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Search results for 'astronomy filters photo-nebular-filters si'

Celestron Powerseeker 80EQ
US$ 225.15
Manual German equatorial mount with setting circles to locate and track sky objects
Adjustable, full height steel tripod with deluxe accessory tray
Quick and easy no-tool setup
Accessories include a 20mm and 4mm eyepiece, an erect image diagonal, a finderscope, and a 3x Barlow lens.
Download Starry Night Basic Software with a 36,000 object database, printable sky maps and enhanced images including 3D renderings of stars, exoplanets, and galaxies
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$Artesky 80ED f/7 APO Refractor$ $Artesky 80ED f/7 APO Refractor$
Artesky 80ED f/7 APO Refractor
US$ 484.73

Artesky introduces the new line of APO ED refractors, the new 80mm doublet with 2 element objective, the first is a FCD1-B Ohara (Japan) element while the second is a Lanthanum element. It is possible to reduce it with a factor of 0.8x and bring it to a focal length of 450mm with factor F/5.6 or use it at full focal length with the 1x variable field flattener.
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