OPTOLONG

For more than twenty years Optolong has designed and manufactured high quality scientific filters using Schott optical glass to suit a range of applications including both visual astronomy and astrophotography with DSLRs and CMOS/CCD cameras. We stock a large selection of Optolong filters including -

L-eNhance and L-eXtreme dual-bandpass to isolate emission nebulae, available in 1.25" and 2"
L-Pro and UHC multi-bandpass to cut out light pollution and skyglow, available in 1.25", 2", clip-in EOS-C, clip-in EOS-Full Frame and clip-in Nikon-Full Frame
CLS to cut out light pollution and skyglow but with wider bandpass than the UHC, available in 1.25", 2", clip-in EOS-C and clip-in EOS-Full Frame
CLS-CCD as above but with an added IR-cutoff for CCD and CMOS cameras and modified DSLRs, available in 1.25", 2" and clip-in EOS-C
LRGB and 6.5nm Ha, Oiii and Sii narrowband for monochrome cameras, available in 1.25" and 2", as well as 36mm for the narrowband filters
685nm IR-Pass for planetary imaging, available in 1.25" and 2"
UV/IR-Cut for unfiltered monochrome cameras, available in 1.25" and 2"
Polarizing Moon filter for visual lunar observation, available in 1.25" and 2"