Thread: Do I need IR blocker with LPS filter - QHY8??
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Old 01-11-2010, 05:59 AM
Alchemy (Clive)
Quietly watching

Alchemy is offline 		 
Join Date: Jul 2007
Location: Yarra Junction
Posts: 3,044
400nm is deep blue, at 520nm the human eye senses green and at 600nm red. At 656nm is the famous "H-Alpha" emission line of hydrogen, once you get over 700 you are heading to IR..... Conclusion .....this alone will be fine.
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