From: "aa27100" <antonio.agnesi@unipv.it>

Date: February 25, 2008 1:43:17 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: More New Images!

Hi Jim,

nice shot: perfect collimation really seems to be the most important issue with reflecting 

scopes!

Indeed, it was hard for me to believe that you guys imaging at 200 mm (or more) aperture 

have only a slight edge on my 102-mm apo refractor. Compare your (and Milton's) 

recently posted Saturn and Mars images with my last efforts (seeing 4/5, other details 

with pictures):

Mars:

http://tech.ph.groups.yahoo.com/group/Astro_IIDC/photos/view/cf01?b=1&o=2

Saturn:

http://tech.ph.groups.yahoo.com/group/Astro_IIDC/photos/view/cf01?b=2&o=2

After many years spent on deep-sky astrophotography, I am starting to enjoy also solar 

system imaging and I am considering a dedicated equipment: something in the range 

180-210 mm (compatible with a GM8 mount and reasonably portable). Mewlons are on 

top of the list, but just for starting I might want to play with some friend's C8, to make 

practice with alignment issues. I know larger apertures are better, but the occurrence of 

excellent seeing here does not justify the investment. What is your opinion?

Thanks,

Antonio

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