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Old 18-10-2009, 08:18 PM
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Quark (Trevor)
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Join Date: Apr 2008
Location: Broken Hill NSW Australia
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Quote:
Originally Posted by matt View Post
Nice image, Trevor.

Although I think you'll find you've understated the apparent diameter of Mars.

Astrocalc is showing it as 7.27" early this morning.

Cheers
Thanks Matt, we are both correct regarding the size of the disk of Mars. You have listed the diameter and I have listed the radius. The ephemeris generator that I use lists the radius of Mars in arc sec's for any UTC input.

Quote:
Originally Posted by Lester View Post
Hi Trevor, good on ya for getting an early Mars image showing detail as well. Are you sure on its diameter at 3.6", as my Sky 6 program lists its diameter at 7"?
Thanks Lester, yes it was an early morning and I had only just hit the sack from processing my Jupiter data from earlier in the evening.

The radius of Mars for this image was 3.624 arc sec's which would make the diameter just over 7.2 arc sec's. In my post I listed the radius.
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