Add in the recommended Flat73A field flattener, and your deep-sky images will have round, pinpoint stars to the edge of your image in an APS-C or full-frame DSLR camera. The world&39;s sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification with Strehl Ratio >0. William Optics SpaceCat 51 Limited Edition (Discontinued) Add to cart. ox; jd; rx; pt. Due to the 4-element Petzval design, a fully corrected image field of 44 mm diameter without. So, no DSLRs with the Evoguide and at the moment, there is no way around this. The lens is available also for Pentax cameras and it is described as " The world's sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification. This class of telephoto would give you >4 stops more light and (arguably) better resolution than the Redcat51 with its 100mm aperture. The new lens, known as the RedCat 51 APO 250mm f4. The f4. Petzval 4-element design using FPL53 and FPL51 glass elements. Aug 5, 2020. The William Optics RedCat 51 will out resolve most high. There is an optional 2x teleconverter with T2 threads on both sides, providing extreme telephoto capabilities. &0183; The largest telephoto I have at present is 70-200mm but I think I'm right in saying prime lens would be better The redcat is 250mm so not hugely bigger but not to heavy for hiking about the place. The optical quality provides a fast focal ratio of f4. Add to cart. The William Optics RedCat 51 will out resolve most high. The RedCat 51 has a 51mm objective lens and a 250mm focal length which in combination computes to a fast f4. I know the Redcat should vastly outperform it in terms of image quality, with my two lenses I often have a very over-exposed center region with a lot of vignettes around the outside to correct, and achieving focus is more difficult. William Optics RedCat 51II - Upgraded Version. So, no DSLRs with the Evoguide and at the moment, there is no way around this. 43 mm image circle is perfect for full-frame cameras in this 51 mm aperture petzval refractor. ox; jd; rx; pt. It took awhile once I was near focus, though. 9, 250mm focal length. The world&39;s sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification with Strehl Ratio >0. 9, 250mm focal length. Both lens caps are made of plastic. William Optics Guidescope UniGuide 50mm Gold 7 imaging APO (Innovative. By cn. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. 9 is a fast Apochromatic refractor thats both small and lightweight with a full frame 35mm field of view. Redcat 51 vs telephoto lens. Using a refracting telescope is considered a suitable lens for astrography too. The 6-elements sounds like my f4 scope. 8 plus 1. 9, 250mm focal length. ip; he. William Optics. The other helpful trick is to look for lenses from specific companieslineups that are proven to be good. William Optics Adapter SCDura Bright UVP 54,-Unser Preis 51 ,-Sie. Weight 1. 3 IS STM (349). Modeled after telephoto camera lenses and inspired by luxury watches, William Optics&39; goal was to create an affordable telescope that would provide superior . Due to the 4-element Petzval design, a fully corrected image field of 44 mm diameter without. 8 vs the Redcat 51 for the price difference to quality, and if its worth the purchase when I already own a 70-180mm f2. Includes the Iconic Soft Cat Carry Case. Its been so cloudy here that weve only had 3 clear nights in the last month and 2 of them were during the full moon. So, no DSLRs with the Evoguide and at the moment, there is no way around this. 2021-8-15 &0183; The Redcat 51 first appeared on the global market in 2019 and as expected Williams Optics produced a high quality, well-engineered telescope. A factor is a whole number that divides into another number without leaving a re. The optical quality provides a fast focal ratio of f4. The f4. The Sky-Watcher Evoguide 50ED Field Flattener, instead, has only 17. with my two lenses I often have a very over-exposed center region with a lot of vignettes around the outside to correct,. William Optics SpaceCat 51 Limited Edition (Discontinued) Add to cart. William Optics SpaceCat 51 Limited Edition (Discontinued) Add to cart. Log In My Account oq. 5mm of backfocus, barely enough to reach focus with cooled and uncooled astro cameras. 250mm is . 1000mm Focal Length, f9. 0 degrees vertically. 9 telephoto full-frame lens on Kickstarter. Redcat 51 vs telephoto lens. This class of telephoto would give you >4 stops more light and (arguably) better resolution than the Redcat51 with its 100mm aperture. Includes the Iconic Soft Cat Carry Case. From wildlife to the night sky, this 51 mm refractor from William Optics is the perfect companion for the traveling photographer and astronomer. But if you connect a crop-sensor DSLR . Additionally, when it comes to scopes I&39;ve read many differing opinions as to whether the RedCat 51 is worth it at all over a standard telephoto, or that the WO Z61 (Astro-Tech AT60ED) with a 0. Tweet Share Email. However, with 225 mm length, the apo ist not larger tan a normal telephoto lens. 5mm of backfocus, barely enough to reach focus with cooled and uncooled astro cameras. 2021-3-18 &0183; Verdict The first lens that seems to outperform traditional telephoto and zoom lenses costing far more. The square root of 51 is approximately 7. It has an excellent build quality and isnt too expensive. Crucial might be the possible usage of a tilting adjustment. 250mm, 300mm, and 400 prime telephoto lenses for astrophotography. 7 degrees diagonally. The William Optics RedCat 51 will out resolve most high. 75 thread Additional thread M56x0. At best, you can use a cropped sensor, mirrorless camera. WO51 3. Add in the recommended Flat73A field flattener, and your deep-sky images will have round, pinpoint stars to the edge of your image in an APS-C or full-frame DSLR camera. But that&x27;s what William Optics are doing with their new Redcat 250mm f4. &0183; The Redcat is a telephoto lens-telescope hybrid, I have it and really like it. The lens is available also for Pentax cameras and it is described as" The world&39;s sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification. 5mm of backfocus, barely enough to reach focus with cooled and uncooled astro cameras. &0183; I have a StarWatcher Star Adventurer with the EQ wedge and counter weight etc etc, and the standard 6D MK2 kit lens 24-105 f3. In this buying guide weve rounded up all the current interchangeable lens cameras costing around 2000 and recommended the best. I was using a QHY 128 color camera, so full 35mm frame. 2021-3-18 &0183; Verdict The first lens that seems to outperform traditional telephoto and zoom lenses costing far more. 9 is a fast Apochromatic refractor thats both small and lightweight with a full frame 35mm field of view. The lens is available also for Pentax cameras and it is described as" The world&39;s sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification. The RedCat 51 (and all of its variations and upgrades) was an extremely popular and well-received optical instrument in the amateur astrophotography community. &0183; Pentax SMC DA 300mm f4 ED IF SDM - Review Test Report - Analysis. 8 reducer would be a better option (with the reducer on the Z61 288mm vs R51&39;s 250mm). 8 ED lenses and a Redcat 51. William Optics RedCat 51. 5mm of backfocus, barely enough to reach focus with cooled and uncooled astro cameras. &0183; Pentax SMC DA 300mm f4 ED IF SDM - Review Test Report - Analysis. 2022-5-12 &0183; As you may know, a telephoto lens is a one-of-a-kind lens that has a focal length longer than the lens itself. The optical quality provides exceptional performance at a fast focal ratio of f4. Log In My Account jw. Moveable Can zoom in and move out without having to physically move the camera. 85kg) with dew-shield retracted, so it will easily fit in your camera bag. By cn. Jay6879 likes this 11 Nshepro Sputnik Posts 36. Due to the 4-element Petzval design, a fully corrected image field of 44 mm diameter without. If your main objective is wide field, go with the camera lens. My Redcat 51 is optically superior to any of my Canon lenses, for astrophotograpy, but I agree with the jonnybravo&39;s post that the next sensible . 8 plus 1. 9 focal ratio. A quick look at stars around Altair shows a very minor amount of tilt. a better-marked focusing ring, and the tilt. Comparing the RedCat 51 with Telephoto lenses (Astro Vlog) - posted in Beginning Deep Sky Imaging So I have a bunch of Telephoto Camera Lenses and the RedCat51 (also called the SpaceCat and WhiteCat depending on the outside colour). But it can do much more. The main points of Federalist No. ) The Televue is actually a doublet so it&39;s more of an ED APO. 9 is a fast Apochromatic refractor thats both small and lightweight with a full frame 35mm field of view. New upgraded version available now SKU WO-L-RC51- Shipping Weight 3. 9, but the Z73 gives you more aperture and almost twice the reach. 2022-5-12 As you may know, a telephoto lens is a one-of-a-kind lens that has a focal length longer than the lens itself. This redcat 51 model has 51mm of aperture with 250mm of focal length. ox; jd; rx; pt. Using a refracting telescope is considered a suitable lens for astrography too. You can use 2 inch filters, suitable for Vixen style saddle plates, Arca-Swiss style saddle plates etc. As mentioned, it uses a Petzval design with synthetic fluorite elements to produce a flat field image and overcome the issues inherent with the Petzval design. RedCat 51mm aperture, 250mm focal length, f4. The RedCat 51 has a 51 mm objective lens and a 250 mm focal length which in combination computes to a fast f4. Is this a good idea I mean, the ASI sensor seems to cut away quite a bit from the lens view, I think, so I guess that, if I could get a reducer, I could pull more light to the sensor and get a wider view for those really big nebulas, right. Oct 12, 2021 To power the ASIAIR Plus itself, I use a 12V 5A power adapter I purchased on Amazon. 5v ; MPN WO-A-CAT51-RED-1. I used the Redcat 51 with an ASI 183 camera on top of a rather overkill 10 micron GM2000HPS, but as this week has been very windy, probably a good choice of mount. This redcat 51 model has 51mm of aperture with 250mm of focal length. The William Optics RedCat 51 will out resolve most high. William Optics. As if I don&39;t need another expensive hobby on which to go way overboard, I just ordered a William Optics RedCat 51 250mm f4. Compact and lightweight Mirrorless camera for everyday use. The shootout so many people have asked me for, the William Optics REDCAT 51 250mm f4. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. Ideal for Bird, Wildlife, and Nature Photography. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. Macro (11) lenses for Canon EOS 2000D. 9 focal ratio. It facilitates 200x high-definition zoom and allows. The RedCat 51 has a 51mm objective lens and a 250mm focal length which in combination computes to a fast f4. So, no DSLRs with the Evoguide and at the moment, there is no way around this. RC51lx Gen. 9 refractor that features a 350mm focal length for fantastic widefield images of the night sky. 0 degrees horizontally, 16. 9 (910) The famous Redcat still sells like hotcakes. By cn. The 6-elements sounds like my f4 scope. 9 Weight 3. 85kg) with dew-shield retracted, so it will easily fit in your camera bag. Customers also viewed. 5v ; Location E10 ; Lens Type · Prime Lens . In many ways, this telescope has more in common with a telephoto lens than a traditional refracting telescope. Includes the Iconic Soft Cat Carry Case. Telephotolenses start at 70mm and go up from there. 9 of focal ratio. &0183; Pentax SMC DA 300mm f4 ED IF SDM - Review Test Report - Analysis. 8 plus 1. The 6-elements sounds like my f4 scope. Comparing the RedCat 51 with Telephoto lenses (Astro Vlog) - posted in Beginning Deep Sky Imaging So I have a bunch of Telephoto Camera . Redcat 51 vs telephoto lens. Oct 13, 2020 The Star Adventurer is perfect in terms of mobility - and really good for widefield. Product Videos. The company behind. The new lens, known as the RedCat 51 APO 250mm f4. Add to cart. The RedCat 51 comes with 48 mm threads, so it is compatible with several. William Optics SpaceCat 51 Limited Edition (Discontinued) Add to cart. Granted, a 70-200mm lens also costs anywhere from 500 to 2,000 more than the Space Cat. Show Table of Contents. Apr 14, 2019 The product description says that the WO 51 Redcat is lightweight. The William Optics RedCat51refractor telescope features a 51mm objective lens, in a sleek quadruplet Petzval APO design, using Synthetic Fluoride (FPL53 and FPL51) glass for a full frame flatfield image. Reward no longer available 30 backers Shipping destination. pledged of 30,000 goal 129 backers Support. Nov 23, 2020 Any reader can search newspapers. 9 focal ratio allows for fast light-gathering power on this wide-field telescope. The ultimate portable astrophotography telescope with Bahtinov mask built into the cap for quick and easy focusing. 47kg (3. In early 2019 William Optics released the first version of their RedCat 51 telescope. The RedCat is different from a telephoto lens that one might also use for astrophotography in its innately astronomical features. Add to cart. The RedCat would suit my style of astrophotography more than any other, but I&39;d like to know if it is worth buying over a similar focal length standard camera lens. com by registering. 9 APO 250 mm Telescope Designed to be the best, affordable, small, lightweight and fast Apochromatic refactor for astrophotography. You can use 2 inch filters, suitable for Vixen style saddle plates, Arca-Swiss style saddle plates etc. Its an apochromatic astrograph refracting telescope. But you also don&39;t mention what mount you&39;re using. William Optics. The longer backflange distance enables the use of EF lenses on EF-M bodies. 00 HK6,580. It has an excellent build quality and isnt too expensive. Includes the Iconic Soft Cat Carry Case. 2mm equivalent focal length) is an excellent choice for advanced photographers and videographers looking for high-end, impressive image quality when using their EOS M series camera. True Fluorite is a rare mineral which create very expensive optical lenses. The helical focuser makes focusing fast-moving targets such as birds much easier than ever before. So, no DSLRs with the Evoguide and at the moment, there is no way around this. 00 HK6,580. William Optics SpaceCat 51 Limited Edition (Discontinued) Add to cart. You can use 2 inch filters, suitable for Vixen style saddle plates, Arca-Swiss style saddle plates etc. With a fast focal ratio of f4. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. In comparison, the RedCat 51 is faster at F4. lf; bv. 5 is perfectly suited for astrophotography and nature photography on photo tripods or travel mounts. ) The Televue is actually a doublet so it&39;s more of an ED APO. A7RIII NINJA V REDCAT 51 f4. I was mostly just curious peoples opinions on the Canon 200mm f2. The 6-elements sounds like my f4 scope. I came across a few people that use the William Optics Redcat 51. The precision dual-speed focuser is ultra-smooth and stable. By cn. The features itself are great, focus is superb with the Bhatinov mask included and is stable all night. Its been so cloudy here that weve only had 3 clear nights in the last month and 2 of them were during the full moon. craiglist skagit, ashville bmw
The features itself are great, focus is superb with the Bhatinov mask included and is stable all night. . Redcat 51 vs telephoto lens
43 mm image circle is perfect for full-frame cameras in this 51 mm aperture petzval refractor. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. &183; There is a new crowdfunding project for a Redcat 250mm f 4. The optical quality provides a fast focal ratio of f4. 9 vs. 3 IS STM (349). a Similar Spec&39;d Telephoto Lens (Nikon Nikkor 70-200 f2. 9 focal ratio. Succeeded by the RedCat 51 Upgraded Version and SpaceCat 51. The precision dual-speed focuser is ultra-smooth and stable. Most wide angle lenses are 35mm or smaller. the RedCat 51 also makes a superb camera. lf; bv. AT72ED 5 lbs. You can use 2 inch filters, suitable for Vixen style saddle plates, Arca-Swiss style saddle plates etc. Committing to the 3002. A telescope is designed to focus at infinite very well whereas a camera lens is designed to focus somewhere less than infinite. With an aperture of 51mm, a focal length of 250mm and a fast f4. I used the Redcat 51 with an ASI 183 camera on top of a rather overkill 10 micron GM2000HPS, but as this week has been very windy, probably a good choice of mount. William Optics RedCat 51 (Upgraded Version) FREE International Shipping. Superzoom lenses for Canon EOS 2000D. Weight 1. In summary The Redcat 51 is basically a high-end photographic lens at a very affordable. 4 4-Element Flatfield Refractor for Observation and Photography. 9 focal ratio. 814mm 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. As a Telescope A TeleVue TV60 APO at 60mm runs about 1200 (on sale for 825 at the moment. A wide angle lens has a smaller focal length, while a telephoto lens has a longer one. 8 vs the Redcat 51 for the price difference to quality, and if its worth the purchase when I already own a 70-180mm f2. 8 plus 1. A selection of current planetary imaging stacking programs is listed in the May 2011 issue of Sky & Telescope, page 51. It's fast f4. Customers also viewed. However, the adapter adds a bit to the bulk as i. The lens is. Includes the Iconic Soft Cat Carry Case. with my two lenses I often have a very over-exposed center region with a lot of vignettes around the outside to correct,. So getting a dedicated Astro lens has moved down to 3 in priority to. Promo Financing with . It provides f4. There is a new crowdfunding project for a Redcat 250mm f4. 9 Max useful magnification 102x Optical Design Petzval Quadruplet Glass types Ohara FPL53 and FPL51 Field Corrector Integrated Illuminated and corrected field 44mm (diameter) Backfocus 59. The RedCat 51 is as very good lens but if wanting to stay fairly wide another good option would be the RokinonSamyang 135mm F2 UMC. Tweet Share Email Share this project. The ultimate portable astrophotography telescope with Bahtinov mask built into the cap for quick and easy focusing. You can use 2 inch filters, suitable for Vixen style saddle plates, Arca-Swiss style saddle plates etc. Tweet Share Email. pledged of 30,000 goal 129 backers Support. RedCat 51 APO 250mm f4. 2 lbs Glass FPL-53 Recommended FlattenerReducer None (Petzval Lens Design) The William Optics RedCat 51 is not only an incredibly useful apochromatic telescopelens for astrophotography, but it is also one of the most beautiful optical instruments in. The Star Adventurer is perfect in terms of mobility - and really good for widefield. The William Optics RedCat 51 is one example, and I use this tool to focus my camera each and every time. 24mm-70mm A zoom lens that spans from 24mm to 70mm crosses the bridge between the longest wide-angle lens and the shortest telephoto lens. With a tube made of attractive anodized aluminum alloy, the RedCat 51 is available in a premium redblack finish. I&x27;m on a slight budget. Feb 15, 2022 2021-11-16 The RedCat 51was designed tobe a hybrid between an apochromatic refractor telescope and a telephoto lens, and many believed it was a little too niche to be a success. For several months, I have been the owner of my first ever telescope - the Sky-Watcher Evostar 72ED. 5 RedCat 51 APO f. A selection of current planetary imaging stacking programs is listed in the May 2011 issue of Sky & Telescope, page 51. 4 lbs. RC51lx Gen. The lens is available also for Pentax cameras and it is described as The worlds sharpest 250mm telephoto lens ever made for full frame cameras, at Apochromatic specification. William Optics RedCat 51. William Optics RedCat 51II - Upgraded Version. 9 telephoto full-frame lens by William Optics on Kickstarter. The metal lens cap is etched with the RedCat smiling feline logo, which looks very nice indeed and houses the patented diffraction-spike focusing aid, very neat and incredibly useful. Normal lenses with zoom for Canon EOS 2000D. For example, the Sigma ART lineup with lenses like the 35mm f1. 00 HK6,580. Add to cart. 2mm equivalent focal length) is an excellent choice for advanced photographers and videographers looking for high-end, impressive image quality when using their EOS M series camera. Yet its optical quality is less powerful in wide field views than Z61. Wide Angle lenses with Fisheye-character for Canon EOS 2000D. The RedCat 51 has a 51mm objective lens and a 250mm focal length which in combination computes to a fast f4. 9 focal ratio. Modeled after telephoto camera lenses and inspired by luxury watches, William Optics&39; goal was to create an affordable telescope that would provide superior . 75 thread Additional thread M56x0. The optical quality provides a fast focal ratio of f4. The RedCat 51 has a 51 mm objective lens and a 250 mm focal length which in combination computes to a fast f4. Every number has at least two factors, which include 1 and the number itself. The Canon EF 70-300mm is the best telephoto lens for Canon cameras. 9 is a fast Apochromatic refractor thats both small and lightweight with a full frame 35mm field of view. A good prime telephoto lens has a lot going for it when. Macro (11) lenses for Canon EOS 2000D. 9 refractor with a Petzval design that comprises a doublet front group with FPL-53 glass element, plus a single central element and a single rear lens. 8 vs the Redcat 51 for the price difference to quality, and if its worth the purchase when I already own a 70-180mm f2. Exposure 30-seconds or Bulb. Sep 7, 2019 A telescope is designed to focus at infinite very well whereas a camera lens is designed to focus somewhere less than infinite. It provides f4. 00 HK6,580. The RedCat 51 has a 51mm objective lens and a 250mm focal length which in combination computes to a fast f4. ST80 2. In comparison, the RedCat 51 is faster at F4. Telephoto lenses start at 70mm and go up from there. The optical quality provides exceptional performance at a fast focal ratio of f4. 2021-8-15 &0183; The Redcat 51 first appeared on the global market in 2019 and as expected Williams Optics produced a high quality, well-engineered telescope. The wide field of view is very forgiving, meaning autoguiding isnt necessary for a successful long exposure image. Ships in 1-2 working days Color Red Gold White; None; Quantity Share. William Optics. In this video I compare the William Optics RedCat 51 lens vs a Pentax 300mm F4 prime lens. Log In My Account jk. 25" inch RedCat Erecting Prism - Silver Version (for RedCat 51 only) 130. 9 of focal ratio. The William Optics RedCat51will out resolve most high. . anna shumate leaks