Free Express Shipping! Alpine Astronomical Baader 685nm IR-Pass Filter (2") Ideal for Planetary Viewing and Imaging, View in the Long Deep-Red Wavelength, IR Phantom-Group Optical Multi-Coatings, Passes the Narrow 685nm Bandwidth, Fits Standard 2"...
Free Express Shipping! Alpine Astronomical Baader 685nm IR-Pass Filter (2") Ideal for Planetary Viewing and Imaging, View in the Long Deep-Red Wavelength, IR Phantom-Group Optical Multi-Coatings, Passes the Narrow 685nm Bandwidth, Fits Standard 2"...