Astro Tutorial #1.6: THE F-RATIO "fast" vs "slow" scopes
12:11
Astro Tutorial #1.9: Telescopes, Eyepieces & Magnification
17:42
Astro Tutorial #1.17: Stacking - Exposure Time & SNR
9:03
Astro Tutorial #1.11: Telescope Mounts - ALT/AZ vs EQ
22:32
80% of Astrophotography Basics in 20 Minutes!
12:11
Astro Tutorial #1.5: Focal Length and Aperture
20:33
Are Fast Telescopes Really Better? | Demystifying Astrographs
11:43
Understanding Focal Length: Trading Speed for Detail
11:54