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Old 13-07-2018, 03:23 PM
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alpal is offline
Join Date: Jan 2012
Location: Melbourne
Posts: 2,852
Originally Posted by Atmos View Post
CLS filters can be good for emission Nebula as most of the colour comes from the Ha and OIII emissions.

It would still be great to get data at a really dark site & not have to use it though.
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