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Old 14-10-2020, 02:42 PM
Robert_T's Avatar
aiming for 2nd Halley's

Robert_T is offline
Join Date: Oct 2005
Location: Australia
Posts: 2,918
i also went with a filter drawer but a square version with two drawers.

i belive the ZWO one is 21mm and can replace their 21mm extension.

the one I got is 16.0-16.5mm and can replace that width extension.
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