Telescopes
3 Radio Telescopes and Radiometers‣ Essential Radio Astronomy
Two-mirror telescopes: Cassegrain, Gregorian and variants
focal length telescope
The Plate Scale of a Telescope
Telescope magnification
Light Vortex Astronomy - Article: How to Very Accurately Calculate your Telescope's Effective Focal Length
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky & Telescope
Telescope Magnification Calculator
How Much Does A Good Telescope Cost?
Radio Astronomy Lecture Number 4
Optics for Astronomy
Telescope stats explained - BBC Sky at Night Magazine
A Barlow lens increases the focal length of a telescope without
The Arecibo Legacy Fast ALFA Survey
Astronomy Formulas Explained with Sample Equations | Telescope School
Telescopes and Microscopes
Cassegrain Formulas and Tips by Mike Lockwood
Telescope, CCD and Eyepiece Calculator - Deep Sky Watch
3.3.6 EPIC filters and effective area
Effective Antenna Aperture Calculator • Electrical, RF and Electronics Calculators • Online Unit Converters
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky & Telescope
How to Choose Eyepieces for Your Astronomy Telescope
Telescope Equations: Magnification
astronomical optics, part 3: the astronomical image
Low-Vision Aids - American Academy of Ophthalmology
