Astro Tutorial #1.6: THE F-RATIO "fast" vs "slow" scopes Published 2020-01-10 Download video MP4 360p Recommendations 09:03 Astro Tutorial #1.11: Telescope Mounts - ALT/AZ vs EQ 09:00 What Focal Length Can Get Which Deep Sky Object? 07:16 Astrophotography f4 vs f2.8 vs f1.4 - - With DOWNLOADABLE IMAGES 12:11 Astro Tutorial #1.5: Focal Length and Aperture 19:23 Undersampling is BAD!!.. Or is it? 06:46 TELESCOPE: Saturn Shootout With Two 1.5m Focal Length Telescopes - Which One Wins? 14:15 Why You Should Upgrade Your Eyepiece 09:22 Astro-Tutorial #1.14: Attaching the Camera - Afocal Projection vs Prime Focus 20:17 Most Versatile Focal Length for a Telescope? 12:11 Astro Tutorial #1.9: Telescopes, Eyepieces & Magnification 12:15 Breaking the Rules of Astrophotography: Surprising Results from Pairing an ASI2600 and RedCat51 11:51 Focal Length vs. Focal Ratio: What They Do Conceptually! #astronomy #science #telescope 06:28 Telescope Focal Ratio Explained 11:54 Astro Tutorial #1.15: Barlow Lens and Focal Reducer 43:38 Telescope Optics Testing 15:03 Guide To Best Focal Lenghts In Eyepieces For Refractor And Reflecting Telescopes 11:05 What can you see through a $10k telescope? 34:41 How to Connect a Camera to a Telescope | Smartphone, DSLR, Mirrorless, Dedicated Astronomy 17:14 How to correctly use telescope accessories Similar videos 00:56 Focal Ratio explained in 60 seconds 14:25 F-Ratio: Not as important as you may think.. 02:18 Telescope Buying Guide: Focal Ratio & Focal Length 00:16 Giant Blackhead Removal from Back 0.1 ! 11:00 Review of the TPO/GSO/etc 6" f/6 Newtonian OTA telescope 06:03 Astro Tutorial #1.12: What is "seeing"? 27:51 What camera and pixel size for YOUR scope? Full explanation, let's get NERDY! 07:49 Astro Tutorial #1.13: Visual Astronomy vs Astrophotorgraphy 17:38 Telescope and It's Focal Ratio. 01:16 Sony a6500 - 3 Simple Hacks! 40:55 $300 for a Telescope: Refractor or Reflector? 08:26 IQ Test More results