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Old 09-10-2008, 12:33 PM
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Matty P (Matt)
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Matty P is offline
 
Join Date: Nov 2007
Location: Canberra
Posts: 2,797
Quote:
Originally Posted by AlexN View Post
Matt, I hear you on that.. I tried imaging @ F/10 through my 11" and the results were shockingly bad (unguided + 2800mm focal length) now that I've NEARLY got guiding working properly I'll be giving it another go to split the trap... I dont see any real reason to image at F10 other than splitting the trap...

For me, even F/6.3 isnt easy @ 1764mm
Your guiding will have to be pretty much spot on imaging at that FL.

Quote:
Originally Posted by RB View Post
Matty, make yourself a dial to fit over the focuser on the C8 which allows you finer adjustments.
You can make it out of a piece of perspex or similar, even wood.
Cut out a circle so you can wrap all your fingers around it, say around 5-7cm dia' then cut a smaller hole in the centre to fit snuggly over the focus knob so as not to slip.
That is a very good idea but instead I am wanting to purchase a crayford focuser. We'll see what happens.

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