Description. First Light: William Optics Flat6A III Flattener & 0.8 Reducer ... William Optics; Home ; Accessories ; Telescope Accessories ; Reducers, Correctors & Flatteners; Reducers, Correctors & Flatteners. New Adjustable Flat6Alll (T-mount not included) This very elegant 2" reducer/field flattener has been designed to optimize the flat-field imaging performance of William Optics F/6 to F7.5 ratio refactors. In Stock. Both optical correctors and focal reducers are designed to work best when the focal plane is at a set distance away. Free US Shipping. This accessory is a must-have for refractor astrophotography. with a thumbscrew to lock it into place! William Optics All New 0.8x Reducer / Adjustable Field Flattener 6AIII ... The William Optics GT-71 APO Triplet refractor features a 3-element f/5.9 objective with an Ohara FPL-53 extra-low-dispersion glass element for optimum colour correction and a new upgraded dual-speed 2.5-inch Rack and Pinion focuser with 1:10 Dual Speed. Simply loosen the set screws on the side and your adapter will rotate 360 deg. With either reducer (both were measured to produce 0.8x), the image covers 260' x 173' and the diagonal 313'. William Optics Zenithstar 81 APO Refractor Package with 0.8x Reducer ... Add to Cart. The William Optics Zenithstar 73 APO has an f-ratio of F/5.9. It threads onto the rear cell of 5" to 16" Celestron and Meade Schmidt-Cassegrain telescopes, making it possible to have a dual focal ratio instrument without sacrificing image quality. . Step 1: assemble the William Optics FLAT6AIII reducer. This will be handy if you also are going to install a Electronic Automatic Focus (EAF . If this scope is 100% photographic, then the GT-81 plus a flattener makes sense. It reduces focal Length by 0.7x, changing to f/5.6. Wish List Compare. Reviews & Ratings for William Optics 2" APO Apochromatic Field ... 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! This William Optics 2" Field Flattener & Reducer has been designed to optimize the flat-field imaging performance of William Optics GT71, GT81, Z81 & Z103 refractors. Hot. Takahashi - TOA 645 Flattener 0.99x for TOA-130NS . The large 50mm clear aperture lens will reduce vignetting to almost nil. If there is to be a . The William Optics Reducer-Flattener is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. William Optics 0.72x focal reducer/field flattener P-FLAT8 Just remove the three screws on the focuser adapter, take off the adapter, and thread the focal reducer/field flattener on in it's stead. - posted in Refractors : Hi. William Optics - How to install a FLAT6AIII reducer onto a Fluorostar ... $284.00. New William Optics Flattener 68III . The back focus is listed below for each style of William Optics telescope or other DSLR you choose to use. William Optics produces several models of focal reducers for their telescopes. In this review, I'll tell you why I think the William Optics Zenithstar 61 is a top contender when it comes to . William Optics 0.8x Reducer / Flattener III - Stargazers Lounge The large 50mm clear aperture lens will reduce vignetting to almost nil. Adjustable reducer flattener Flat73R for Z73 - William Optics Description. What can a field flattener or focal reducer do for my telescope? William Optics 0.8x Reducer & Field Flattener 73R for ZenithStar 73 Brand new adjustable field flattener and 0.8x reducer for the William Optics Zenithstar 73 OTA. Additionally, the 0.8 reducer reduces the focal length of the GT-81 from 478 mm to 382 mm and brings down the focal ration from f/5.9 to f/4.7. Prime Focus William Optics 0.8x Reducer / Flattener v2 William Optics 0.8x Reducer / Flattener v3 . I also checked that location by imaging the Sun on a piece of paper to find the focal plane. William Optics Red Dot Finder Kit with Vixen Style Mounting Base . The William Optics Zenithstar 61 is a doublet apochromatic refractor telescope that excels in deep-sky DSLR astrophotography. $86.00. Add to Cart. . Telescopes Canada. William Optics - Camera Concepts & Telescope Solutions $255.00. Categories Categories Brands Brands. VAT. In Stock. It is worth noting at the outset here, that William Optics recommends the v2 reducer for this telescope but does not recommend the v3 reducer. Astro-Tech Schmidt-Cassegrain f/6.3 Focal Reducer Field Flattener This compact refractor bridges the gap between a camera lens and a telescope. The reducer/corrector duplicates the rear cell . William Optics Adjustable Flat6A III 0.8x Reducer / Flattener 48mm T mount for Canon EOS - Space Gray. 2" DCL-52 Digital Camera Lens Adapter with 75mm Focal Length from William Optics for Digital Camera Astrophotography This innovative digital adapter .. £89.76. Lens William Optics 0.72x Reducer/Flattener 8 - P-FLAT8 This Adjustable Flattener is made for use with the ZenithStar 61 telescope. $278 . William Optics P-F6A-GT81 Focal Reducer / Focal Length - posted in Beginning Deep Sky Imaging: Ive been successfully using this focal reducer with my William Optics GT81 since about 2016, This focal reducer is rated x0.80 and with the Wilialm Optics GT 81 scope FL 478mm Ive therfore always calculated to be an equivalent FL of 382mm (478 x 0.80 M48 Camera Side Threads Maximum Backfocus GT71 = 64.1mmGT81 = 62.1mmZ81 = 60.2mmZ103 = 57.5mm Adjustment Setting for 55mm Backfocus GT71 = 9.1mmGT81 = 7.1mmZ81 = 5.2mmZ103 = 2.5mm . I'm using it with a 0.6x flattener-reducer. The Field Flattener and Reducer has 2″ threads on the opposite side to accept a 48mm (Wide) T ring for your DSLR . I removed the focal reducer and did some lunar observing. Sections of this page. Astro Essentials 0.5x 2" Focal Reducer. William Optics Flat6AIII 0.8x Reducer & Field Flattener - M63 to 2" . William Optics - Camera Concepts & Telescope Solutions Super high precision "COPPER" T mount for Nikon full frame Cameras. $86.00. William Optics Flat73R 0.8x Reducer Flattener with Rotator William Optics 66SD - Stark Labs Designed with nearly Full frame chip-size DSLR cameras in mind. Provides high resolution images when used for astrophotography or wildlife photography and is a convenient ultra-portable telescope . Anyway like ZWO's backlog due to Corona, William Optics is in the same situation. William Optics Zenithstar 73 APO Review | AstroBackyard . and thread the focal reducer/field flattener on in it's stead. Designed with nearly Full frame chip-size DSLR cameras in mind. This Vixen Focal Reducer takes the standard 1800mm (f/9) focal length down to 1278mm (f/6.4). IC 1318, The Butterfly Nebula in SHO narrowband false colors. William Optics 2" APO Apochromatic Field Flattener and 0.8x Focal ... William Optics RedCat 51 Review - AstroBackyard Steve says: "The William Optics Zenithstar 61 is a portable, well-made refractor with a short focal length of 360mm making it ideal for wide-field observations. Antares 0.63x Focal Reducer for F/10 Schmidt-Cassegrain - SCTFR. Increase your filed of view on the Zenith Star 73 with the William Optics 0.8x Reducer with built in rotator. William Optics Reducer-Flattener | Astronomy Technology Today The William Optics RedCat 51 Petzval APO is unlike any other telescope on the market. William Optics Adjustable Flat6AIII for FLT91 - David Astro William Optics 0.72x focal reducer/field flattener P-FLAT8 Recommended Accessories. Dr. Flat Master x0.8 Reducer/Flattener for GSO RC telescope . The focal reducer for the AX103S Refractor telescope is designed for APS-C format cameras. Cyclops Optics provides exclusively FREE screw smoothing service to all William Optics telescopes. Using the FLAT73R reducer/flattener greatly increases the available field of view. Super high precision "COPPER" T mount for Canon EOS full frame Cameras. with a thumbscrew to lock it into place! William Optics 2" APO Field Flattener and 0.8x Focal Reducer is especially recommended for users of the William Optics Megrez 80, 90 and 110. Add to Cart Show more Service & Support . Provides good illumination and a flat field across 97% of a full frame sensor field of view. WO 0.8X Focal Reducer CAMERA: ZWO ASI1600MM Cooled Pro GUIDING: Lacerta M-Gen II Autoguider. William Optics ZS 66 SD and focal reducers - Stargazers Lounge William Optics 2" APO Field Flattener and 0.8x Focal Reducer WE-FLAT-3 This 0.72X Focal Reducer and Field Flattener shortens the effective focal length a bit more than the FLAT7A, taking it from the native f/7.8 to f/5.6. Dave - Centroid has used the 3.3 with an ED80 and an H9 and found it very effective. Jump to. Focal reducers shorten the focal length and speed up the focal ratio of a telescope. with a . This focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell.
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