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Old 12-06-2016, 09:30 AM
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MortonH
Deprived of starlight

MortonH is offline
 
Join Date: Nov 2006
Location: Sydney
Posts: 3,913
In a small scope like a 4" you need a filter with high transmission. I would only consider these two:

http://www.bintel.com.au/Accessories...oductview.aspx

http://www.bintel.com.au/Accessories...oductview.aspx
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