Thread: back focus again!!
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Old 14-04-2015, 02:17 PM
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Amaranthus (Barry)
Thylacinus stargazoculus

Amaranthus is offline 		 
Join Date: Jan 2014
Location: Judbury, Tasmania
Posts: 1,203
A narrower filter holder? I use the TS filter slider, which has an optical length of only 15mm. (That would give you 6.5mm spare.) It's terrific, but there are compromises. It can't be automated.
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