Mars 07/12 two sketches
Posted 07 December 2009 - 08:13 AM
I made 2 observations, one at 04:00 UT accompanied by a beautiful moon-halo due to the high clouds, and another around 06:00 UT with beginning twilight.
first obvious thing is the large polar cap with a broad dark rim, and Boreo Syrtis just rotating into view. in the north dessert plains i could see 3 dark smudges/streaks, from small and darker to thin and fainter, going from left to right. perhaps Philegra & Aetheria? i'm not sure about the other one.
over to the south are Mare Cimmerium & Mare Tyrrhenum.
i am a bit surprised i couldn't see any limb haze, perhaps there's little dust activity in the region now? (good sign anyway)
Posted 07 December 2009 - 08:18 AM
the sketches were done using my apodizing mask.
Posted 07 December 2009 - 09:38 AM
Posted 07 December 2009 - 09:46 AM
These two sketches are beautiful and the colors are spot on.
It is good to see you got a weather break.
Posted 07 December 2009 - 03:16 PM
It was worth waiting for! I'm going to try to catch Mars during the Christmas-holiday. Getting up so early before going to work is a painfull thing...
Posted 07 December 2009 - 11:51 PM
Wonderful captures! I'm with Jef, I'll have to get up one morning during the two weeks of Christmas break to capture Mars.
Posted 08 December 2009 - 04:04 AM
I got up this morning to try drawing Mars - but too many clouds !!
Instead I will enjoy your early morning :-)
Posted 08 December 2009 - 06:20 AM
Posted 08 December 2009 - 09:22 AM
Jay & Jef: i was lucky to have a day off Monday but now you can easily get up one hour earlier to observe mars high in the sky for about half an hour, bring all your stuff back inside and then prepare to go to work.
Posted 13 December 2009 - 08:04 AM
Both sketches are very impressive. Keep up the good work.
Posted 13 December 2009 - 10:52 PM
An outstanding set of Mars observations. You have recorded a good amount of detail over the surface of Mars. I have labeled the major albedo features visible. I look forward to your future observations. Thank you for sharing them with us all.
Posted 15 December 2009 - 05:17 AM
May I ask on what maps you base your labeling? There are some regions I haven't heard of yet.
Posted 15 December 2009 - 02:41 PM
Since the first map of Mars produced by the German astronomers Wilhelm Beer and Johann Heinrich Madler in 1840 (using a 3.75-inch Fraunhofer refractor in Berlin) the dark and light albedo markings over the surface of Mars have received many names. The names initially reflected famous astronomers who studied the red planet in the past, but later included mythology and geography. Giovanni Virginio Schiaparelli added greatly to the nomenclature of Mars after the perihelic opposition of 1877 using an 8.6-inch Merz refractor from Milan, Italy. The International Astronomical Union (IAU) produced an offical nomenclature map in 1958 based, in part, on the nomenclature of Schiaparelli and other classical astronomers.
I primarily refer to the map of Mars produced by the Japanese astronomer Shiro Ebisawa (who based his map upon the one produced by the Greco-French astronomer Eugene M. Antoniadi) as well as a Mars map produced by Daniel Troiani and myself for ALPO. Other excellent Mars maps are vailable but some can get very complicated.
http://marsprogram.j...ch/marsnom.html (ALPO Mars map)
http://alpo-j.asahik...test/map123.JPG (ALPO Japan Mars map)
http://www.britastro.org/mars/maps.htm (BAA Mars web site containing maps)
I hope that these help. Happy Holidays and a Happy New Year!