Astronomical ISO test (lots of comments!)

Started Jan 29, 2013 | Discussions thread
just Tony
Contributing MemberPosts: 823Gear list
Lumicon Minus Violet filter?
In reply to Trollmann, Feb 6, 2013

This could knock out quite a bit of that blue fringe.

The Zeiss 100mm at f/4 wouldn't mind looking through a 72mm diameter filter.

 just Tony's gear list:just Tony's gear list
Nikon D810 Nikon D810A
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