Zenithstar 73 vs redcat 51. It is a great wide field scope, tack sharp to the corners and built very well. Those are already flattened, which is why William Optics Zenithstar 61. But if you want to use the Redcat for DSO you'll want a more stable platform. 🤣 Considerations: William Optics 2019 Gran Turismo GT71 APO Triplet Refractor; William Optics New Super Zenithstar 81 f/6. I have a revolution imager, aZWO ASI294 and a ZWO ASI 385. $2,999. Also looking for a new laptop to run the mount and acquisition, thinking of a thinkpad or HP Envy. Zenithstar 73, Redcat 51, C5. 9. 17. Choose options. Looks like FRA300 will be more picky regarding to back focus. 00 ⛟ Free Shipping. Adjustable Flat 61 for Zenithstar 61 . and the REDCat 51 and while I do love my Zenithstar the Image Quality (round stars etc) from the RedCat are really Comparing high-end imaging refractors under 65 mm - posted in Refractors : Ive spent quite a bit of time searching and reading the forums here on CN over the past many months, but despite many overlapping threads, it seemed like this was worth a post. I own both the Redcat (kickstarter Edition) and the Star 71. 00 USD. Sale price $2,498. 5 Sale price $499. Adjustable Flat 73 for Zenithstar 73 . I agree that the focus mechanism is very Step into a world of precision astronomy with the William Optics ZenithStar 73 APO III, the ultimate tool for avid sky watchers and astrophotographers. Like DirtyRod, I 3d printed my focuser, but based in William Optics GT71 vs ZS73, which one? - posted in Refractors : Im looking at a few different telescopes, and trying to make some sense of the analysis numbers for each one. 00 USD Regular price $2,810. Greg, do you have a Zenithstar 61 II APO; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Vixen Optics. Fluorostar 91; Fluorostar William Optics Zenithstar 61. Color Red Space Grey. The Z73 is about as heavy as I would go on the SkyGuider Pro. Hi there, So my fiancé broke my Redcat. The only one that appears to be a higher aberration value Which telescope would be better to start with, Redcat 51 or Z61 with flattener? I want to mostly shoot DSO's with my D5600. The RedCat 51 (and all of its variations and upgrades) was an extremely popular and well-received optical instrument in the amateur astrophotography . 9 Petzval APO Refractor Imaging Telescope ProAstroz. RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; RedCat 71 & ZWO AM3 Tripod Bundle; Cat 91 & ZWO AM3 Tripod Bundle; Dual Scope Imaging Set; 4 Elements Petzval Design William Optics RedCat 51 APO Apochromatic Quadruplet Refractor Astrograph Telescope - RED v1. Diagonals The William Optics RedCat 51 is a great scope for beginners starting out in astrophotography or more experienced imagers looking for a lightweight, portable, and/or wide-field option without the drawbacks of a regular telephoto lens. William Optics RedCat 51 mm V3 WIFD F/4. Color Red Gold. The Zenithstar seemed to have same specs as the Evostar but has good reviews, but it has a higher price and would still need to buy a reducer. I currently have (had) a Redcat 51 and looking at a new purchase, while also upgrading from RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. 8x reducer for broader celestial views, and the 50mm Uniguider for improved tracking accuracy during long exposures. One thing you can do is go onto Astrobin and search I can absolutely recommend the latter. For astrophotography, you will want a Zenithstar and a corresponding flattener which is $700 together, same price as the Redcat. 51 AM. Fluorostar 91; Fluorostar 120; Fluorostar 132; Fluorostar 156; [Refurbished] RedCat 51 MK1. Following shot of The North America Nebula (NGC 7000) was made with my EOS 6D and Redcat on EQM-35. Debating the Redcat/Z61/Z73 question right now. Im a beginner, and I cant choose between Zenithstar 61 + its Flattener or Redcat 51? Which one would you choose and why? Another question, will I need something like the Stellarvue 9x50 The William Optics ZenithStar 73 III is an ideal telescope for wide-field deep-sky astrophotographers, regardless of whether you’re a beginner or an experienced imager. I currently have (had) a Redcat 51 and looking at a new purchase, while also upgrading from Comparing high-end imaging refractors under 65 mm - posted in Refractors : Ive spent quite a bit of time searching and reading the forums here on CN over the past many months, but despite many overlapping threads, it seemed like this was worth a post. Any advice is greatly appreciated! Zenithstar 61 II APO; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Redcat has I've narrowed it down to 3, the Rokinon/Samyang 135mm F2, the William Optics RedCat 51 or the Wiliam Optics Zenithstar 61 (with flat 61 field flattener). Im pretty new to astrophotography, having only taken constellation and Milky Way landscape shots with There is a new version of the Redcat 51 now which has a tilt/tip adapter on it. There was no real information other than theyre testing them. I cant make up my mind which one to purchase and was looking for some RedCat 71 vs Zenithstar 73 questions - posted in Refractors : If you already owned a Zenithstar 73 (purchased hastily because you didnt want to wait on the release of the larger RedCat back then) and now are really starting to dive head first into Astrophotography, is there an argument to be made for the RedCat 71 WIFD for a beginner or would the differences between RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; RedCat 71 & ZWO AM3 Tripod Bundle; Cat 91 & ZWO AM3 Tripod Bundle; Dual Scope Imaging Set; Zenithstar 73 III APO Sale price $730. Greg, do you have a Page 1 of 2 - Will Redcat 51 work good for EAA - posted in Electronically Assisted Astronomy (No Post-Processing): Any advice on a Redcat 51 to be used for EAA? I currently have a f/4 Newtonian 8” and was thinking of getting a second scope. This FRA300 seems interesting. Optics ZenithStar 81 Review William Optics ZenithStar 61II Doublet Refracting Telescope Review William Optics RedCat 51 Review William Optics RedCat 71 Review by Zane Landers. Pleiades Series. It is the cheapest, has the perfect focal length, nice focuser an good build quality. . The RedCat 51 stands out due to its unique blend of portability, performance, and style. Enhance your viewing with optional accessories like the Flat6aIII, a 0. This instrument is more than just optics; it’s designed with photographers in mind, offering a hassle-free pathway to capturing the night sky. Redcat 51 has been previously Here's the difference in FOV with your camera. I can absolutely recommend the latter. Add to cart. Gran Turismo Series. 9 I'm looking at purchasing a new scope. Zenithstar 81 WIFD Sale price $999. 5 RedCat 51 APO f/ Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Again, another Redcat 51 user. I get no CA at all with Redcat 51 is a premium astrograph-quality telescope. $799. Optical design I'm considering to go for the ZenithStar 73 with a guidescope on the Skyguider Pro. 5 and focal length of 275mm The Williams Optics ZenithStar 73 is a doublet refractor at 73mm f/5. RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. 5 NEW VERSION! William Optics 0. I used it all last year. Im pretty new to astrophotography, having only taken constellation and Milky Way landscape shots with The photos above include setups that use a William Optics Zenithstar 73 APO as the primary imaging telescope. At this point both optical systems are roughly the same price, but the Z61 gives me The latest William Optics RedCat 51 (Gen 3 WIFD) is available at High Point Scientific. Pleiades 68 WIFD Pleiades 111 WIFD. The focal length and f-ratio (250mm at F/4. The optics appear to be superb on the Redcat, but the Zenithstar has 30% more aperture. Building on the foundation of the Redcat series, the Cat71 WIFD offers a larger aperture to enhance your viewing experience, capturing more li RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. As an additional The William Optics RedCat 51 is a great scope for beginners starting out in astrophotography or more experienced imagers looking for a lightweight, portable, and/or wide The Redcat is better for widefield shots, because of it's faster optics and wider fov. But you can get a better view of the Nebula using a top-notch Nebula filter. I have 25 x 120" - and 5 darks at 120" NGC 7000 with Redcat 51 on Canon EOS 6D I'm a beginner, and I can't choose between Zenithstar 61 + its Flattener or Redcat 51? Which one would you choose and why? Another question, will I need something like the Stellarvue 9x50 Finder Scope? not sure if the doublet can match the petzval 4 element design. My thinking is that the Z73 is just too hard to point I'm finding the Redcat 71 to be every bit of sublime excellence as I hoped (my expectations were set by my experience with the Redcat 51, and William Optics Zenithstar 73). But both of them will hit the 11lbs / 5kg mark. Vixen-style & Arca Swiss type Dual side Dovetail Plate - Light Weight Edition. The flat-field optics, the smooth helical focuser, the quality build and finish it is all worth every penny, in my opinion. f/5. Add to Cart. The Redcat is a telephoto lens-telescope hybrid, I have it and really like it. For example the Zenithstar 61 is a 360mm doublet for 650 and you'll need to buy a flattener (possibly get a reducer/flattener depending) for 200 more, so 850 for a 360mm f/5. Pros. Fluorostar 91; Fluorostar 120; Fluorostar 132; Fluorostar 156; Bundles. 9 focal ratio, this telescope offers sharp, detailed views across a wide field—perfect for stargazing and capturing WO RedCat WO Zenithstar 61 II with reducer. The Redcat would also be a little more portable. Yet its color accuracy could be sharper in some cases. GLAgencies in South Africa are now the local distributers for this (and other) quality Williams Optics products. [Bundle] RedCat 51 WIFD & ZWO AM3 Full Package. Quick view Choose Options. This vs the (I think 4 element) Petzval RedCat 51 APO 250mm f/4. Would love a 100mm version. Part number L-RC51II. Tracking and guiding are much easier at shorter focal As far as price goes, it’s less a function of scope size, and more a function of its design. Forums; Members; Gallery; Events; Blogs; Code of Conduct; WO Zenithstar 73 III AP WO Zenithstar 81 APO Ultimately I plan to build a rig using my recently purchased SWAGti Zenithstar 61 or Redcat 51? - posted in Equipment (No astrophotography): I have Nikon D850 & iOptron SkyGuider Pro (with iPolar), will also get the Optolong L-eNhance filter. 9 vs Apertura 72mm FPL-53 Doublet APO Refractor Equipment Considering how the RedCat has much shorter focal length, and cheaper, leighter weight, smaller windsail, I'd say the RedCat would be a great starter for you as it's much more forgiving. The William optics RedCat 51 is a portable, small telescope with the best possible optics and optical design, especially fast and usable for astrophotography at a low possible price. The RedCat 71 is a little more expensive and demands more work to use than the smaller RedCat 51, but is still a great Page 1 of 11 - William Optics Redcat 71 announced - posted in Refractors : They just posted these 71mm Redcats on their facebook. 00. I really wanted to go for this. The Z73 is a doublet, which is about as simple as scopes go. I've included the flattener for the Zenithstar, I'm not sure if one is needed for the redcat. 61EDPH II: triplet FPL51. I didn Takahashi FC 76 DCU/DS vs WO Zenithstar 73/81 - posted in Refractors : Hi, I want to buy a small refractor. I noticed that analysis numbers for the Zenithstar 73 doublet were nearly all lower in the aberration list than the Gran Turismo 71 triplet. I currently use 3 scopes and 2 cameras in all mix/match combinations. So I can certainly attest that the 294 on Hi All, I have the following kit. What makes the William Optics Redcat 51 so special? The 4-element Petzval Redcat 51 is quite wide FOV and undersampled on 3. RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO AM3 Tripod Bundle; RedCat 71 & ZWO AM3 Tripod Bundle; Cat 91 & ZWO AM3 Tripod Bundle; Dual Scope Imaging Set; Zenithstar 61 II APO; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Redcat has a helical focused and this is a pain. 8x reducer for the William Optics Zeni. That adapter will be available (or perhaps is now) for previous Redcat buyers. The William Optics ZenithStar 73 is an extremely well crafted and compact refractor, an ideal instrument for wide-field deep-sky imaging with DSLRs View full details I wanted to do a comparison test between the William Optics RedCat 51 (WhiteCat / SpaceCat / NightCat 51 are limited colour versions but Optically Identical) The William Optics RedCat 51 III represents the latest update to the venerable RedCat 51, now offering the patented William Optics Internal Focus Design (WIFD). Or maybe the new William Optics GT71. I recently attached the EAF using this kit exclusive to Agena Astro. It does not require any flattener, has almost no aberration nor vignetting and the best part of it is the focuser (rack and pinion). Ex Tax:£224. WO Redcat 51 as primary optic? - posted in Beginning Deep Sky Imaging: Hello all, Havent posted in a forum in a long time. ASI2600, ASI294 . Quick view Add to Cart. Next. I use my DSLR/mirrorless with my WO Redcat 51 with no problem. 8/14mm Lens Manfrotto 190XPRO Manfrotto MHXPRO-3W SVBONY CLS clip on filter The following APO i have seen that gives fantastic imaging results was a William Optics v1. With an objective lens using high-quality FPL-53 ED glass, the Z73 APO is In summary the Redcat 51 is a highly portable apochromatic refractor with a flat field from edge to edge therefore removing the need for any field flatteners. It just works out of the box. 8 camera lens stopped to f/4. Redcat is a Petzval (4 element). There is a new version of the Redcat 51 now which has a tilt/tip adapter on it. I just used what was in the box for the camera; was I supposed to buy something separate or is this how I was supposed to do it? Also, Ive gotten some The ASI294 produces wonderful images on both the Redcat 51 and C5. for me the focuser is superb! Available in vibrant red or elegant gold, the ZenithStar 81 WIFD boasts a compact and durable build. Fluorostar 91; Fluorostar 120; Fluorostar 132; Fluorostar 156; The William Optics RedCat 51 II is a 51mm Petzval quadruplet APO refractor is here and available from Ontario Telescope and accessories. Telescope. 9 and focal length of 430 using FPL 53 glass. 99. Save $312. The redcat will have slightly better correction, but the Z61 I'm a beginner, and I can't choose between Zenithstar 61 + its Flattener or Redcat 51? Which one would you choose and why? Another question, will I need something like the I would stick with the Redcat 51 mainly because of its weight. For the telescope, I'm torn between a WO Redcat 51, and the WO Zenithstar 73. Lists the glass used. William Optics RedCat 71 Review by Zane Landers William Optics ZenithStar 73 Review William Optics ASI 533MC connection with Redcat 51 + questions about filters + guide - posted in Equipment (No astrophotography): I was just wondering if this was the right way to connect the ASI 533mc with the Redcat 51. William Optics has made some huge improvements to this already excellent and wildly popular original model. I am also considering the Esprit 80 currently and have found nothing that speaks against it. Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Looks very sexy Includes bahtinov mask Has rack and pinion focuser, probably better at focusing and likely stronger Oh wow, that actually looks really neat! Funnily enough, I was also considering the Zenithstar 73, and if there was an identical scope with the same glass but was I love the legendary performance of the RedCat 51. Fluorostar. £269. I noticed some tilt on mine but its pretty minor. Exciting to see some new sizes come out. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. Balance becomes increasingly important as you mount larger telescopes to the SkyGuider. With this William optics RedCat 51 aperture, Petzval optical design and f / 4. 9) of the RedCat 51 were comparable to many of the telephoto lenses astrophotographers were previously accustomed to. Greg. Looks very sexy Includes bahtinov mask Has rack and pinion focuser, probably better at focusing and likely stronger Oh wow, that actually looks really neat! Funnily enough, I was also considering the Zenithstar 73, and if there was an identical scope with the same glass but was Like the smaller RedCat 51, the William Optics RedCat 71 is a high-quality imaging refractor that combines the best aspects of telephoto lenses and traditional astronomical refracting telescopes into a high-quality, well-arranged, and easy-to-use package. While it may seem like getting a Zenithstar 71 is a good idea for the focal length and the fact its under capacity, it I'm a beginner, and I can't choose between Zenithstar 61 + its Flattener or Redcat 51? Which one would you choose and why? Another question, will I need something like the The candidates are; WO v2-U RedCat 51 APO WO Zenithstar 61 II APO WO Zenithstar 73 III APO WO Zeniths Jump to content. This is the latest WIFD version 3 with a whole new WIFD focuser. 75 micron pixels, but is a great little scope on APS-C sensors. RedCat 51 & ZWO AM3 Tripod Bundle; RedCat 61 & ZWO The Star Adventurer is perfect in terms of mobility - and really good for widefield. So the ZS61 will be slightly better for smaller objects. CAT series; Pleiades series; Gran Turismo series; With its sleek, robust design and innovative optical system, the Redcat 51 WIFD delivers crystal-clear, vibrant images, capturing the splendor of the cosmos with ease and precision. 9 focal ratio, it looks like William has accomplished his mission. With the WIFD design, the movement of the focuser is integrated inside the main tube assembly providing the benefits of a traditional two speed fine focuser, while not worrying about limitations typically Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. The original William Optics RedCat 51. 5 is a superb widefield imaging telescope with a flat field and The ASI294 produces wonderful images on both the Redcat 51 and C5. Another telescope that is an excellent match for this mount is the stunning RedCat There is a new version of the Redcat 51 now which has a tilt/tip adapter on it. Highlights: Exceptional Optical Quality: Boasting a Petzval-like design and a fast f/4. FLT-120 & ZWO Asi2600 Bundle; Mini / RedCat 51. OPT Radian Raptor vs Williams Optics ZenithStar 73 - posted in Refractors : The Radian Raptor is a APO triplet imaging refractor at 61mm f/4. Canon EOS 800D Skywatcher Star Adventurer Pro ( Awaiting delivery) Samyang 2. The Redcat 51 first appeared on the global market in 2019 and as expected Williams Optics produced a high quality, well-engineered telescope. But I went with the Redcat and I'm liking it a lot. 8x Reducer & Field Flattener 73R for ZenithStar 73 Brand new adjustable field flattener and 0. William Optics Zenithstar 61 II APO Gold. Discussions - Scopes / Whole setups; Browse. Since the whole optical block on the Redcat moves as a single unit, just correct back focus by focusing near/far. Fluorostar 91; Fluorostar 120; Fluorostar 132; Fluorostar 156; Cat 51 WIFD Sale price From $898. I also plugged details for your camera The redcat comes with a flat field of view whilst the zenithstar requires a field flattener. 00 USD Regular price $823. William Optics RedCat 51 v1. Greg, do you have a ESPRIT-80ED vs ZenithStar 73 - posted in Refractors : Hi, I consider on of the two mentioned it the title telescopes. 9 seems slow to me after using a f/2. The StarAdventurer really is meant for very small refractors (RedCat, a 61EDPH is marginal) and widefield lenses. MiniCat 51 WIFD RedCat 51 II RedCat 51 WIFD RedCat 61 WIFD RedCat 71 RedCat 71 WIFD. I have a budget of around £750/$1000 Have you considered selling your 72ED and getting something like a WO Zenithstar 73 instead? I have one and use it with a ASI294MC, good combo to me. Close. Fluorostar Series. The Redcat is a Petzval design, which is The William Optics Zenithstar 73 is an apochromatic doublet refractor telescope built for astrophotography. I am a bit confused between Takahashi FC 76 DCU & FC 76 DS or Wiliiam Optics Zenithstar 73/81 . So I can certainly attest that the 294 on Zenithstar 61 II APO; Zenithstar 73 III APO; Zenithstar 81 WIFD; 2 Elements APO Design. Vixen Optics SD103S FPL-53 ED Refractor Telescope. Previous.