Focal reducer lens elements gso
WebThe reducer features 2-element fully multi-coated optical design and blacked lens edges in a black anodize aluminum filter cell. It also has additional 1.25" filter threads, so you can … WebFeb 21, 2010 · If the reducer-to-focus distance is longer than 1/2 the reducer's focal length, the reduction factor will exceed 0.5X, which for a simple lens is too aggressive. The 0.7X reducer's longer working …
Focal reducer lens elements gso
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WebGSO Focal Reducer. A Focal Reducer is an optical element used to reduce focal length, increase lens speed, and in some instances improve optical transfer function (OTF) … WebMar 26, 2024 · When attached to the GSO adapter, the distance to the lens is 1.6 inches. - The Astro-Tech Paradigm barrels are 1.00" inches long. - The Type 6 Naglers have barrels that are 1.15" long. - The longest 1.25 inch barrel I know of is the 22 mm Panoptic when used as a 1.25 inch only eyepiece.
WebAdd Apertura Lens Pen Optics Cleaning Tool to your order + $8.99 . ... The 2-element optical design with fully multi-coated optics means this Apertura focal reducer has a high-performance level. It is built to last, and the black-anodized assembly will slip into a 2" focuser or adapter and accept 2" barreled accessories via its non-marring ... WebNov 5, 2024 · The best focal reducer is a faster lens. You can get a 58mm f/1.4 Minolta lens for peanuts. F1.0 and F1.2 lenses are very expensive when you can get them, and then quite often rather soft wide open. I find it more effective to have a small collection of lenses and a good focal reducer. -- hide signature --. Cheers.
WebMay 12, 2024 · Petzval design vs Triplet with a flattener - posted in Refractors : I am looking for a quality refractor with a focal length in the range of 500mm to 700mm. One of the questions I have is what are the inherent advantages or disadvantages of these designs, if any. I am most familiar with Televue and Stellarvue and they both have scopes in that FL … WebSep 26, 2024 · The focal length of the reducer is the distance at which light that entered the reducer "from infinity" (meaning: parallel light rays), is forced (by the reducer) to converge to a single dot. This image shows the "firestarter" method of measuring focal distance of reducers using the Sun as the source of parallel light rays:
WebMar 28, 2013 · 0.5x Focal Reducer for visual - posted in Eyepieces: Hello, I have a question about these generic 0.5x focal reducers (Antares, GSO, TS), mostly used for imaging. From what Ive read these are simple doublet achromatic lenses 25mm f/4 that when placed at aprox 50mm from the field stop of the eyepiece it reduces the focal ratio …
http://www.gs-telescope.com/content.asp?id=136 sly and the family stone nWebEffective focal length: 414 mm (with corrector/reducer TSRED25DEL) Effective focal ratio: f/4.4 (with corrector/reducer TSRED25DEL) Objective: Air-spaced triplet objective with two ED elements: Focal ratio of the objective: f/5.5: Focuser: 3" rack and pinion focuser with M74x1 female thread connection and 2" / 1.25" receptacle: Drawtube travel ... solar powered pond water featuresWebSep 17, 2024 · I've been using the TS version CCD47 with the GSO RC6 and now I'm using it with the GSO RC8 carbon. TS recommends a distance of 70 - 90mm from end of the reducer to the sensor. The further away, the more it reduces. I extended it even to 100mm and the quality was still fine. sly and the family stone playlistWebJun 27, 2024 · About FL reducers (GSO) itself: they seem to be just a simple single element lens, no more. In most happy case (if I'm wrong) 2 element glued achromat. I … sly and the family stone murderWebGSO 6x30mm Straight Through Finder Scope with Mounting Bracket (Base Not Included) $44.00. In Stock. More Info. Free US Shipping. GSO 1.25" 2x "Shorty" Achromatic Barlow Lens # GS2BL. $33.95. In Stock. Add to Cart. sly and the family stone runnin away lyricsWebDec 7, 2016 · This superb 0.5x focal reducer has been designed to be used with a wide range of modern CCD cameras and eyepieces. The lens has a female 1.25" eyepiece filter thread and can be attached to camera and eyepiece nose … sly and the family stone original membersWebThe image quality is comparable with three-element lenses. The telescope can be used visually without any restrictions and, thanks to the optional field flattener and focal reducer, there is also no obstacle to astrophotography. The advantages and features of the Photoline 125 mm f/7.8 apo: sly and the family stone movie