Witryna1 maj 2024 · Page 3 of 5 - Long Achromats - posted in Refractors : Refractors are restricted by the length of the drawtube and diagonal and the diameter of the drawtube in the very same way a reflector is restricted by the secondary mirror.. A 2 inch diagonal has an optical path length of 4 inches or more. If the drawtube is 6 iniches long and has a … Witryna8 lis 2024 · OK, there have been other images on this camera to test exposure length and gain, but this image is the first project level image with this camera. I like the sensitivity, calibration works well, and Mure Denoise is very effective. This is an image of…
Long Achromats - Page 3 - Refractors - Cloudy Nights
Witryna1 lut 2024 · Classic Refractor Shoot-Out - posted in Classic Telescopes: Yesterday evening was the first opportunity for a head-to-head comparison between my latest acquisition - Meade (Vixen) 310 90mm - and my older Sears 6339A (RAO) 76 mm refractor. The skies were clear, the moon was rising later, temperature above … Witryna6 mar 2014 · The Orion ShortTube 80 Refractor Telescope Optical Tube reels in bright deep-sky objects and gets you in tight on solar system targets like Saturn, Jupiter, and the Moon. During daylight hours, the ST80 performs admirably as a terrestrial spotting scope, yielding contrasty views with crystal clarity. new listings dimock pa
Orion Observer 80ST 80mm Equatorial Refractor …
WitrynaThis versatile telescope's 80mm-aperture objective lens has a short focal length of 400mm (f/5), which makes the Observer 80ST extremely portable and compact. … WitrynaOrion offers telescopes for every level: Beginner, Intermediate, Advanced, and Expert. From our entry level beginner telescopes for amateur astronomers to our Dobsonian … Witryna7 mar 2024 · The Best 80MM Refractor for Astrophotography For The Money #1 Sky-Watcher ProED 80mm - EDITOR'S CHOICE Quality Price Our Rating Our top pick, the Sky-Watcher Evo, is one of those scopes that has it all. It was specially built for and from the desires and the needs of astronomers and astrophotographers. new listings duxbury