Jump to content


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

Mars 15 april 2010

This topic has been archived. This means that you cannot reply to this topic.
13 replies to this topic

#1 Jef De Wit

Jef De Wit

    Mercury-Atlas

  • *****
  • Posts: 2969
  • Joined: 06 Mar 2009

Posted 16 April 2010 - 12:32 PM

I tried this week three times to see anything on Mars with my 12" dobson. Without any result :mad: Is there something with my eyes or telescope? But Frank, Dweller, Uwe and Kris had some nice results on the "little" Mars. So I blamed the seeing.
Yesterday I finaly had a good view of the red planet. I was surpriced with the amount of detail and asked the question: "why I haven't see more when Mars was almost twice the diameter?".
The norht polarcap was very small and difficult to see compared with my last observation a month ago (a blue filter helped). The best view was with a yellow filter: Mare Eryhtraeum was most prominent. Mare Acidalium/Niliacus Lacus made a sharp distinction with the lighter Tempe. At the west (middle left) was another lighter region (Eden?).
The sketch was done with pastel pencils and a new toy that worked very well for blending: a rubber shaper . The black surrounding was done with a black permanent marker.

15/4/2010, 21.40 UT, 12" dobson + apodizing mask @ x300, yellow and blue filter, CM 35°, diam. 8.2", alt. 45°

Attached Files



#2 frank5817

frank5817

    Cosmos

  • *****
  • Posts: 8832
  • Joined: 13 Jun 2006

Posted 16 April 2010 - 12:58 PM

Jef,

This is a very fine sketch. :bow: :cool: You have captured much more than I did earlier this week. Color and albedo features are A+.:waytogo:
As Mars shrinks we really needs good seeing. The last two nights for me although clear were too disturbed to see any details on the 3 overlapping dancing images of Mars in my scope. :crazyeyes:That rubber shaper really seems to work well. I'll need to check it out further.

Frank :)

#3 dweller25

dweller25

    Surveyor 1

  • -----
  • Posts: 1556
  • Joined: 30 Aug 2007

Posted 16 April 2010 - 01:26 PM

Jef, great drawing.

Try again tonight (16th), the weather is coming from the North, seeing may be good.

I will be going out but have already had half a bottle of wine !!!!

PS - try to observe in twilight - it helps.

#4 Uwe Pilz

Uwe Pilz

    Apollo

  • *****
  • Posts: 1203
  • Joined: 16 May 2008

Posted 16 April 2010 - 03:11 PM

Dear Jef,

I hope there is notihin with your eyes. The planet ist shrinking rapidely. I had a hard time to see any detail at all.

#5 Kris.

Kris.

    Surveyor 1

  • *****
  • Posts: 1766
  • Joined: 16 Sep 2004

Posted 16 April 2010 - 05:21 PM

good sketch Jef, i saw the polar cap as very small too!

I was surpriced with the amount of detail and asked the question: "why I haven't see more when Mars was almost twice the diameter?".


that should spur you on to start observing mars earlier next summer/autumn 2011 :grin:

there's absolutely nothing wrong with your eyes, i've had 2 brief looks at mars the last weeks, with bad seeing, but i couldn't make out anything as well in my 12". i could see a little bit this evening though.

#6 CarlosEH

CarlosEH

    Cosmos

  • *****
  • Posts: 7508
  • Joined: 19 Jan 2005

Posted 16 April 2010 - 07:54 PM

Jef,

An excellent observation of Mars at a small angular diameter (8.2"). You were able to record a few albedo features as noted in my labels. Thank you for sharing it with us all.

Carlos

Attached Files



#7 Jef De Wit

Jef De Wit

    Mercury-Atlas

  • *****
  • Posts: 2969
  • Joined: 06 Mar 2009

Posted 17 April 2010 - 03:06 AM

Everybody, thanks for the kind words.

@ Dweller: I hope it was red wine :p

@ Frank: Thanks for the labeling and the nice black background. So I was right about Eden.

#8 dweller25

dweller25

    Surveyor 1

  • -----
  • Posts: 1556
  • Joined: 30 Aug 2007

Posted 17 April 2010 - 03:14 AM

Jef, it was a French Chardonnay :)

I looked at Mars on the evening of the 16th and seeing was terrible - maybe the volcanic ash ??? I did not bother to do a drawing of either Mars or Saturn. So you got a good result :waytogo:

#9 Kris.

Kris.

    Surveyor 1

  • *****
  • Posts: 1766
  • Joined: 16 Sep 2004

Posted 17 April 2010 - 04:58 AM

i didn't knew there's red Chardonnay :question:

#10 Jef De Wit

Jef De Wit

    Mercury-Atlas

  • *****
  • Posts: 2969
  • Joined: 06 Mar 2009

Posted 18 April 2010 - 10:51 AM

Sorry... I made a little mistake.

Thanks a lot Carlos (and not Frank) for the labeling!!!

#11 Tommy5

Tommy5

    Mercury-Atlas

  • -----
  • Posts: 2814
  • Joined: 28 Mar 2004

Posted 18 April 2010 - 09:24 PM

Great sketch of the tiny mars ,thanks for posting.

#12 Jef De Wit

Jef De Wit

    Mercury-Atlas

  • *****
  • Posts: 2969
  • Joined: 06 Mar 2009

Posted 19 April 2010 - 12:28 PM

Thanks Tommy.

#13 ladip63

ladip63

    Viking 1

  • -----
  • Posts: 813
  • Joined: 17 Oct 2007

Posted 21 April 2010 - 11:33 AM

Nice one Jef. :bow: Great job :goodjob: I gave up on Mars. :( :cry: I missed it again this year, maybe next. :D

#14 Jef De Wit

Jef De Wit

    Mercury-Atlas

  • *****
  • Posts: 2969
  • Joined: 06 Mar 2009

Posted 21 April 2010 - 12:25 PM

Lynn, Thanks.
I first gave up Mars as well. But give it a try (when Syrtis Major is on the view). It will train you for the next opposition.


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.



Recent Reviews


Imaging/Sketching Contest






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics