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Achieving focus on a FS102

Started by mvollmer, 03/09/2003 01:14PM
Posted 03/09/2003 01:14PM Opening Post
I have a question for the forum. I recently bought an FS102 as my primary photography scope. I am used to focus aids such as a Hartman mask for my SCT, and was wondering if such a thing exists for a refractor. I had a STI focuser for my SCT for a while, but didn't like it. Any ideas on achieving sharp pinpoint focus on the refractor? My eyesight is failing as a function of age, and I'm finding I have a hard time distinguishing between "almost in" and "in focus!". That was the beauty of the mask. I would also add, I am using a Nikon 35mm with a Beattie Intenscreen. Any thoughts are welcome and appreciated.

Mike
Posted 03/09/2003 03:37PM #1
1. You can bracket your shots
2. Your best bet would probably be to buy one of those STI focusers
3. If you have a Nikon with a removable prism you can look for a Magnifying Finder.