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Old 27-02-2020, 08:51 PM
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Merlin66 (Ken)
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Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
Tareq,
Not all AP guys are just using just narrowband filters - you have to consider the use of L filters and RGB filters if you're really "serious"
This puts extra demands on the already very good ED type achromats.
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