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Astrophotography and Sketching >> Sketching

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idp
sage


Reged: 08/21/09

Loc: New Haven, CT
Mars April 20 new
      #3759328 - 04/21/10 04:43 PM Attachment (41 downloads)

Well it was actually April 19 in Bethany (CT), but April 20, 01:41ut. Mars at 7.9" is getting more and more difficult, but a few albedo features (albeit a bit fuzzy) were still visible in the 10" Clark refractore. Seeing was average, I used a W23A filter and 500x for the albedo spots, no filter and 335x for the rest. Bright spots over Tharsis and Moab/Eden, and a faint bright cloud seemed to stretch across the planet. Raw sketch this time, no colors.

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idp
sage


Reged: 08/21/09

Loc: New Haven, CT
Re: Mars April 20 new [Re: idp]
      #3759332 - 04/21/10 04:45 PM Attachment (40 downloads)


I also have the habit to record intensity estimates, using the BAA scale (0=polar cap, 10=black background sky)

Ivano


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frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Mars April 20 new [Re: idp]
      #3760998 - 04/22/10 10:59 AM

Ivano,

Beautifully done. It is getting tough now to bring in Mars. You did a great job here.

Frank


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Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Mars April 20 new [Re: frank5817]
      #3761116 - 04/22/10 11:51 AM

Wow, that's a lot of detail. Nice sketch!

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dweller25
Pooh-Bah


Reged: 08/30/07

Loc: Lancashire, UK
Re: Mars April 20 new [Re: Jef De Wit]
      #3761276 - 04/22/10 01:02 PM

Great drawing, I would love to look through a big refractor.

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CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Mars April 20 new [Re: dweller25]
      #3762896 - 04/23/10 03:55 AM Attachment (35 downloads)

Ivano,

An excellent observation of Mars. You have captured a cloud band extending between Eden (preceding limb) to Tharsis (following limb) over Chryse-Xanthe. I have labeled the major albedo features visible. Thank you for sharing it with us all.

Carlos


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rerun
super member


Reged: 03/22/09

Loc: Germany Mülheim an der Ruhr
Re: Mars April 20 [Re: CarlosEH]
      #3763082 - 04/23/10 08:36 AM

Hallo Ivano,

great sketch of Mars.You saw very many details ,that must be a fine scope,you use.

CS

Markus


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