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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
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?


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