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ovl field flattener back focus

Perfect round stars across the entire image. Part Number: 20225. Does it reduce at all? This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. You are free to manage these via your browser settings at any time. Designed specifically for the Sky-Watcher Esprit-120 ED Apo Refractor, the new three-lens Focal Reducer/Flattener has a reduction factor of 0.77x. I also managed to connect my filter wheel between the flattener and the scope and was still able to achieve focus so I'm really pleased. Features standard 2" push-fit barrel for use with 2" focusers. I bought this to try and flatten the field on my TS 80mm triplet F6 scope when using it with a Nikon DSLR. Perfect round stars across the entire image. It corrects the stars completely up into the corners of my fullframe sony camera! 907 2895 01, First Light Optics Ltd All rights reserved © 2020, We use cookies on this website. NEW SkyWatcher Field Flattener for Evoguide 50 ED. A high-quality, non-focal-reducing Field Flattener optimised for DSLR imaging on refractor telescopes with focal ratios around f/5.5 to f6.0. It comes with a standard adaptor with M48 thread edge and 55mm back focus for use with Sky-Watcher's M48 Canon EOS (code 20237) and Nikon (code 20238) adaptor rings. Totally worth the money. William Optics ZenithStar 73 Field Flattener with Adjustable Backfocus. The flattener itself is way cheaper than the 'dedicated' one from Skywatcher yet as far as I can tell works flawlessly, giving nice round stars to the edge of the field of view. You are free to manage these via your browser settings at any time. No. A high-quality, non-focal-reducing Field Flattener optimised for DSLR imaging on refractor telescopes with focal ratios around f/5.5 to f6.0. Frustrating. Can connect with telescope both 2" nosepeace and 48mm. First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY, Company No. Prix excellent et envoi rapide, pas encore plus le tester faute de mauvais temps, mais FLO a fait sont travail et très bien. Designed for use with 400mm to 650mm focal length refractors with f/5 to f/7.5 focal ratios. For more about how we use cookies, please see our, Sky-Watcher Field Flattener for EvoGuide 50ED, Green Anodised Aluminium Screw-on End Caps. Skywatcher 120 St Eliminate field curvature in short, optically fast refractor telescopes with this handy 38mm clear-aperture, fully multi-coated field flattener. nice clear lens. Top service! Once I included this field flattener however the results were transformed. Home  >  Accessories  >  Reducers/Flatteners, Model:  skywatcher_FF_50edPart Number:  20186, NEW SkyWatcher Field Flattener for Evoguide 50 ED. 5892293VAT No. Flat stars to the edge, very nice product. 5892293VAT No. Threaded for 2" filters. Optimizes your fast refractor telescope for astrophotography. Without it, the scope was producing unusable images where the stars towards the corners were more like streaks than round stars. High quality CNC machined body with gloss black anodised finish. Features & Specification. Thanks flo. Will also provide much improved results on refractors with focal lengths narrowly outside this optimised f/range. OVL Field Flattener works flawless with Fullframesensors! It does yield flat stars to the edge! Some comparison pics can be found here http://stargazerslounge.com/topic/200692-equinox-66-advice/, First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY, Company No. Customer reviews Provides an evenly illuminated flat field. For those who dont want to loose Focal Lengh its the best way to go imo. I just wish the specs were listed on the webpage. Much friendlier option than the SW reducer/flattener. Once I included this field flattener however the results were transformed. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. I've been a little disappointed with my imaging results both my lack of post-processing skills as well as some of the effects caused by my Evostar 72ED this has improved the curvature effectThis coupled with the 72ED has made my AZ GTI (EQ Mode) with a DSLR and ASI AIR Pro a great portable/transportable astrophotography setupHighly recommend the screw in M48 M54 Skywatcher adapter (although its a little pricey) it makes a much more secure (threaded imaging train). Bought this for the new SW 72ed and it is just perfect. Integral T-Ring adaptor thread. The OVL Field Flattener works very well on my Skywatcher 72ed refractor telescope! The back focus is advised by the telescope manufacturers. £100 less than the "optically matched" reducer/flattener from SW which is not even optically matched, just frankenstiened from the the ED80's reducer/flattener. I bought this to try and flatten the field on my TS 80mm triplet F6 scope when using it with a Nikon DSLR. Thanks again FLO, I bought this for use with an Equinox 66. Since I took this off to attach the filter wheel, which has a low profile nosepiece anyway I now have a solid unit.I would recommend this flattener to anyone using a DSLR and a fast refractor. There was a delay with the delivery of this so FLO sent on the other items I'd ordered, with no extra postage charge for the flattener. I had to purchase a low profile SCT to T thread but the bonus is that with the flattener and a 2" LP filter its all focussed without adjustment (fully racked in). For this price its amazing! No info given. Home  >  Accessories  >  Reducers/Flatteners, Model:  skywatcher_field_flattenerPart Number:  20225. For more about how we use cookies, please see our, I've been a little disappointed with my imaging results both my lack of post-processing skills as well as some of the effects caused by my Evostar 72ED this has improved the curvature effect. Très content de ce produit. When using a DSLR and a refractor between f/5.5 to f/6.5 the field is flattened across the entire sensor. What's the % ect. When using small chips like popular 4/3rd's or 1" size sensors refractors up to f/7.5 will not experience any change in focal length. Guiding software is only interested in the centre of the star and is usually very tolerant of star shape so a flattener is not necessary. Merci Flo.A bientôt. -- larger possible illuminated field through elimination of the "T2 keyhole". Since most telescopes have 55mm back focus, we are providing the detailed guidelines for all our cooled cameras. Without it, the scope was producing unusable images where the stars towards the corners were more like streaks than round stars. Very Solid making. Prix excellent et envoi rapide, pas encore plus le tester faute de mauvais temps, mais FLO a fait sont travail et très bien.Je vous remercie encore car il n'est pas facile à trouver et même introuvable en France.

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