Utilizing FPL-53 synthetic fluorite glass, this telescope provides excellent aberration correction. $86.00. Get your optical train to have 55mm backfocus, and then . Save $-713.00. 11 replies; 524 views; teoria_del_big_bang; February 15; . The field-of-view with this reducer/flattener, the FLAT 73A, you will see a . . Skip to the end of the images gallery. The 2.5" 10:1 rack & pinion focuser is smooth, stable and reliable, providing no slippage over long imaging sessions. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. First image is without the field flattener with Nikon DX format sensor (APS-C) Next is the DX sensor with flattener, final 3 are with flattener and FX Full frame sensor. William Optics RedCat 71 APO. 2.5" R&P focuser - smooth, stable and reliable, no image shifting. Features an M63 male thread for a direct threaded connection to the Z73 on the telescope side. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring . The Petzval quadruplet lens design is well corrected and incredibly sharp. Adapters. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. with 0.8x reducer/flattener: 344 mm, f/4.7. . Flattener Flat73A for ZenithStar 73 $ 280.00 incl. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. Interface: M48x0.75 male thread. . Go to the William Optic website and get the technical drawing to set the distance. $284.00. You can use your Canon or Nikon DSLR directly with the use of an optional M48 camera . Gran Turismo series; Fluorostar series; CAT series Hot! GT102 2020 Package Includes GT102 three element design with center FPL-53 and other ED element glass (air spaced) All-new 3.3" R & P Focuser with 2 speed knobs 1:10 Mounting rings Innovative Bahtinov Mask. William Optics - Adjustable Reducer for Z73. William Optics Flat 73 1.0x Adjustable Flattener. New, dedicated 2" flattener by William Optics optimized for use with their Z73 full-frame Apo telescope. The stunning new William Optics Gran Turismo 71 Apo is the new jewel of the apochromatic refractor world. Free shipping. The ZenithStar 73 also comes with a 2.5" Rack & Pinion focuser and Dual Sided dovetail bar. William Optics Zenithstar 81 APO (1) 799.00 Add to Basket. . Dielectric Coating Diagonals; Erecting Prisms; Accessories. Adjustable Flat73 for Zenithstar 73mm ED APO. I am dismayed to find that there is no internal M48 thread for filters within the body of the flattener . ZenithStar series Hot! $768.00. William optics Z73. $86.00. The ZS71 ED has a 2.8-inch, air-spaced and fully multicoated doublet objective lens made from Ohara ED glass. William Optics. William Optics Flattener Flat73A for ZenithStar 73. Some telescope designs . . With a focal ratio of f/5.9 and focal length of 430mm, the WO Zenithstar 73 is the perfect instrument for imaging extended objects such as the California Nebula, the Rosette Nebula, the . The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. Super high precision "COPPER" T mount for Canon EOS full frame Cameras. William Optics Zenithstar IPS Theme by IPSFocus; Theme . Vendor William Optics Regular price $ 284.00 Sale price $ 284.00 Sale. For sale is a used William Optics Zenithstar 73 APO with WO Flat 73 Field Flattener and WO 50mm Rotolock Guidescope. Facebook. In my experience with . This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. All bought brand new as a package from William Optics earlier this year. The William Optics ZenithStar 73 mm Apochromatic Doublet (version II) features Ohara FPL-53 glass improved upon from previous models. On the camera side, the flattener has a male M48x0.75 thread. Skywatcher Field Flattener For Esprit 100 ED 189.00. Unboxing video of the William Optics Zenithstar 73 telescopealso how to fit the field flattener 73. . I decided to just keep using my FLT91. $218.00. . The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. Skip to the beginning of the images gallery. More on the way: This product will not ship immediately. William Optics Zenithstar 73 III APO Optical Tube with 2.5" RP Focuser (Gold) The William Optics Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Using FPL-53 glass this telescope provides excellent aberration correction. William Optics FLAT73R 0.8x Adjustable Reducer-Flattener is for use with the William Optics Zenithstar 73 OTA. Add to Cart. Requires an M48 threaded T-ring if using a DSLR camera. Mounting Rings; Mounting . William Optics Zenithstar 73 field flattener - posted in Refractors : Hey everyone, Im looking for my first small wide field refractor telescope and was meant to be looking for something a bit cheaper but I have absolutely fallen in love with the Zenithstar and from what I hear people have very good things to say about it. Save $218.00. Williams Optics ZenithStar 61II Special Features. Designed for APS-C size or smaller imaging chips (not for use with full-frame cameras). WO ZenithStar 73 or 81 - posted in Beginning Deep Sky Imaging: Trying to decide between WO ZenithStar 73 and 81 doublets for AP scope. . $218.00. New Back Focus Adjustable Field Flattener dedicated for William Optics Zenithstar 73. I am dismayed to find that there is no internal M48 thread for filters within the body of the flattener . Optically-matched 1:1 Flattener for ZS73 APO. New Back Focus Adjustable Field Flattener dedicated for William Optics Zenithstar 73 Covers full frame camera field of view Interface: M48x0.75 male thread Optional accessories: Canon 48mm T-ring Nikon 48mm. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring . So I screw it in to the 73a at the 19mm mark and it should be OK. Well its not. $218.00. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. This optional extra is a must if your objective is astrophotography and will set you back around 149. Guider series New; Finder series; Binoculars; Eye Pieces. William Optics Flat73A Adjustable Flattener Facebook; Twitter; Youtube; William Optics Flat73A Adjustable Flattener. Which one would you recommend in this case, both cost almost the same with field flattener/reducer: William Optics Zenithstar 73: f/5.9, 430 mm. The image is crisp, sharp and colour aberration free thanks to the use of top . The Flat 73R is a 0.8x Reducer / Field Flattener and the Flat 73A is just a field flattener. but I'm thinking of a Zenithstar 73 in almost the same way, with a . Choose Options. 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. Features an M63 male thread for a direct threaded connection to the Z73 on the telescope side. New Adjustable Dedicated Flattener 73A for William Optics ZS73. It is adjustable so you can set the right spacing that you need for your camera without the need for extension tubes. Contact us for estimated delivery. $218.00. It's nice and fast at F/5.9 and with a focal length of 430mm it provides really nice wide field views. Just be aware, that the distance of the sensor to the the front of the flattener is absolutely crucial. by William Optics. too expensive? As with . It works great with most cameras, camera lenses, and small scopes on either a Vixen-style mount or an Arca Swiss saddle. This is a wonderful edition to a Zenithstar 73 and essential to astrophotography. 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. By TerryMcK, September 25, 2019 in . I bought this set used and I never got around to using them. 48mm T mount for Canon EOS - Space Gray. . Adjustable reducer flattener Flat73R for Z73 . The William Optics 0.8x Adjustable Reducer-Flattener FLAT73R for Z73: This field flattener/reducer is for use with the William Optics Zenithstar 73 OTA. Optional accessories: Canon 48mm T-ring; Nikon 48mm T-ring; Back Focus Adjustment Guide for ZenithStar 73. William Optics Flattener 68-III. Find Similar Products by Category Designed for both astrophotography and wildlife photography, high power visual observing . William Optics Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA. SKU P-FLAT73A. le parrain 3 film complet en franais gratuit. CNC Handle Bar - carry handle and guide scope mounting. William Optics Zenithstar 73 first light By badhex, June 19, 2021. Flat Field Generators; Focus Masks; Focusers; Astro Essentials; Baader Diamond Steeltrack; William Optics. . This 0.8x Reducer/Field Flattener from William Optics is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. The full-frame sensor size is approximately 36X24. All New Slide-base . The 43mm image circle makes it a perfect match for full-frame sensors . The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. You can use your Canon or Nikon DSLR directly with the use of an optional M48 camera . The NEW William Optics Zenithstar 73 APO III features an air-spaced doublet lens with fully multi-coated optics and an Ohara FPL-53 ED glass element for sharp, high contrast images virtually free of false-colour. Zenithstar 73 APO (A-Z73III) William Optics. Full Review: https://astroback. When you join the William Optics Field Flattener (sold separately) to the Zenithstar 73mm telescope, it gives edge to edge results in deep sky imaging. VAT . Unit price / per . It is adjustable so you can set the right spacing that you need for your camera without the need for extension tubes. Diameter: 73mm Focal Length: 430mm Focal Ratio: f/5.9 Weight: 5.5 lbs Glass: FPL-53 Recommended Field Flattener/Reducer: William Optics FLAT73 If you have watched the videos on my YouTube channel, you'll know that my William Optics Zeinthstar 73 gets plenty of use in the backyard. You do not need to use a filter to capture astrophotography images using a camera and telescope, but they certainly help when taking pictures in areas of heavy light . The ZenithStar 73 also comes with a 2.5" Rack & Pinion focuser and Dual Sided dovetail bar. Brand new adjustable field flattener for the William Optics Zenithstar 73 OTA. The William Optics Zenithstar 73 APO Refractor is a telescope built for astrophotography. It is asking for a 55mm back focus, so I add the two extensions it comes with, add it up, and Im 19mm short. When paired with a William Optics field flattener (sold separately), the scope features a flat field across the entire 43.3mm diagonal of a full-frame sensor. The William Optics DSD 210 Plate has both a Vixen and Arca Swiss size at each end of the plate. "some William Optics field flatteners are fixed devices for particular telescopes like the ZenithStar 61 and ZenithStar 73" And some other flatteners are listed for multiple scopes, as they are adjustable in length, showing the required length next to it. . This model 73mm ZenithStar Doublet APO Refractor from William Optics boasts Ohara FPL-53 glass from Japan and a saddle handle bar that accepts Synta-style dovetails, such as the UniGuide guidescope or the Slide base guiding rings (not included). This is a brand new 2019 item which is now in stock at Rother Valley Optics. High power visual observing through the Zenithstar 73 is also hugely satisfying. I am aware that you do need a field flattener but at an extra 170 for . RotoLock Adapters; Camera / T-Mount Adapters; Mounting. The Focuser is 50.8 mm (2-inch), rack and pinion, with 10:1 dual-speed micro focuser and a 75 mm travel length. : 63617 Manufacturer: William Optics. Zenithstar 73-III is a greatly versatile and portable refractor telescope for beginners and veterans alike. March 2019. . Wish List Compare. databricks interview assignment. Stars appear sharp at the centre of the field but become progressively stretched out towards the frame edge and corners. Be the first to review this product. The Flat73A includes an M48 filter thread which will hold any standard 2" mounted filter. . $29.00. I recently purchased the WO Z73. weight: 5.5 lbs . Following in this tradition is the latest scope from William Optics, the ZenithStar 71 ED, a doublet refractor just 310mm long. Add to Basket. . Connection required the M63 adapter nosepiece. William Optics 0.8x Reducer & Field Flattener 73R for ZenithStar 73. The Flat73 1:1 field flattener is recommended for full-frame astrophotography cameras, and what I have used for the images on this page. I have a William Optics Zenithstar 73 and the 73a adjustable flattener (not reducer). Zenithstar 73II APO. By TerryMcK, September 25, 2019 in . $ 274.00. We repeated the exercise with the loaned field flattener, which left stars pin-sharp all the way to the . The William Optics ZenithStar 73 III is a two element apochromatic refractor with a focal ratio of f/5.9 and a focal length of 430mm. The William Optics Flat73A is an apochromatic 1x field flattener for the Zenithstar 73 . The plate has two 1/4-20 threaded holes. Derek P. Canada. VAT. Contact us for estimated delivery. Description. M48 Camera Threads. 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 can expect pinpoint stars to edges of your image. My DSLR camera attached to a William Optics Zenithstar 73 refractor. William Optics Camera adaptor M48 compatible with Canon EOS. It will deliver an image circle of >44 with a 3624 mm sensor. And it says at the bottom that the ZS73 flattener is only listed for the ZS73. Covers full frame camera field of view. The William Optics Zenithstar 61 II APO features an air-spaced doublet lens with fully multi-coated optics and an Ohara FPL-53 ED glass element for sharp, high contrast images virtually free of false-colour. Twitter. This is a brand new 2019 item which is now in stock at Rother Valley Optics. For a DSLR with a standard 55mm spacing between the front of the T adapter and the image plane you would unscrew the adjustable piece shown below until the left edge is at 11.2mm on the scale. Compare. . The Z73 sells new for $713, the Flat 73A for $218 and the Flat 73R for $284 (total $1215 new). 05/19/2021. Internal thread accepts 2" astronomy filters. There is a section near the bottom of the page titled "The best solution of 55mm Back Focus Length" for connecting to the flattener, and also a little picture called "Connecting Diagram" that shows what I think you are already doing now without the flattener. The Zenithstar 73 is a Two Element Designed APO refractor. New Adjustable Flat73A for Z73. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. This 0.8x Reducer/Field Flattener from William Optics is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. Out of stock. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. William Optics Flat 73 1.0x Flattener. Adjustable Flat73 for Zenithstar 73mm ED APO. The image is crisp, sharp and colour aberration free thanks to the use of top quality glass . by William Optics. It sounds like the camera should have come with all the adapters used for both situations. Brand new adjustable field flattener and 0.8x reducer for the William Optics Zenithstar 73 OTA. The ZenithStar 73 also comes with a 2.5" Rack & Pinion focuser and Dual Sided dovetail bar. Vendor William Optics Regular price $ 713.00 Sale price $ 713.00 Sale. On the camera side, the flattener has a male M48x0.75 thread. Features. PayPal is the only method of payment accepted and I will cover the PayPal fee. Designed for both astrophotography and wildlife photography. William Optics GT102 with 3.3" R&P Focuser (New Edition) HK$18,180.00. SGL Responsive - v4 . On the camera side, the flattener has a male M48x0.75 thread. I've just received the WO Flat73A Adjustable Flattener for my WO ZenithStar 73 APO. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. field flattener; refractor; build quality; YouTube; focuser; DP. SKU A-Z73III. William Optics Zenithstar 73 III APO (14) 549.00 Add to Basket. . The flattener is a lens that evens out the field, as this is slightly curved by the primary optics. William Optics v2 RedCat 51 APO f/4.9 (16) . Brand new adjustable field flattener and 0.8x reducer for the William Optics Zenithstar 73 OTA. The focal ratio of a telescope represents its light gathering ability, and the Z73 hits the sweet spot. by William Optics. No issues. New, dedicated 2" flattener by William Optics optimized for use with their Z73 Zenithstar OTA. Excellent Flattener. These are adjustable as per the image so you can set the right spacing that you need for your camera without the need for extension tubes. William Optics Zenithstar 73 APO. All New WO x0.72 Reducer Flattener 8. William Optics 0.8x Reducer & Field Flattener 73R for ZenithStar 73. The new CNC-machined and anodized handle . Features an M63 male thread for a direct threaded connection to the Z73 on the telescope side. First off, OPT was the only place I could find who had it in . A rotatable L mounting bracket. $ 278.00 incl. $713.00. This wide field doublet offers premium optics and impressive features in a compact and portable package. It comes with the original William Optics soft case. In stock. There is no need to use a field flattener with the RedCat, adding to its simplicity and practicality in the field. plus shipping costs. Provides high resolution images when used for astrophotography or wildlife photography and is a convenient ultra-portable telescope for . Compare. Email. Designed specifically for the William Optics Zenithstar 73 refracting OTA, this particular 0.8x field flattener and reducer is manufactured with full frame, chip-size DSLR . Integrated camera rotator. VAT . William Optics Flat 73 1.0x Adjustable . dans quel pays vivre avec 800 euros par mois. Customers also viewed . William Optics Zenithstar 73 APO Review; Astrophotography in Costa Rica (Carina Nebula) 73R - 0.8x Reducer flattener for Z73 William Optics. The Flat73A features adjustable spacing for use with a range of cameras and imaging systems. add to cart. For visual they are great for wider field views, but for planets for example they would be limited and also for smaller deep sky objects. Zenithstar 73II APO Zenithstar 73II APO Zenithstar 73II is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed specifically for the William Optics Zenithstar 73 refracting OTA, this particular 0.8x field flattener and reducer is manufactured with full frame, chip-size DSLR . Save $218.00. William Optics Flat73A Adjustable Flattener Facebook; Twitter; Youtube; William Optics Flat73A Adjustable Flattener. The William Optics 0.8x Adjustable Reducer-Flattener FLAT73R for Z73: This field flattener/reducer is for use with the William Optics Zenithstar 73 OTA. Super high precision "COPPER" T mount for Nikon full frame Cameras. $ 278.00 incl. The William Optics Zenithstar 73 APO has an f-ratio of F/5.9. M48 Camera Threads. William Optics Flattener Flat73A for ZenithStar 73 Product no. leroy merlin catalogue de a z . Covers full frame camera field of view. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring. Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. Wish List Compare. Shipping Delivery information; Address Store info +371 27013333Call us anytime; Contact Leave us a message Brand new adjustable field flattener/reducer for the William Optics Zenithstar 73 OTA. Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. plus shipping costs. SHARE. Ive spent the last 2 nights trying to adjust m field flattener. William Optics Flattener Flat73A for ZenithStar 73 Product no. This model 73mm ZenithStar Doublet APO Refractor from William Optics boasts Ohara FPL-53 glass from Japan and a saddle handle bar that accepts Synta-style dovetails, such as the UniGuide guidescope or the Slide base guiding rings (not included).