21 ( 216°)   23:32 ( 200°)
2015 Jul 25   09:44 ( 185°)   19:55 ( 169°)
2015 Jul 26   16:18 ( 137°)
2015 Jul 27   02:29 ( 121°)   12:41 ( 106°)   22:52 (  90°)
2015 Jul 28   09:04 (  74°)   19:15 (  58°)
2015 Jul 29   05:27 (  43°)   15:38 (  27°)
2015 Jul 30   01:50 (  11°)   12:01 ( 355°)   22:13 ( 340°)
------------------------------------------------------------------------------

 

Send me your images (delcroix point marc at free point fr) so I could measure them and follow its evolution !

 

Steady skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 http://astrosurf.com/delcroix

 

 

 

¤····Subject: solar images 19-22nd-June-2015

Received: 24 June 2015 at 02:06 JST

 

HI Guys Here are some images from the 19th and 22nd-June. Once again on the paired Ha 14:18ut /white light 14:43ut image, you can see the influence of the umbra-contacting Ha filaments, on the white light image as “hooks” into the umbra.

The 14:15ut Prom image is a natural looking ones shot image from the DS 90, as opposed to a composite of normal, or inverted images that I often use in an effort to capture the high dynamic range.

 

AR 2367 looked a bit feeble on the 19th, but actually looked healthier as it approached the limb on the 22nd.

 

I got carried away processing the 14:19 Ha image of AR 2367, It now reminds me of a mass of bladderwort seaweed, or something from Quatermass 2 !

 


 


 

Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: SOLAR IMAGES 15-18TH-JUNE-2015

Received: 24 June 2015 at 00:58 JST

 

Hi Guys These images taken over the 15th 18th June start off with AR2367 being the star of the show. Picking it up again on the 18th, it was a lesser beast, and AR2371 was looking much more impressive, particularly the flaring in Ha.

Compare the Ha image from 10:43ut with the white light image from 11:40ut, note how the filaments sweeping into ( or out of ) the umbra matches the shape of the white light “intrusion/ light bridge” in the umbra.

 

Seeing was mostly very poor but as always over the course of the days some reasonable seeing was out there. Having the scope running all day, I am finding that cloud gaps are producing better seeing than a total blue sky, I daresay because of the reduced radiation reaching the foreground. PM imaging also has some good moments , these were more recognisable by Autostakkert than my eye on the screen, so keep snapping was the order of the day. A 100Gb of capture files for a few final images is typical.

 

One thing about having a lot of avis on my capture laptop drive, in spite of plenty of free space Firecapture starts to falter on capture, with filing lagging behind the “stop start” capture rate. Clearing the drive of excess avis cures this.

 


 


 


 

Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Re: Received your note

Received: 22 June 2015 at 18:34 JST

 

Dear Reiichi,

Thanks once again for the translation! I think I may have overlooked a bit Anthony's image :-/ however the angle of view is less favourable.

I think that the trailing clouds above the orographic only happen later in the season - as they are due to trade winds coming from the southern return of the summer Hadley cell.... that will be onset around mid-spring. However we do not observed an eastern trailing cloud in the case of Elysium as Masatsugu recalled in one last note...

Best wishes,

Christophe

 

========================================

Message du : 19/06/2015 16:26

Suject : Received your note

 

Dear Christophe,

 

I have started translating your 2014 Note #8 for the CMO Japanese version.

Now I am translating your note and Bill's essay simultaneously!

 

Yes, contemporary imagers' performances are great, they are fighting at the limit of optical resolution. Terby crater is just a near limit object. Not only the imager, I feel, but also the analyst needs some image processing in his/her eye/brain system in judging those delicate findings. I agree with you that Christopher Go's 05 April 2014 image clearly shows the Terby crater, as equivalently as Anthony Wesly's 04 April image(refer to my 06 April 2014 CMO LtE).

 

It's now the Martian season when the trailing orography of Elysium Mons should emerge, but unfortunately Mars is just in conjunction which means the probe data like MRO MARCI Weather Report, only means for us, will not be transmitted back to Earth for several weeks because of telecommunication failures. The Elysium Mons Orographic trailing should be eastward as some sophisticated meteorological simulation models predicted.

 

Best Regards,

 

Reiichi KONNAI

========================================

Christophe PELLIER (Nantes, FRANCE)

 

 

 

¤····Subject: Saturn IR 20 June

Received: 21 June 2015 at 18:31 JST

 

Hi, all

 

A further IR capture of Saturn from yesterday evening, when conditions, for once, were pretty reasonable. High latitude disturbance evident. I took a wider field view than normal for this capture and there are two moons detectable in the wide field view that I could pick up(I havent checked for others yet and I didn’t align on them though), but what a beautiful sight with the planet hanging in the the vast blackness of space…….

 


 

Best regards, Clyde

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Jupiter 19 June

Received: 20 June 2015 at 15:44 JST

 

Hi, all

 

Kindly find attached a late apparition RGB/IR image set from yesterday evening. jupiter is not particularly well placed for me at the moment, but was nicely positioned near the moon and I was taking a few lunar captures, so swung over to Jupiter.

 

The northern temperate region seems to be quite reddish/brown at the moment, particularly in the area near the dark red spot. Quite a dark extended area in the south polar region.

 

I have also recently purchased a Baader Planetarium set of filters and have been testing them out. The IR 685 filter is giving some nice results(maybe this is understating things- I am delighted with it!), including picking up the current high latitude disturbance on Saturn. The red filter is also giving good results, although I am struggling a bit with getting good green and blue captures(I am using the dark blue filter, not the light blue).

 


 

Best regards, Clyde

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: solar images 8-9-11-June-2015

Received: 18 June 2015 at 18:15 JST

 

Hi Guys a lot of images but the files are small. There were few nice double sunspot groups. There was also a couple of small flare captured. I have processed these images a little dark so as not to exaggerate the brightness of actual flare so showing their true shape.

 

 


 

 


 

 


 

 


 

 

*

 

 


 

Best wishes

 

 Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Re: How are you going? from Masatsugu Minami

Received: 16 June 2015 at 05:32 JST

 

Dear Masatsugu,

I will try to send you my note tomorrow. Research work took a bit more time than expected - at final it will be a note about the winter Hellas in 2014...

Best wishes,

Christophe

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

Le 02/06/2015 20:53, Masatsugu MINAMI a écrit:

Dear Christophe,

 

Thank you so much for your prompt reply. Yes, it will be appropriate at this time if you kindly show us how the possible lee cloud of Elysium Mons trails southward. In the 1970’s, Smith and Smith gave some statistics of the Elysium cloud activity, where the seasonal cycle of the Elysium cloud was not so different from the curve applied for Olympus Mons. At that time they estimated no more than the densities of the cloud images in B (during the period 1924~1969). However at present we should say we might be able to derive much more nicer results. We are satisfactory if you will give in #435 your further comprehensive analysis.

 

 Thank for your kindness. I am still at home at the same place after I retired in 2002. My mail address is therefore identical with the one shown at the last line of the recent CMO/ISMO (at the last page).

 

With best wishes,

 

 Masatsugu

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

Christophe PELLIER (Nantes, FRANCE)

 

 

 

 ¤····Subject: For ISMO

Received: 14 June 2015 at 06:10 AM

 

Dear Masatsugu,
   We are getting very excited now about the New Horizons flyby, so I thought I would send a brief Q and A I did for Markus Hoitakanen (do you remember him?  He was at the Paris and Meudon events of 2009).

  Hope all is well with you.
  All the very best,
   yours,
  

Bill SHEEHAN (Willmar, MN)

 

Note):New Horizons is a NASA space probe launched on 19 January 2006 to study the ninth planet Pluto, its moons and one or two other Kuiper belt objects. It is designed to make the first fly by the planet on 14 July 2015. About an ounce of Clyde TOMBAUGH's ashes aboard the spacecraft.Ed

 

 

¤····Subject: solar images 6-7-8-June-2015

Received: 15 June 2015 at 01:27 JST

 

Hi Guys These solar images are mainly about the progress of AR 2362 . We have a wide field image showing where they were located on the solar disc on the 7th, and also cameo appearances of AR2360 and AR2361.

 

(There are more to come from the 8th but this mail would have been got too large).

 

White light images AP178T + 4x mag with stretched 3x TV Barlow, 2 Intes Herschel wedge , Baader solar continuum filter and IR blocker. ZWO ASI 120MM-S

 

Ha Coro 90 Ds plus AP 1.8x Barlow .

 


 


 


 Best wishes

 

 Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Solar Images and animation 3-4-June-2015

Received: 12 June 2015 at 21:09 JST

 

Hi Guys here are a few images from the beginning of the month, including a late in the day animation. I rarely point my scope west, but on the 4th, the sky was clearer pm than am. I noticed a small flare on a new sunspot this rapidly morphed into a duck at 14:41ut, and was actually changing shape during the 40 second exposures. The flaring prominence was very bright even against the surface. I continued to shoot avis over the next 20 minutes but fell asleep chin on hands whilst wait for the last 15:01ut avi to capture ! Bit too cosy in my dome.

 

You can see trouble brewing on the earlier 13:22ut Ha image.

 

I shot some white light images AM and noticed a brighter halo around the sunspot AR2356 I have been aware of these in the past and will have to watch out for them in the future and take more notice.

 


 


 

 


 


 


 

Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Saturn 2015.05.30/31 with satellites (good conditions)

Received: 5 June 2015 at 06:27 JST

 

Dears,
Two days after the nice May 28th night, seeing was a bit less good but still nice, I could again get some nice images despite 28° elevation:
 
In infrared, with Enceladus, Tethys, Dione and Rhea, its such a beauty at the eyepiece:

 


http://www.astrosurf.com/delcroix/images/s20150531i-sat.jpg




http://www.astrosurf.com/delcroix/images/planches/s20150531i-00h03.7UT-MDe.jpg

Red + infrared:

 


http://www.astrosurf.com/delcroix/images/planches/s20150530r-23h04.0UT-MDe.jpg

 


Average quality RGB and color layers :

 


http://www.astrosurf.com/delcroix/images/planches/s20150530-23h40.7UT-MDe.jpg
http://www.astrosurf.com/delcroix/images/planches/s20150530r-23h38.6UT-MDe.jpg
http://www.astrosurf.com/delcroix/images/planches/s20150530g-23h40.7UT-MDe.jpg
http://www.astrosurf.com/delcroix/images/planches/s20150530b-23h42.8UT-MDe.jpg

Steady skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 

 

 

¤····Subject: Saturn 2015.05.28 with polar perturbation and satellites

Received: 4 June 2015 at 03:12 JST

 

Dears,
 For my second Saturn observation session this year, I had good seeing despite a low elevation of the planet here (28° ... :( ). So I could image in infrared the polar area, with the hexagon and its central vortex, and the famous perturbation with its dark spot. Here are the images, first with a nice wide field image thanks to the ZWO ASI174MM camera:

 




http://www.astrosurf.com/delcroix/images/s20150528-ir_sat.jpg


 


Now the details:

 



http://www.astrosurf.com/delcroix/images/planches/s20150528i-23h43.8UT-MDe.jpg

 
Details are a bit less visible in R+IR, the perturbation is rising on the left side:

 



http://www.astrosurf.com/delcroix/images/planches/s20150528r-22h35.4UT-MDe.jpg


 
RVB and individual color layer, without any detection of the polar feature (probably due to the low elevation of the planet) :

 



http://www.astrosurf.com/delcroix/images/planches/s20150528-23h16.9UT-MDe.jpg

http://www.astrosurf.com/delcroix/images/planches/s20150528r-23h16.9UT-MDe.jpg

http://www.astrosurf.com/delcroix/images/planches/s20150528g-23h19.0UT-MDe.jpg

http://www.astrosurf.com/delcroix/images/planches/s20150528b-23h14.9UT-MDe.jpg

 


Steady skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 

 

 

¤····Subject: Occultation of Chi Leonis by Mars 18 Oct 2015

Received: 4 June 2015 at 01:01 JST

 

Dear Masami --
This is to notify all observers that Mars will occult a bright star, Chi Leonis, on
18 October, 2015.  Video or or rapid sequence imaging of this event may reveal the density of Mars' atmosphere at the areocentric latitudes of the recordings. Those who lack the capability of making brightness measurements will still find the event to be visually interesting.

The event will be visible favorably from
Japan, and at low altitude from the Philippines. It may be visible in daytime from Pacific
Islands and parts of the Western Hemisphere. See the attached path map.

As seen from Tokyo (latitude +35.6895 degrees, longitude +139.6917 degrees), Mars will be 22 degrees above the eastern horizon with an azimuth of 97 degrees, and the Sun will be 18 degrees below the horizon. The duration of the occultation will be 156 seconds, beginning at
19:22:57 UT at about 11 degrees north Martian latitude, and ending at 19:25:33 UT at about 19 degrees north Martian latitude.

As seen from
Cebu (latitude +10.3157 degrees, longitude +123.8854 degrees), Mars will be 8 degrees above the horizon at an azimuth of 84 degrees, and the Sun 31 degrees below the horizon. The duration will be 129 seconds, beginnning at 19:23:01 UT at about 35 degrees south Martian latitude, and ending at 19:25:10 UT at about 28 degrees south Martian latitude.

Mars will be at magnitude +1.75, with a solar elongation of 40 degrees in the morning sky, and an apparent diameter of 4.1 arc
seconds. Chi Leonis is an F0 star of magnitude 4.63, or a fifteenth as bright as Mars. It is also known at HIP 54182. Although a green or blue filter may enhance the contrast between Mars and the star, the use of such a filter may or may not enhance the quality of the data a particular observer obtains. Some occultations by Mars have been measured by measuring the change in the combined brightness of Mars plus the star, rather than trying to measure the star alone. The technique that is used should depend on the observer's judgement, in view of the instruments he has available.

The critical time of the observation, in which the atmosphere of Mars will partially block the starlight, will last only about 3 seconds at disappearance and reappearance. Reappearance will be in the illumination defect, so that the star might be seen slightly separated from the terminator and be more easily detected. However, the illumination defect will be only 0.16 arc seconds wide at its widest point.

Phobos and Deimos will also occult the star, but these events will not be visible at night from areas of Earth where there are known observers. Further detail about the events involving Mars, Phobos, and Deimos is available at
https://groups.yahoo.com/neo/groups/IOTAoccultations/files/Mars%20%26%20its%20moons%20occult%20Chi%20Leonis%2018-Oct-2015/

including more detailed path maps and detailed data on the locations of path limits. You must join the IOTA Yahoo message group to  access these files (joining is easy). Alternatively, you are invited to obtain the information directly from me by contacting me at rjvmd@hughes.net .

The computations for such data are difficult. Observers are asked to contact me about their observations, unless thay have previously coordinated with a interested astronomer.

With high regards,


Roger VENABLE (Mars Section, A.L.P.O.)

Vice President, IOTA

 

 

¤····Subject: Re: How are you going? from Masatsugu Minami

Received: 2 June 2015 at 14:37 JST

 

Dear Masatsugu,
Yesterday at lunch I was casually reading the last two CMO issues that I had not time to read before. I was thinking into writing something complementary to your note #07 about Elysium. The fact that the cloud is not trailing eastward to the contrary of the Tharsis afternoon clouds is very interesting. Maybe we can explain it by the difference of latitude, and the position of the Hadley cell... if it sounds fine to you ?
The passing of Don was regrettable :( he was of course one the persons that most inspired me when I was learning planetary astronomy (with you, needless to say, and a few other ones). We dedicated our book "Astronomie planétaire" to him.
Talking about this, I would like to send you a free issue of the book. Can you send me your postal address ?
Please keep me informed about how you are going in general, Masatsugu...
With my best wishes,


Christophe PELLIER (Nantes, FRANCE)

 

 

 

¤····Subject: Saturn 2015.05.27

Received: 3 June 2015 at 07:10 JST

 

Dears,

Start of Saturn season for me, gently under turbulent conditions, at 26° elevation only :

 


http://www.astrosurf.com/delcroix/images/planches/s20150527r-22h29.5UT-MDe.jpg



Better images from the days after should follow, once processed ...

Steady skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 

 

 

¤····Subject: Jupiter 2 June 2015.

Received: 3 June 2015 at 02:52 JST

 

Hi, all

 

Kindly find attached RGB/IR image set from this evening.

 


Best regards, Clyde

 

Clyde FOSTER (Centurion, SOUTH AFRICA)

 

 

 

¤····Subject: Jupiter 2015.05.28 with Io and Europa

Received: 2 June 2015 at 05:09 JST

 

Dears,

Under good conditions at 40°elevation, Jupiter in IR with Io and Europa.
BA oval is setting (bottom right) preceded by a portion of STB, the South Equatorial Band shows many fin details in two parallel bands, and there is a large festoon at meridian in the equatorial zone, biting th North Equatorial Band:

 


http://www.astrosurf.com/delcroix/images/planches/j20150528i-20h14.3UT-MDe.jpg

A short animation:
http://www.astrosurf.com/delcroix/images/planches/j20150528i-MDe.gif

Steady skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 

 

 

¤····Subject: Jupiter 2015.05.27

Received: 2 June 2015 at 03:19 JST

 

Dears,

Under so-so conditions, Jupiter in infrared with Ganymede in transit, the large white spot in NTrZ is at CM:

 


http://www.astrosurf.com/delcroix/images/planches/j20150527i-20h12.6UT-MDe.jpg


Steadier skies,

 

Marc DELCROIX (Tournefeuille, FRANCE)

 

 

 

¤····Subject: Solar Images 21-30th-May-2015

Received: 1 June 2015 at 17:22 JST

 

Hi guys here are the results of 4 “grab in loud gap” imaging sessions. Not much in the way of sunspots but there was a feast of filaments. The large filament shown in the 27th-10:28ut image became the large hedgerow prominence seen in the image from the 30th, as it crested the “off” limb .

 


 


 

 

 

*

Best wishes

 

Dave TYLER (Bucks, the UK)

 www.david-tyler.com
Ham call G4PIE

 

 

 

¤····Subject: Re: from bill sheehan: news

Received: 31 May 2015 at 04:44 AM

 

Dear Masatsugu,
   It is always a pleasure to hear from you—though I read with concern about the continuing heart troubles. Thank you for reminding me of your article about Flamsteed vs.
Newton, which I will now read again. 
   Lately I have become very interested in the careers of the hardworking observers in positional astronomy like Flamsteed, Bradley, and Airy (and let us not forget Bessel who was perhaps the most gifted of any of them). My recent visit to
Greenwich has enhanced this interest. Obviously it was their ability to obtain measures of planetary positions accurate to a few seconds of arc that betrayed the discrepancy between the theoretical and observed positions of Uranus that led to the discovery of Neptune.  So perhaps I may continue the X-tracts from the X-file now to show how that story turns out.  Perhaps, however, I should write a brief essay about the coincidence in dates between Mariner 4’s flyby of Mars of July 14, 1965 and the New Horizon’s flyby of Pluto of July 14, 2015, with some reflections on just what an era we have lived in.  This may put readers in the mood of the Great Event we are expecting soon.  Perhaps I should say a few words about Clyde Tombaugh’s role as a Mars observer—something he wanted to be remembered for.  I think his interest in Mars was greater than just about anything else.
    I will come up with something for you—never fear.
    I plan to be in
Flagstaff July 9-23—what better place to be to enjoy the flyby of the little world that was discovered there on Mars Hill?  I have decided that this would be far more pleasant than being crowded by the press people at Laurel, Maryland, where the scientists will gather.  I have made arrangements to be in touch by phone with Dale Cruikshank, who will be there, who can give some firsthand impressions of what we are learning from our spacecraft on the icy fringe of the Solar System.
   All the best, Bill 
 
 
----------------------------------
 On
May 30, 2015, at 2:25 PM, Masatsugu MINAMI  wrote:
 
 Dear Bill,
 
 Thank you very much for your timely news. It’s good to hear from you after a while. It was interesting to read about the nice trip to the northern
England of you and your wife. We received the email on the very morning of 25 May JST when we were editing CMO #434, and hence we put it readily in the LtE corner of #434.
 http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn4/CMO434.pdf
 
 I remember some names of towns are familiar to me. We have a CMO friend called Samuel Whitby in
Virginia
, whose ancestor must have come from Whitby. I once visited Chester where I enjoyed the row of sophisticatedly-decorated houses. I am keeping one colour copy of Mars drawing in 1988 which was made and sent by Richard Baum. I also remember the old Greenwich together with the tea clipper ship Cutty Sark. Inside the old Greenwich observatory, the statue of Flamsteed was very impressive to me. Have you ever happened to read my following old essay entitled “Great Comet in 1680 and Flamsteed vs Newton”?
 http://www.kwasan.kyoto-u.ac.jp/~cmo/cmomn2/Cahier07.htm
 in which I wrote “The statue of Flamsteed at the old Greenwich Observatory is filled with the atmosphere of anguish, but it is not only because of his illness but with the result of the battle with the ‘fearful, cautious and suspicious’ Newton.”
 
 Now I would like to ask you to write some opening essay for CMO #435 (June issue) as you suggested. The dead line is around 20 June.
 
 Just a notice: As we remember, before your opening essay “X-tracts from the ‘X’ files: W. H. Pickering and Percival Lowell: from collaborators to rivals (to be continued)” in CMO #430 (January 2015 issue), you wrote “A Travel Journal; ASADA, MINAMI and SHEEHAN in
Japan; Entries from SHEEHAN's Travel-log, April and May 2004” in CMO #427 (October 2014 issue) where you put also “to be continued” at its end line.
 
 Thank you again for your kind correspondence, and I look forward to your opening essay for #435 on any subject.
 With best wishes,
 
 Masatsugu
 
 PS: I am going to receive a re-examination (cardiac catheterisation) in hospital on 5 June because I feel angina attacks very often recently. I have already one stent in my coronary artery.

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

 

Bill SHEEHAN (Willmar, MN)

 

 

 


Back to the CMO/ISMO Façade / CMO Home Page