Are Fast Telescopes Really Better? | Demystifying Astrographs

00:00 - Introduction 00:27 - The Hype Around Fast Astrographs 00:59 - Focal Ratio 02:18 - How To Compare Telescopes? 03:43 - Two Telescopes with the Same Focal Length but Different F-numbers 06:49 - What is Drizzling 12:00 - Two Telescopes with Constant F-numbers but Different Sizes 14:18 - Disclaimers & Considerations 16:02 - So Then Are Faster Scopes Better? 16:34 - Disadvantages of Fast Optics 19:16 - My Thoughts on Fast vs Slow Systems