I hope to be the owner of a TMB80SS (price came down several hundred dollars on Astronomics) very soon and want to buy a 2" filter for use in moderate light pollution - nebula photography - this
article was very helpful, but what is the experience of others, should I go Broadband or Narrowband - Orion Ultrablock, Lumicon UHC or an O-III?
I understand that Thousand Oaks have a sharper filter gradient. Is that really a significant advantage - should I ask this question in the advanced astrophotography section.
Is there any real advantage to the Baader Fringe Killer - does it really make that much difference to inexpensive achromats, as they claim
here.
So many claims?