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Mars 15 april 2010

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#1 Jef De Wit

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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°

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#2 frank5817

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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

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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

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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.

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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

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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

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#7 Jef De Wit

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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

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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.

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Posted 17 April 2010 - 04:58 AM

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

#10 Jef De Wit

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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

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Posted 18 April 2010 - 09:24 PM

Great sketch of the tiny mars ,thanks for posting.

#12 Jef De Wit

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Posted 19 April 2010 - 12:28 PM

Thanks Tommy.

#13 ladip63

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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

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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.






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