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Finder: 6x30
The peak QE in the NIR around 800nm is as high as the peak QE in the visible wavelengths
the CGEM II 925 gives you over 1000 times the light gathering power than the unaided eye
Thereafter the air surrounding the Lunt Solar Telescope Etalon can simply be compressed or decompressed by the tuning system in order to change the air pressure between the surfaces
ZWO FF90 - 90mm f/6.8 Flat Field APO Refractor - FF90-APO Lunt Solar Telescopes Finder: 6x30ZWO FF90 APO Flat Field Apochromatic Refractor Main Features Flexible Connectivity for Multiple Configurations Lightweight & Compact The ZWO FF90 APO features a 90 mm aperture and 609 mm focal length (f 6. 8), offering an excellent balance between portability and performance. The optical tube weighs just 3. 92 kg, with a total system weight of 4. 52 kg including mounting rings and dovetail plate. Four Element Optical Design The FF90 APO features a
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