How does one determine magnification? I have an Edmund Scientific Astroscan, 4-1/8-inch aperture, F/4.2 reflecting telescope, used with a 2.5x Barlow lens and a 28mm Plossl eyepiece. | Astronomy.com
ATEO-1
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500mm Focal Length 90mm Diameter Lens Professional Telescope Monocular Space Finder Observation F/5.6 Astronomical Scope - Telescope - AliExpress
Lecture 3
Celestron StarSense Explorer LT 114AZ 114mm f/9 AZ 22452 B&H
Lot - CELESTRON 8 TELESCOPE AND ACCESSORIES, 2000 mm f/1
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