Focal Length & Aperture: Go Small Or Go Big?
13:34
How Does Focal Length Change What Size Pixels a Camera Sensor Needs?
16:14
Big & Long VS Small & Short - Are big telescopes worth it?
11:43
Understanding Focal Length: Trading Speed for Detail
19:34
Single, Stacked or Tracked - Milky Way Photography
19:23
Undersampling is BAD!!.. Or is it?
12:11
Astro Tutorial #1.5: Focal Length and Aperture V2 - enhanced audio
11:42
Perfect Histograms in 60 Seconds Or Less--No Scripts, No Fiddling With GHS
20:17