From: Mark Gaffney <markgaffney@me.com>

Date: January 21, 2010 4:44:08 PM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Mars again!

Thanks Jim, 

I understand if "Set sharpest Frame" is selected & "Include" then that`s the one used for pixel comparisons. (Marvellous what some printed sheets from the manual can do to aid ease of accessing information..) I won`t try that movie again without more advice..!

Mark.

On 22/01/2010, at 10:22 AM, Jim Chung wrote:

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
>>
>>
>>
>
>