From: Jim Chung <jim_chung@sunshine.net>

Date: January 21, 2010 4:22:37 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Mars again!

Thanks Milton & Alan for the insights.

Mark,

Multiple alignment points are only useful for large bodies like the moon although it might be interesting to try it in the summer on a large focal length image of Jupiter.  As a result I don't use it for processing Mars.  I've only tried it once on Crater Copernicus.  I'd suggest that if you have to wait for 6 hours for your iBook to process something with AstroIIDC then you should change the parameters.

Jim

Quoting Mark Gaffney <markgaffney@me.com>:

That`s great Jim,

I take it that`s a very large dormant volcano!

You take a lot of info I notice when shooting. I had a 3.18 GB moon  movie (some 3300 frames) taken with my Scorpion 20SO in which I`d  mistakenly left the camera running whilst slewing around. I selected  one frame  (the nicest sharpest one) then made 7 manual selection  areas around the finest crater (all well over 10.0 in pixel variance)  & sat & waited 6 hours for it to process on my iBook. I got nothing  for my trouble though, I assume because the blue outlined frame which  is the standard for comparison was different to my dark green selected  frame? I had about 5 different regions of the moon amongst the  different frames..? In a normal movie with fixed viewpoint  I was  guessing, the more frames selected the longer it`d take to process?  Are you excluding all those frames or including them by the way? Sorry  I was a trifle long winded here..!

Mark.

On 22/01/2010, at 7:58 AM, jimchung2338 wrote:

Wow, look at all the activity on this forum!

And now my turn to add to all the traffic. Mars from Toronto this  morning (Jan21) with my 12" SW dob under average seeing conditions -  I takes what I gets.

What's interesting is the bright area that I can see in both images  which seems to correspond to the Eysium Mons peak (14,000 m  elevation). I don't think its a cloud formation since it doesn't  appear in the blue channel, only clearly in the green channel.

Ideas?

http://tech.groups.yahoo.com/group/Astro_IIDC/files/Planetary/MarsJan21b.jpg

Jim