Optolong L-Para 2" Dual-band Filter Dovetail Renishaw RA Encoder Upgrade
USD139.50
USD159.50
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
Live Spec
Optolong L-Para 2" Dual-band Filter Dovetail Renishaw RA Encoder UpgradeL Para is a brand new dual narrowband 10nm light pollution filter. The FWHM of L Para is 10nm for OIII (500. 7nm) and H Alpha (656. 3nm) respectively. The transmittance of nebulae emission lines are both greater than 85% in system with focal ratios of F2 and above. It effectively filters out mercury lamp, sodium lamp, and LED light pollution emission lines. At the same time, it has excellent contrast and anti halo characteristics, allowing you to
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