AstroBin is the home of astrophotography - Share full resolution images, preserve acquisition details, discover equipment, discuss techniques, and learn from the community.Discover AstroBin

IDAS 6.8nm HS Ha F2-F3.5

firstlightoptics.com/.../idas-68nm-hs-ha-filter-f2-to-f3-5-2-5mm-thick.html
Frozen as ambiguous
TypeHydrogen-alpha (Hα)
SizeOther
Bandwidth6.8 nm
Users 0
Images 0
Most often used with

There doesn't seem to be anything here.

Also available in the following variants:
50 mm
52 mm