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Optical Design: Apochromatic Doublet Refractor
called using averted vision
MiniTower Pro
It can also be used on the Advanced CG-5 GT mount
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
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