Astro Tutorial #1.5: Focal Length and Aperture Published 2020-01-07 Download video MP4 360p Recommendations 12:11 Astro Tutorial #1.9: Telescopes, Eyepieces & Magnification 08:08 Astro Tutorial #1.6: THE F-RATIO "fast" vs "slow" scopes 20:13 How To Collimate A Refractor 09:00 What Focal Length Can Get Which Deep Sky Object? 14:31 Ten Things To Make Your Newtonian Amazing! 10:02 Amateur Astronomy Video 4 - Eyepieces, Focal Length, Magnification 17:34 SVBONY 5X Barlow (Full review) 11:54 Astro Tutorial #1.15: Barlow Lens and Focal Reducer 11:08 What is the difference between Barlows, Focal Extenders and Focal Reducers? 06:28 Telescope Focal Ratio Explained 13:53 Don't Buy A Telescope If You're New to Astronomy (AND WHY BINOCULARS ARE BETTER ;) 11:45 Taking Pictures of Stars at 2000mm Focal Length. 01:53 Don't do it 16:37 How To Use A Barlow Lens.. Tips & Tricks 06:48 "What is Focal Length?" - The science behind it explained. 10:25 Astro Tutorial #1.16: Deep Sky vs Planetary Imaging 06:52 Astro Tutorual 3.4: How to star collimate your telescope 09:03 Astro Tutorial #1.11: Telescope Mounts - ALT/AZ vs EQ 12:51 Collimation Step by Step | Backyard Astronomy and Skywatching Similar videos 06:51 Astrophotography 101 - Lens Guide and Recommendation 21:17 Telescope Size / Aperture Guide - How big of a telescope do you need for visual / astrophotography? 18:45 Telescope Back Focus: The Ultimate Guide [TAIC Short] 09:49 Astro Tutorial #1.8: Science behind telescopes - field curvature, coma corrector and light paths 13:54 The Only Three Lenses You NEED For Landscape Astrophotography 14:00 How to Choose the Right Focal Length Telescope for Astrophotography // Guide for Beginners 19:03 Astrophotography: 14 MUST KNOW Starting Tips! 11:22 Astrophotography with my Longest and Shortest Lenses 07:16 Astrophotography f4 vs f2.8 vs f1.4 - - With DOWNLOADABLE IMAGES 16:47 Astro Tutorial #2.3.1: OTA - Your first Telescope 00:46 STOP using UV filters ❌ DO this... 03:41 Most Important Part of a Telescope - Beginner Part 1 13:32 Using ZWO Astrophotography Cameras with Dslr Lenses & No Aperture Ring More results