Redcat 71 focal ratio

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August undefined, 2024

WebThe REDCAT 71 is the perfect Apochromatic refractor for photographic astronomers demanding excellence in a small sized telescope. The petzval optical design features a … WebRedCat 71 Apo - 71 mm f/4.9 Flatfield Refractor for Astrophotography William offers with the REDCAT71 Astrograph a very well corrected telescope for astrophotography up to full …

William Optics RedCat 71 First Look LaptrinhX / News

WebNov 16, 2024 · Focal Length: 350mm F-Ratio: f/4.9 Focuser: Helical Image Circle: 45mm Weight: 6.5 lbs (OTA only) Included Accessories: Mounting rings, V-style dovetail, Cat … WebWelcome to the Cat family, RedCat 71! The William Optics RedCat 71 is a 71mm f/4.9 refractor with a Petzval design. Featuring a doublet front element with FPL-53 glass, plus a single central element and a single rear lens. Due to this design, the WO Cat71 offers a flat field of view without the need for an extra flattener and has an image ... flight mileage iad to ord

Apochromatic refractor AP 51/250 RedCat 51V2 OTA - Astroshop

WebOur calculator, at typical seeing of 2-4”, uses the Nyquist formula of 1/2 and the 1/3 to stop stars becoming square so the optimal range is between 0.67” and 2”. (0.67 = 2 / 3, 2 = 4 / 2). In summary, we are using Nyquist as a starting point, with a slight tweak, because we are typically sampling very small, circular, stars. WebThe William Optics RedCat 71 is a 71mm, petzval refractor with a focal length of 348mm (f/4.9). The 71 mm RedCat Petzval refractor is designed with a doublet made of FPL-53 … WebRedCat 71 APO Optical form Refracting telescope Effective caliber 71 mm Coating Comprehensive multilayer coating focal length 350 mm Focus ratio (F) F4.9 Dovetail plate … flight miles between destinations

William Optics RedCat 71 APO 350mm f/4.9 - T-C-71RD

William Optics RedCat 71 APO First Light Optics

Web71 Focal length (mm) 350 Aperture ratio (f/) 4,9 Resolving capacity 1,94 Limit value (mag) 12,3 Light gathering capacity 100 Max. useful magnification 142 Tube weight (kg) 2,8 … WebApr 26, 2024 · William Optics RedCat 71 Focal Length: 350mm Focal Ratio: F/4.9 Objective Size: 71mm Glass Type: FPL-53 Weight: 6.2 lbs Focuser: Locking Helical Field … chemist warehouse cleansing balmWebMar 21, 2024 · The Redcat 71's 350mm focal length works well with either one, so use what you like. Using a guide scope has the advantage of not needing to re-calibrate guiding if … chemist warehouse climara

"WebWilliam Optics RedCat 71 f/4.9 Petzval Apo Refractor Telescope - Red $1,698.00 In Stock Add to Cart Free Contiguous US Shipping Meade / Coronado 40mm f/10 PST H-Alpha Personal Solar Telescope $899.99 In Stock Add to Cart Free US Shipping William Optics Zenithstar 73mm f/5.9 Full Frame Imaging Apo Refractor with Soft Case - Red #... $730.00 … " - Redcat 71 focal ratio

Redcat 71 focal ratio

William Optics RedCat 71 APO telescope - Ganymedes

WebThis RedCat refractor has a 51 mm objective lens with 250 mm of focal length, resulting in a fast f/4.9 focal ratio. High-quality Ohara FPL53 glass comprise the lenses of this quadruplet refractor and provide a flat field, even for full-frame camera sensors. The RedCat 51 sports 48mm threads for compatibility with most digital and mirrorless ... WebMar 12, 2024 · The William Optics RedCat 71 is a 71-mm f/4.9 refractor that features a 350mm focal length which is well suited for taking widefield images of the night sky. It …

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WebSep 24, 2024 · William and James also revealed a prototype of their new RedCat 71 Petzval refractor. Expected in early 2024, this little gem is the big brother of the popular RedCat 51. The bigger scope will also have a focal ratio of f/4.9 and a big 45mm image circle. The first production models will be available in red. WebThere's a new cat in town. The new RedCat 71 delivers the same flat-field, color-corrected, Petzval APO we all love, in a larger package. Optics: Petzval APO Focal Length: 350mm F-Ratio: F/4.9 Video: youtu.be/_xh__wq5bc8

WebDesigned primarily for astrophotography, the RedCat 71 provides a flat image plane (without need of an additional flattener), an image circle over 45mm, excellent colour correction … WebFeb 12, 2024 · Its fast f/4.9 focal ratio and compact size make it ideal for convenient wide-field astrophotography or piggybacking. It incorporates a smooth helical focuser, a field rotator graduated by degree, a slot for 48mm filters and a reversible dovetail for either Vixen style* or Arca-Swiss mounting. Sky and Telescope Review of Redcat 51

WebWilliam Optics RedCat 71. There's a new cat in town. The new RedCat 71 delivers the same flat-field, color-corrected, Petzval APO we all love, in a larger package. Optics: Petzval … WebCalculate the resolution in arc seconds per pixel of a CCD with a particular telescope. Resolution Formula: ( Pixel Size / Telescope Focal Length ) X 206.265 Add New Equipment To Database Imaging Camera / Telescope Telescope: Focal Length: mm Barlow / Reducer: Camera: CCD Pixel Size µm CCD Binning = Resolution: " / pixel Guide Camera / Telescope

WebFeb 18, 2024 · The RedCat 71 provides a focal length very similar to the ZenithStar 61, but with the unique “2-1-1” 4 element optical configuration you will see improved image quality across a full frame 45mm imaging circle!

WebOct 30, 2024 · The faster the focal ratio of a telescope (or corrector), the narrower the focal plane is and therefore the more precise focus has to be. Second, the larger a camera sensor is, the more corrected the image field has to be to cover the entire image. ... such as the William Optics RedCat 51, is that the focusing mechanism moves the entire image ... chemist warehouse clayton roadWebAug 27, 2024 · This is usual as it decreases both the focal length and focal ratio of your telescope, enabling more light to be collected from a deep sky object at the same time. … flight miles carbon calculationWebSep 24, 2024 · William and James also revealed a prototype of their new RedCat 71 Petzval refractor. Expected in early 2024, this little gem is the big brother of the popular RedCat 51. The bigger scope will also have a focal … chemist warehouse clayton vicWebDiameter: 71mm Aperture: f/4.9 Flattener Petzval Flat Field Focuser: Helical Focuser with 2GT Gear Ring Color: Red Lens Material: FPL-53 Strehl Ratio: 0.95+ Camera Format: Full Frame DSLR / Mirrorless / CMOS / CCD T-Mounts Supported: Canon EF, RF Nikon F, Z Sony E Pentax K Micro Four Thirds (M4/3) FUJI X Tube Length: 435mm OTA Weight: 2.8kg chemist warehouse clinellWebAug 27, 2024 · 71mm (2.8”) Aperture 350mm Focal Length f/4.9 Petzval Doublet Optics As with the RedCat 51, the RedCat 71 uses an ED “quadruplet” design – really, a Petzval – with a 2-element objective lens and 2-element field flattener/reducer, each with one extra-low-dispersion (ED) glass element. flight miles chicago to omahaWebThe William Optics RedCat71 is a 71-mm f/4.9 refractor that features a 350mm focal length for fantastic widefield images of the night sky. The optical design is a Petzval design with a doublet front element incorporating FPL-53 glass, plus a … flight miles dfw to dohWebFeb 8, 2024 · RedCat 51 Specifications: Optical Design: Petzval Apochromatic Refractor (4 elements in 3 groups) Lens Type: Prime Diameter: 51mm Focal Length: 250mm F-Ratio: F/4.9 Weight: 3.2 lbs Focuser: Calibrated Helical Mounting Style: Vixen/Arca-Swiss The RedCat 51 mounted to an iOptron SkyGuider Pro. Focal Length: 250mm chemist warehouse cleveland st surry hills