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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
High-contrast visual observing with minimal chromatic aberration
dew control and filter system into one compact unit controlled entirely from your phone or tablet
Power and control are provided via a single USB Type-B cable
Customizable Design: Add advertising stickers or branding to the pagers to promote your business
Ideal for colour CMOS and CCD astronomy cameras
Askar 131F Flat Field quadruple Astrograph 1.5mm spacer High-contrast visual observing with minimalSelf flattened quadruplet Astrograph which can be used for visual observing and astrophotography. The Askar 131F is a large aperture telescope designed for astronomy enthusiasts, featuring a 131mm aperture, 983mm focal length, and a native F7. 5 focal ratio. It employs a quadruplet optical lens design with three elements in the front and one in the rear, including one piece of ED glass to effectively suppress chromatic aberration. The lens tube
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