HERE ARE MIDWEST OPTICAL MIDOPT BN630-22.5 BN630-25.4 C-MOUNT BN630-25.5 BN630-27 BN630-30.5 BN630-40.5, BN630-46, BN630-49, BN630-52, BN630-62 NARROW LIGHT RED BANDPASS FILTERS. NEVER BEEN USED BUT STILL LISTED THEM AS USED. I HAVE THESE SIZES AVAILABLE, 25.4mm C-MOUNT, 25.5mm, 27mm, 30.5mm, 49mm & 52mm. LET ME KNOW IF THERE IS A SIZE YOU NEED THAT'S NOT LISTED AND I'LL CHECK TO SEE IF I HAVE IT.
TYPE: NARROW LIGHT RED BANDPASS
FILTER SIZE: M22.5, M25.4, M25.5, M27, M30.5, M40.5, M49, M52 & 62mm
SPECTRAL RANGE: 625-645nm
FWHM: 45nm
TOLERANCE: +/- 10 nm
MIN. PEAK TRANSMISSION: >90%
SURFACE QUALITY: 40/20
https://midopt.com/filters/bn630/
PLEASE SEE MY OTHER AUCTIONS FOR MORE GREAT DEALS!