2010-03-10-DB-2
#1
Posted 10 March 2010 - 07:31 PM
16-in (41cm) f/6.9 Newtonian, Mag: 490x
Mars 10, 2010, 2320-2350 UT, CM 33.1 = 40.4, Ls = 62.4, De = 12.2
Seeing: 7-8. Trans: 6, Alt: 60 deg. OAT: 26.1 C
NOTES: BC = 0. Telescope performing great. Nothing unusual, Morning limb haze and clouds. NPR hazy with bright cloud at morning edge of cap. Evening clouds. Equatorial band cloud (EBC).
Wow, the astronomer's curse was lifted again!!! Scope maintenance done; new drive corrector working great, sky clear and steady. what more would an old guy want?
#2
Posted 10 March 2010 - 07:35 PM
#3
Posted 10 March 2010 - 08:00 PM
#4
Posted 11 March 2010 - 01:15 PM
Love that drawing. What filter is best to detect the EBC? I've never had a chance to see it.
Thanks,
#5
Posted 11 March 2010 - 01:42 PM
For filter work go see: http://www.alpo-astr...ing_Mars_7.html
#6
Posted 11 March 2010 - 02:21 PM
#7
Posted 11 March 2010 - 05:04 PM
Superb sketch Lots of detail.
Lynn
#8
Posted 11 March 2010 - 05:33 PM
#9
Posted 12 March 2010 - 12:22 PM
I think I used my artist stub or smudging thingy too hard so my drawing is a little weird. I use a W64 and switch off with a W47 for those cloud bands. A W47 is dense and I have to lower the mag done to 280 or so to use it, even with the 16", my eyes are not what they were. Can't remember if we call them Equatorial band cloud (EBC) or Equatorial cloud bands (ECB)
For filter work go see: http://www.alpo-astr...ing_Mars_7.html
Thanks, Jeff.
#10
Posted 12 March 2010 - 04:37 PM
#11
Posted 12 March 2010 - 05:47 PM
Great sketch Jeff. Welcome back and be well.
Thanks Sol. as I say, the old eye-hand-coordination is gone! Here is a redraw on a 2" circle, I will use this format now on, but I still can't get those details on paper like the old days. Oh well, getting older is painful.
#12
Posted 13 March 2010 - 12:34 AM
Another excellent observation of Mars. You have recorded an impressive amount of detail over Mars using your outstanding 16" F/6.9 Newtonian. I also like the 2 inch drawing as it really brings out the detail better. You may have recorded Ierne (~133 degrees West) prior to separating from the North Polar Cap (NPC). I look forward to your future observations.
I took your excellent figure of the Martian North Polar Cap (NPC) from your observer's guide and added labels to the NPC remnants (Ierne, Lemuria, and Cecropia).
Carlos
#13
Posted 13 March 2010 - 11:08 AM
#14
Posted 13 March 2010 - 12:14 PM
If your Mars observation above is a "bad drawing" I can only imagine a good one from you. I think it is excellent! Try to observe whenever your knees will allow you. The best of luck.
Carlos
#15
Posted 13 March 2010 - 05:42 PM
#16
Posted 14 March 2010 - 06:54 AM
#17
Posted 14 March 2010 - 09:29 AM
I wish I was half as good.
I hope your health improves.
#18
Posted 14 March 2010 - 09:36 AM
it's great to have some planetary veterans on the forum here Jeff, do you have a site where we can see your drawings?
No. All my finished drawings are somewhere in the ALPO archives. I have thousands of Mars drawings on 5x7" cards. Too many!
#19
Posted 14 March 2010 - 10:30 AM
Very nice detailed sketch. If you have any of your past sketches you should post some of them here.
Frank
#20
Posted 14 March 2010 - 10:32 AM
Jeff,
Very nice detailed sketch. If you have any of your past sketches you should post some of them here.
Frank
Would but too many of them. Started drawing Mars in 1973 and did an average of 300 per apparition. Some are not so good
#21
Posted 14 March 2010 - 02:00 PM
i've looked up your sketches from 2001 at the alpo site. is there anywhere we can see your pre-2000 skectches as well? i'd love to see them!
#22
Posted 14 March 2010 - 02:29 PM