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Old 19-09-2017, 10:07 AM
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Merlin66 (Ken)
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Merlin66 is offline
 
Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
The red filters are also handy for Ha imaging - suppresses the wavelengths below 600nm...
The CPL significantly reduces reflections within your optics...
Make an offer??
Ken