8 inch classical cassegrain telescope

3000, 2 inch T-2 Camera Adapter . - Oakland, CA 94619 Chabot is the largest public telescope facility in the country, home for . George Normandi. Rs. I enjoy having the spikes on my images. The scope has a fully automated GoTo mount with a database of over 40000 celestial. Found inside – Page 39It will outperform Schmidt-Cassegrains and Maksutov-Cassegrains of 8-inches aperture, and on occasions, it has provided better images of Mars obtained with my own 16.5-inch DallKirkham Cassegrain. Found inside – Page 72The 6-inch Dobsonian is the classic beginner's telescope, capable of revealing terrific detail on the Moon and ... It can do this without being polar-aligned, once it has been 8-inch Schmidt-Cassegrain telescopes are strong contenders. They are made by Guan Sheng Optical in Taiwan and are sold by Agena Astro, Astro-Tech, iOptron, Orion Telescopes, and Third Planet Optics (TPO). . . Brighter image due to 99% dielectric coating on primary and secondary mirror. Ships from and sold by Orion Telescopes & Binoculars. It comes in a soft travel case with a 25mm Sirius Plossl 1.25″ eyepiece, a 45-degree correct-image diagonal, and a 6×26 correct-image Finderscope. This telescope offers views that rival apochromatic refractors at a tiny fraction of the price. Found inside – Page 46So too is the best-known telescope of them all – the Hubble Space Telescope. However, the famed 200-inch Hale reflector on Palomar Mountain in California is essentially a classical Newtonian/Cassegrain. (This telescope has actually ... 1740. STAR INSTRUMENTS guarantees a minimum of 1/4 wave front, 1/20 wave r.m.s. In this article, I review the GSO 8-inch GSO Ritchey-Chrétien. The scope was an immediate success, offering high quality optics in a compact package that was reasonably affordable. Found inside – Page 275adopted until after 1950; many modern telescopes including the Hubble Space Telescope use this design, which gives a wider field of view than a classic Cassegrain. During the period 1850–1900, reflectors suffered from problems with ... Read the entire detailed review on page 66-69 of the December 2019 digital or print issue of Sky & Telescope. With or without a focal reducer/field flattener, the images are flat and aberration free. Rs 2820, 25 mm Plossl Eyepiece 1.25" . . I also purchased a Technical Innovations Robofocus so I could focus the telescope remotely using my computer. #25 / 33. All carbon fiber versions have black tubes. Rs. With a focal length of 2436mm, it's ideal for crisp and razor-sharp visual observation and imaging. . Cassegrain Reflectors and Cassegrain Catedioptrics work in different ways, the former utilizes your classic Reflecting technology and mechanisms. Ritchey-Chrétien telescopes are the telescopes of choice for major observatory instruments. Found inside – Page 75Portable Power For Field Use Of Your Telescope . ... Phone ( 812 ) 847-2532 WANTED Stable mounting for 12.5 " Newtonian / Cassegrain ( approx . ... ODYSSEY 8 INCH LARGE APERTURE $ 239.50 " THE WORLD'S GREATEST TELESCOPE VALUE ! 40mm Plossl Eyepiece 1.25" . Tinsley produced these fine scopes. . Ritchey-Chretien vs Classical Cassegrain. He has been a professor of physics astronomy at several colleges and universities. 4800, GSO 1.25" Mirror Diagonal . I purchased my 8-inch RCT (Image 1) from Astro-Tech solely for the purpose CCD imaging. A very good overview about the use of 8 inch Schmidt-Cassegrain fork equatorial telescopes, set up and operation, by Celestron International (in Acrobat Reader ".pdf" format). The author's cat is reading the fine print on the bottom of the dovetail plate. The latter is using the best of both designs. 36"dia . Achieving perfect alignment is no more difficult than with a Schmidt-Cassegrain. Found inside – Page 60makes both telescopes and binoculars , including a well - supported series of Schmidt - Cassegrain design catadioptric telescopes . ... Parks offers a pair of 6 - inch reflectors ( $ 799 ) and an 8 - inch reflector ( $ 1,099 ) . The 8" LX90 has an 8" diameter f/10 ACF optical system (focal length 2000mm) and Ultra-High Transmission Coatings (UHTC) for maximum image brightness and . Cave made cassegrain mirrors, but I didn't think they went down to a 6-inch size. Decades ago, this configuration was a favorite of many dedicated lunar and planetary observers. The telescope came with a tube cover, a GSO two speed focuser, one 2-inch extension ring, two 1-inch . Rs. Long focal length of 1836mm (f/12) "folded" into an optical tube just 20.5" long - so you won't need a giant mount! Despite its long focal length, the optical tube of this . Found inside – Page 146This two-way telescope is possible because both the Classical Cassegrain and Newtonian optical designs are based around parabolic primary mirrors. ... One look and you can see that Vixen's 8-inch f/9 GP VC200L Cassegrain is different. No competing Schmidt-Cassegrain Telescope can make those claims. Found inside – Page 10-14Both 1.2 - meter telescopes are classical Cassegrain optical systems , having parabolic primaries and hyperbolic secondaries . One telescope ( 829 ) has a back tocal distance of 29 inches , a relative aperture of f / 20 , and a focal ... instruments which are quite rare and retain their value. . [ Subject To Availability ], Suggested Accessories with this Telescope, The Moon Map Poster B/W chart unfold to 22"x26", 110 Messier Object Locator     A4 size front back colour print, Star Dial - Identifying Stars & Constellations, Desiccant Cap - Refillable desiccant cap to protect fine optics, Carry Bag for 8 inch Classical Cassegrain OTA . Rs. Rs. Dobsonian vs Cassegrain Differences. . In 1949, Cave had produced a telescope for his own use - a 121/2-inch, f/11.3 giant. The classic, 8-inch Schmidt-Cassegrain revolutionized amateur astronomy in the 1970s. Rs. Credit: Larry Carlino. . 2100, 9 mm Plossl Eyepiece 1.25" . . No competing Schmidt-Cassegrain Telescope can make those claims. Generally speaking, these are fast telescopes (focal ratio between 3 and 8 appro. Rs. As an example In the Meade line, the LX200 is an SCT and the ETX series is an MCT. claimed to be dielectric coatings. For smaller DSO's and planets, a long (er) focal length and a big (ger) aperture are a must. . Revelation Astro Crayford Dual Speed F. . . . . . It was superb. PlaneWave Instruments and RC Optical Instruments still make these large, research-grade RCTs. Meade AutoAlign then uses this info to . The biggest advantage is portability: an 8-inch f/10 SCT packs a lot of aperture and a 2000 mm (80") focal length into a tube about 430 mm (17") long. . The image captures the galaxy’s bright core and the bright oval ring surrounding the inner region of the galaxy. Found inside – Page 12Although we thought it would be the second - largest amateur telescope in California when we planned it ... classical Cassegrain that gives a 6 - inch - diameter field of good definition for photography with the f / 8 secondary . SCT's are not perfect at anything but they're pretty good at everything. I should note this image was taken prime focus without the 0.8x focal reducer/field flattener. . This works perfect for the RC8 flattening the field and reducing the focal ratio from f/8 to a faster f/6.4. Celestron Edge HD 8 review. The 8" LX90 has an 8" diameter f/10 ACF optical system (focal length 2000mm) and Ultra-High Transmission Coatings (UHTC) for maximum image brightness and . You can get a 5% discount at Tejraj - click here to get my affilialte code. The uncorrected focal length of the telescope is 1625mm. Meade LX200-ACF 8-inch Schmidt-Cassegrain The Meade LX200 range first appeared in 1992. mechanical properties. Rs 1650, GSO 40mm Camera adapter 2 inch . Since the mid 20th century, a majority of large . The image with both telescopes was crisp, well saturated with color and able to reveal delicate festoons in the now-yellowish Equatorial Zone. This article will feature a 12.5 inch Classical Cassegrain with parabolic primary and hyperbolic secondary Advantages and Disadvantages of the Cassegrain The advantage of the Cassegrain is that it allows for a long focus telescope in a relatively short tube. . Celestron’s Low Cost, Compact 70mm Travel Telescope Reviewed, Sky-Watcher’s 6-inch Dobsonian Telescope Reviewed, Unistellar eVscope 2 Smart Telescope Review, Askar Releases Its Largest Petzval Quintuplet Astrograph: FRA600, ZWO ASI2600MC Pro: A Premium One-Shot Color Camera Reviewed, QHYCCD Introduces Two Short-Wave Infrared Cameras, Chroma Narrowband Filters for Astrophotography in Light-Polluted Skies. . ♦ Aperture 8" - 203 mm. Found inside – Page 324... Coude spectrograph ; ( 2 ) installation of 12 x 15 - inch ruled grating in the 84 - inch telescope Coude ... telescopes have apertures of 36 and 24 inches , and two have 16 - inch apertures ; all have classical Cassegrain optics . GSO 8-inch Classical Cassegrain. Elevation about 1400' 10000 Skyline Blvd. I recently reviewed a Guan Sheng Optical (GSO) 8-inch classical Cassegrain telescope for Astronomy Technology Today. The option 8x 50mm CNC made Finder bracket could be fits with this item. . The image even captured the tiny edge-on spiral galaxy IC4277, magnitude 15.6. Sky-Watcher’s Heritage 150p is a collapsible 6” f/5 truss Dobsonian reflector telescope. . Finally, Image 6 displays a 160-minute exposure of M77, a 9th magnitude, barred-spiral galaxy in Cetus. Image 3 is the star cluster NGC884. . . The 8-inch optical tube assembly (OTA) came with a finderscope mounting shoe, one two-inch focuser extension ring, two one-inch focuser extension rings, a two-speed GSO focuser, a Losmandy-style dovetail plate, and a Vixen-style dovetail plate. Multiple stars, though somewhat cleaner in the refractor, were very pleasing in the GSO. Detailing design methods for a variety of lens forms, this book shows that fixed focus and zoom lenses can be optimized, starting from plane-parallel surfaces, in a brief time on a modern fast PC compared to traditional tools that require ... Page 1 of 2 - GSO 8 inch classical cassegrain - posted in Cats & Casses: Taken the plunge on this scope in the guise of astronz. Rs. Download the publication Celestron C-8 Telescope, the complete instruction manual which we include with the Celestar 8 and the Celestar 8 Deluxe telescopes. . The Dobsonian and Cassegrain are some of the most popular types of telescopes. The Cassegrain reflector telescopes use a combination of the primary concave . And if a 10" Cassegrain is a little too big for your needs, we also have GSO 8-inch classical Cassegrains and 6-inch classical Cassegrains in stock. In a world abundant with Schmidt-Cassegrainian telescopes (SCT), the GSO (Guan Sheng Optical of Taiwan) 8-inch offering (MSRP: $899) is throwback to the all-mirror classical Cassegrain design that uses a parabolic primary and hyperbolic secondary. However, even with a 40 percent or greater central. 8" f/12 Classical Cassegrain Telescope by GSO: Classical Cassegrain telescope with 8" aperture and focal ratio of f/12, ideal for visual observation and imaging of the Moon, planets, double stars, planetary nebulae, and other compact celestial objects; Folded optical design packs a focal length of 2436mm into an optical tube only 535mm long Also in the image is IC4278, a 17th magnitude elliptical galaxy. I would defer to the GSO 8-inch classical Cassegrain telescope for visual use.  However, for CCD imaging, the GSO 8-inch Ritchey–Chrétien is an ideal mid-sized instrument for CCD imaging. 1650, Carry Bag EXOS-II Stand . Found inside – Page 84B Sky watcher's guide to Telescopes PS puts it all into focus— objective to eyepiece— for those who want to bring the moon and the stars into the backyard By GREG STONE The 3'/2-inch Questar sets up in seconds, has first-rate optics, ... . A Ritchey-Chrétien telescope (RCT or simply RC) is a specialized variant of the Cassegrain telescope that has a hyperbolic primary mirror and a hyperbolic secondary mirror designed to eliminate off-axis optical errors ().The RCT has a wider field of view free of optical errors compared to a more traditional reflecting telescope configuration. Rs. Comparing RCTs to Schmidt-Cassegrains telescopes (SCTs), which usually have secondary mirror magnifications of 5x and overall focal ratios around f/10, the RCTs are also much faster. The Ring Nebula (M57) in Lyra is shown in Image 4. With a focal length of 1836mm, it's ideal for crisp and razor-sharp visual observation and imaging. f8, 24 ft FL , . And to make it easier for you to get the most extensive news, articles and reviews that are only available in the magazine pages of Astronomy Technology Today, we are offering a 1 year magazine subscription for only $6! . Rs 9300, GSO 45 Degree Erecting Image Diagonal . Parallax Instruments Product Number: PI370C. These claims tend to confuse the amateur astronomer into believing you must have 1/10 wave optics, when . . Orion SkyQuest XT10 Classic Dobsonian Telescope. . Optically, the telescope is excellent. . Rs. Direct comparison with a high-quality 6-inch ED refractor at magnifications ranging from 145x to 252x showed nearly identical detail on Jupiter. . The Dall-Kirkham Cassegrain with its F/20 focal ratio and smaller central obstruction is perhaps the ultimate high magnification visual planetary telescope. This is the perfect book for amateur astronomers who are about to invest in a new Schmidt-Cassegrain or Maksutov telescope, or for those who already have one and want to get the most out of it. Additionally, this telescope can capture 8-inch telescope images with one single snap. No competing Schmidt-Cassegrain Telescope can make those claims. Order it now. Rs.2100, GSO 2 inch Mirror diagonal . They were (are) research quality. LUNT 60mm Solar Telescope . . No competing Schmidt-Cassegrain Telescope can make those claims. . It weighs about 13 lbs . . Smaller Central Obstruction Of Just 33% Allow Much Better Contrast Than Similar Schmidt Cassegrain, 96% Reflectivity Dieletric Coated Aluminium, These Mirror Are Specially Coated To Provide Maximum (96%) Light Reflectivity To Get The Best Contrast Available For Image Or Visual Usage. The buy button has been clicked upon and one white TS-Optics 8" f/12 Cassegrain telescope 203/2436 mm OTA should be arriving via DPD by this weekend. A full 8-inch aperture is designed to provide you with the most beautiful view of the smallest celestial objects. . Celestron NexStar 8SE Schmidt-Cassegrain Telescope. Turn the Meade LX 90 ACF 8 inch Advanced Coma Free Telescope on and the built-in Sony GPS sensor immediately determines your precise date, time and location. Based on a folded optics Schmidt-Cassegrain design, its distinctive blue optical tubes and black, heavy-duty forks have become something of an icon. > images because of sheer size. . And I don't believe A. Jaegers manufactured cassegrain mirrors. Found inside – Page 216Telescopes come in several basic designs: refractor, reflector and Schmidt–Cassegrain. ... and least expensive type of instrument—and what I recommend—is a Dobsonian reflecting telescope with a 4.5- to 8-inch (115- to 200-mm) mirror. A telescope focuses a star as a round point of light. Found inside – Page 58This classical apochromat, corresponding to Zeiss-type B, not only possesses nearly ideal chromatic correction but is also ... Cemented three-lens apochromats of f 8 and faster (e.g., Starfire Triplet, APQ Fluorite of Zeiss) that can be ...

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