For sale is my set of 1.25? narrowband filters made by Optolong. These are the 7nm/6.5/6.5 and until taking them out to package up they?ve lived their entire lives in my Atik filter wheel. I would be happy to send pictures taken with these filters but didn?t want to upload low res versions to this ad. I am selling them to pay for new filters with a slightly narrower band pass, but they?ve been great to work with so far. Filters are packed in hard plastic filter cases from another brand, but I did a quick clean on all three before boxing them up. Price includes shipping in the CONUS and a $10 PayPal few, but if you want to use the friend and family option (or Venmo) then I would be happy to make the final price $400.
Feel free to ask questions!