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Old 04-06-2019, 09:08 PM
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barx1963 (Malcolm)
Bright the hawk's flight

barx1963 is offline
 
Join Date: Nov 2008
Location: Waurn Ponds Vic
Posts: 3,852
Narrowband Filter query

I have been thinking of upgrading my NB filters. Baader have introduced their range of Ultra Narrowband filters. Link to the Ha one is here https://www.baader-planetarium.com/e...nm-filter.html
Ha has 3.5nm bandwidth, while the OIII and SII are 4.5nm.
Just seeing if anyone has any experience with these, any thoughts?
Also I have been told that narrow Ha filters miss out on a nearby emission line, have not been able to find info on that online. Would anyone know if that would be the case with these?

Cheers

Malcolm
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