I use a 1x Hotech flattener (which in fact can be used for any scope between f/5 and f/8) on my William Optics 81 GT IV and have been happy with it - although it isn't a reducer (so focal length is the native 478 mm). . William Optics Flat73R 0.8x Reducer Flattener with Rotator First Light: William Optics Flat6A III Flattener & 0.8 Reducer ... Focal Reducers - OPT Telescopes William Optics 2" APO Apochromatic Field Flattener and 0.8x Focal ... William Optics 2" APO Field Flattener and 0.8x Focal Reducer WE-FLAT-3 William Optics Red Dot Finder Kit with Vixen Style Mounting Base . . Description. Recommended Accessories. DSLR Astrophotography - William Optics Zenithstar 61 Review Will be amazed (and pleased) if you manage to illuminate the whole chip with the 3.3. Provides high resolution images when used for astrophotography or wildlife photography and is a convenient ultra-portable telescope . Using the FLAT73R reducer/flattener greatly increases the available field of view. Prime Focus William Optics 0.8x Reducer / Flattener v2 William Optics 0.8x Reducer / Flattener v3 William Optics 0.72x Focal Reducer & Field Flattener. FMC tripllet APO . Hyperion Focal Reducer 3D Printed 3D Printed. It features a 45mm image circle for use with sensors as large as full frame, while also retaining your ZenithStar 61's native focal length! Purchase your new William Optics 2" APO Field Flattener and 0.8x Focal Reducer WE-FLAT-3 from Opticsforyou.com today and you will appreciate the easy checkout process, . Our Price: $768.00. Table 3 shows the properties of each focal reducer and summarizes which reducer works with which William Optics telescope. WO Flat 6AIII will provide good illumination and flat field across 97% of full frame sized sensors. I have a William Optics Zenithstar 61 telescope. William Optics 0.8x Reducer-Flattener 6 spacing - Stargazers Lounge . FILTERS: Astrodon Ha 3nm-31mm, Astrodon OIII 3nm-31mm, SII 3nm-31mm INTEGRATION: 28.4 hours William Optics produces several models of focal reducers for their telescopes. More details on the William Optics page under Products > Accessories > Flatteners Additional Information . William Optics GT-71 II 2019 - Checked & Tuned - First Light Optics All flatteners accept 2" threaded filters. $86.00. I don't think the Celestron reducer will make any sort of contribution to a flat field with the ZS66 Steve but will be very interested to see the result. $279.00. Reducers/Flatteners | First Light Optics Versatile f/6.9 native focal ratio or f/5.5 when used with 0.8x flattener . Browse our full product choice for the tools and merchandise you need to tackle the task at hand. If you are looking for brighter and wider views or want to shorten your exposure time a reducer is the best way to go . 11 were here. This elegantly designed 2" reducer / flattener has been designed to optimise the flat-field imaging performance of William Optics f/6 to f/7.5 refractors.

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