Folded refractor
WebYup, catadioptric telescopes use both. Check out a folded refractor. Also, look up the Chiefspiegler, which is technically a catadioptric scope, but unique and interesting nonetheless. I'm building a folded refractor scope that has an objective lens and two folding mirrors. Effectively reducing the length of my optical tube assembly. http://tucsonastronomy.org/wp-content/uploads/2024/01/FRO-Training-Startup-and-Shutdown-Procedures-Ver-1.1.pdf
Folded refractor
Did you know?
WebTom Lumenello's 5-inch Folded Refractor. Folded Refractor: A truss tube Dobsonian on the observing field. Trussed Dob: Looking west from Breezy Hill to the Green Mountians. Western View: Photos by Rich Sanderson. Peter Schultz speaks at the Lunar Morphology Workshop. Peter Schultz: http://forum.mflenses.com/how-to-easily-reduce-the-flange-distance-t83493.html
WebThis refractor is an achromat which normally would not be suitable for photography. Due to it's large focal ratio (f15) and long focal length(2276mm) this scope is a superb planetary performer. This is a photo of Saturn taken with a Celestron Neximager, a webcam-based imaging camera. This photo is a stack of 1000 frames in Registax. WebFolded refractor before the enclosure is pushed back. Arrows are pointed to: A rodent prevention unit, B clip to attach rodent prevention unit cord when scope is in use, C hold …
WebA folded refractor uses one or more optically flat mirrors to redirect the light path back onto itself and thereby reducing apparent OTA length. The redirections can also be outside the main light path plane allowing the eyepiece to be uniquely placed along the RA axis. This allows the visual observer to stay in one constant position the whole ... WebMar 1, 2001 · Combining the best features of reflecting and refracting telescopes, the folded refractor is an instrument deserving more attention. ERNIE PFANNENSCHMIDT is a …
WebJan 6, 2011 · FOR AUCTION: R. E. BRANDTS 12 in FOLDED REFRACTOR. A true 20th Century Renaissance Man, originally a musician, artist and machinist, Richard Brandt, …
WebCost of a new Unitron Model 142 - 3 inch Equatorial Refractor telescope = $435 ($3,596.84 in 2011 per CPIIC) Cost of a new Unitron Model 145 - 3 inch Photo-Equatorial Refractor telescope = $550 ($4,547.73 in 2011) Average cost of rent per month was $88. The average cost of gasoline was 22 cents per gallon. chevy impala chrome door handlesgoodwill donation address for taxeshttp://www.eisci.com/ad10rr1f.html chevy impala by yearWebWinners of the Telescope Competition at the Stellafane Convention, Springfield Telescope Makers Inc., Springfield, Vermont, USA chevy impala chassisWebUnitron 75mm f/16 folded refractor (model 131-C) APM 152mm F/7.9 Aachromatic refractor - Solar telescope APM 152mm F/7.9 refractor APM 152mm F/7.9 refractor APM 152mm F/7.9 refractor APM 152mm F/7.9 refractor Baader ERF 160mm, Baader astrosolar 3.8 (ND) APM 152mm F/7.9 APO refractor (doublet ED) - Solar telescope goodwill donation arlington maWebFind many great new & used options and get the best deals for Gskyer Telescope AZ70400 Travel Refractor Astronomy Telescope at the best online prices at eBay! Free shipping for many products! ... I love how adjustable the height is because we all range in size. This could easily be folded up with all the components and put in the carrying bag ... chevy impala bluetooth radioWebFeb 25, 2024 · eggplant wrote: In the telescope world, there is such a thing known as a 'folded refractor', where a series of flat mirrors are used with a long focus achromat (e.g. 1000mm focal length - 1000mm flange distance!) to reduce it's overall physical length. Whilst the examples online are quite long, there is nothing stopping you getting creative like this: chevy impala car and driver