Baader IR Pass Filter 685nm Size::2" This fine optical tool will

This fine optical tool will help a small refractor to really put the advertized magnification within reach

25" one full F-Stop faster than f/10

Warranty: 2-year Telescope Warranty

to receive an ultra narrow (70nm) wide H-alpha passband filter of unheared of 95% peak transmission at world‘s lowest price

ISO Compliant - proprietary Solar Safe material

Baader IR Pass Filter 685nm Size::2" This fine optical tool willBaader IR Pass Filter 685nm The secret of good planetary images, the Baader IR Pass Filter 685nm can greatly improve image sharpness by reducing the effects of seeing. Baader IR Pass filter blocks wavelengths below 670 nm. At these longer wavelengths, planetary images are less disturbed by atmospheric conditions. By combining a luminance image taken with the IR Pass filter, along with RGB frames, overall image sharpness is significantly enhanced.