16 May
2007
16 May
'07
5:05 a.m.
The SC is generous with back focus. This is because the focal length and focal ratio are variable. Just undo the mirror lock (if it has one) and turn the main focus nob to get in the ballpark and fine focus with the autofocus after locking the mirror again. The DSI is not a Planet camera so I assume you are going after deep sky objects. If so you may want to add a focal reducer to increase your field of view and shorten exposure time. DT ____________________________________________________________________________________ The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. http://searchmarketing.yahoo.com/arp/sponsoredsearch_v2.php