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What I do is focus with clear and then use an offset for the different filters so I don't refocus, just move the focuser a tad.

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Jeff
This hobby has a large learning curve. I have yet to post any images as I am still at the bottom of the curve. Dont let your self get frustrated. It all works out with time and trial and error.

not to jack Jeff's post but

Dean
How are you calculating your offset for focus.

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Rick

TAK TOA-150
12.5" RCOS truss, waiting for construction
C9.25 f/10
WO Zenithstar 110
WO Zenithstar 80
SBIG ST-2000XM CFW-9 w/ Astrodons
FLI PDF focuser
OPTEC TCF-S
AO-8
Canon XTI
Takahashi EM-200
Paramount ME

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