Made of FPL51 and Schott glass, the Quattro Coma Corrector will improve the appearance of stars around the outer edges of the field of view. Telescope Adapter Plates for Solar Filters, Canon and Nikon adapters available (sold separately). Made with extra-low dispersion (ED) FPL51 and Schott glass with a fast f/4 focal ratio for imaging, this accessory corrects for chromatic and spherical aberrations that create halos to appear around bright stars and other objects and cause colors to shift. The Skywatcher S20204 Coma Corrector is an optical correction device with 48mm threads and is made expressly for all f/4 Quattro Imaging Newtonians. Magnification remains unaltered. This is the coma corrector you want. © 2000-2020 B & H Foto & Electronics Corp. 420 9th Ave, New York, NY 10001. F4 Coma Corrector - 2" ... Optimised for Sky-Watcher superfast f/4 Quattro imaging Newtonians, delivering stunning wide-field views with pinpoint stars to the edge of the flat field. Sky-Watcher Quattro Coma Corrector. Create a B&H Account, America's Best Customer Service List-Newsweek, Prices, specifications, and images are subject to change without notice. When I bought my Explorer 200pds I checked out the forums to find out if a coma corrector was a "must have" or a "nice to have". Optimized for Quattro imaging Newtonians, the Sky-Watcher Quattro Coma Corrector, delivers stunning wide-field views with pinpoint stars to the edge of the field while the magnification remains unaltered. This allows you to see pin point stars across the whole field of view. F5 Coma Corrector. With this product, you earn 300 loyalty point(s). Magnification remains unaltered. Store #0906712 Elec. Take full advantage of your full-frame Digital SLR camera and produce superb flat field images without any increase or reduction in magnification. The Sky-Watcher 2” F4 Coma Corrector is designed to overcome the vignette effect that occurs in Newtonian telescopes. Sky-Watcher Quattro Coma Corrector Delivers stunning wide-field views with pinpoint stars to the edge of the field. Features a 4 x element design with one element … Customer reviews. Enter new zip code to refresh estimated delivery time. We Do Right by Our Customers JavaScript seems to be disabled in your browser. Wednesday, 22 July 2020 | Paul. These work fine on f4.5-f5.0 Newtonians but were pretty poor on the f4 Quattro, with coma still evident at the corners of the frame. F4 Aplanatic Coma Corrector. Perfectly round stars all the way to edge of frame, though I did have to dial in the back focus first. Find more about this! Sky-Watcher Quattro Coma Corrector Delivers stunning wide-field views with pinpoint stars to the edge of the field. The Quattro 8in is a fast f/4 (800mm focal length) Newtonian with extra features that make it a really nice OTA for imaging as well as wide field visual observations. Using the corrector enables users to achieve tack-sharp focus with true color rendition across the entire field of view - especially at the edges. Fortunately there is the moderately priced Baader Multi Purpose Coma Corrector to address this problem. Speed up future orders, see order history, create wish lists, and more. Despite i got the opportunity of testing Skywatcher Quattro coma corrector with high success (almost no coma), it was borrowed so I’ll afford mine next week. Magnification remains the same. You have until Feb 01, 2021 to return or exchange items bought after Oct 19, 2020. It helps astro-imagers improve their photos of the sky. After all, we would be nothing without you and we... © 2020 Woodland Hills Camera & Telescope, All Rights Reserved. Only for use with F4 Newtonian. You must have JavaScript enabled in your browser to utilize the functionality of this website. I'm sure a bit more tweaking with the shims would have got things spot on. This Sky-Watcher coma corrector will bring your Quattro imaging to the next level and deliver stunning wide field views with pinpoint star to the edge. Serv. Optimised for use with Sky-Watcher f/5 Newtonian reflecting telescopes, this field correcting lens provides flat pin point stars for both visual and astrophotography needs. Please enable javascript for your best B&H experience. Delivers stunning wide-field views with pinpoint stars to the edge of the field. I've had the 254 CF Quattro for a few years now, and I tried to do my best with the Skywatcher 0.9x coma corrector and also the Baader MPCC III cc. #0907905; Sec. The sky watcher coma corrector is the answer. I needed to use some shims to get the 55mm spacing between chip and the back end of the focuser and it still wasn't quite right. : Elec. Sky Watcher Coma corrector review If you own a 200P telescope like me and are fed up with getting egg shaped stars in the corners of your images then this will be of interest to you. Gen. #0907906. Its not designed expressly for a range of focal ratios (though it will work), its designed for your f/4. Optimized for Quattro imaging Newtonians, the Sky-Watcher Quattro Coma Corrector, delivers stunning wide-field views with pinpoint stars to the edge of the field while the magnification remains unaltered. The Skywatcher S20204 Coma Corrector is an optical correction device with 48mm threads and is made expressly for all f/4 Quattro Imaging Newtonians. The email address you entered was an invalid email. Coronado Solarmax II Double Stack Closeout! Optimized for Quattro imaging Newtonians, the. Thanks again for you didactic exercise! Spacing is critical. We love our customers! Magnification remains unaltered. So, to get rid of that particular aberration you will need a coma corrector like this one for your instrument. Deal. It fits into 2" focusers and requires a backfocus of 55mm (2.16"). Until now, the Explore Scientific is my first choice, because backfocus is so stable compared to other models if I consider the focal length. Average Rating (4 Reviews): Write a Review and share your opinions! We close every Friday evening to Saturday evening for Shabbos. Manufacturer rebates, terms, conditions, and expiration dates are subject to manufacturers printed forms NYC DCA Lic. & Home App. Hd. I got mine a few days ago and was able to give a good testing out on a nice clear night. Made of FPL51 and Schott glass, the Quattro Coma Corrector will improve the appearance of stars around the outer edges of the field of view. The inherent problem with reflectors is coma as you start to get away from the center of the field. ! f/4 ED coma corrector FPL51 and Schott g Fast Newtonians like this will inevitably be affected by coma. I'm also going to include the Quattro f/4 Coma corrector as it works absolutely perfect with this scope. Deal. If you have a Quattro. All other standard return policy conditions apply. Rating (max 5): My Coma is Corrected. Not responsible for typographical or illustrative errors.