Celestron - Comet Filter Set of (3) for (1.25") Oculars - Cased (Vintage) | eBay
Lumicon Swan Band Comet Filter, 2" - Astromanie
IDAS EAO1 Filter for EAA and Comets – Hutech E-store
Lumicon 1.25" Comet Filter - LF3070
Comet Filters / Baader Planetarium Blog Posts
Spas & Pools - 11263-C-09: JCZ COMET FILTER
Lumicon Comet Filter - 1.25" # LF3070
SVOTek--Lumicon 1.25" Comet Filter
CN Filter Tests
Comet Lovejoy with Baader filter | Wesley's Tool-Box
Comet C/2015 V2 (Johnson) - Lumicon comet filter - Solar System Observing - Cloudy Nights
Dave Jewitt: Comet 17P/Holmes
Comet 41P/T-G-K Greens Up For St. Paddy's Day - Sky & Telescope - Sky & Telescope
CN Filter Tests
Optolong Astronomy Filter - Image of this week ! Thanks to Fritz Helmut Hemmerich to use Optolong L-Pro filter to shot this amazing Comet 21p, we expect it will win some awards.
SVOTek--Lumicon 2.0" Comet Filter
Comet Filter Clone (The Coffee Filter) : r/diypedals