Explore Scientific CLS City Light Suppression Filter - 310225 55mm Optical Design: Apochromatic Doublet Refractor

Optical Design: Apochromatic Doublet Refractor

Glass Type: Neodymium substrate

Compatible with Astronomical Filters

called using averted vision

which enables the Hyperions to be used with CCD and DSLR cameras for classic eyepiece projection photography

Explore Scientific CLS City Light Suppression Filter - 310225 55mm Optical Design: Apochromatic Doublet RefractorExplore Scientific Nebula Filter CLS 1. 25" Light Pollution Filter for City Light Suppression Useful where you do not have a dark sky site Observe deep sky objects from brighter areas Increase contrast of deep sky objects Range: 436 nm to 536 nm; peaks at 488 nm 98. 3% Transmission Fits 1. 25" Eyepieces This is a general purpose light pollution reduction filter which fits into your 1. 25" eyepieces that have internal (female) filter threads. The