Focal Length & Aperture: Go Small Or Go Big?
11:43
Understanding Focal Length: Trading Speed for Detail
16:14
Big & Long VS Small & Short - Are big telescopes worth it?
13:34
How Does Focal Length Change What Size Pixels a Camera Sensor Needs?
19:23
Undersampling is BAD!!.. Or is it?
12:11
Astro Tutorial #1.5: Focal Length and Aperture V2 - enhanced audio
14:46
How to Tell If Your Image Needs More Integration Time
12:11
Astro Tutorial #1.5: Focal Length and Aperture
12:20