Gregory-maksutov telescope design software

Maksutov s 1944 design was the firstpublished meniscus telescope design, and was published in the widelyread journal of the optical society of america. And you can still reach focus with devices like flip mirrors and off axis guiders. Atmos is a powerful program for telescope analysis and design. Telescope types and designs there are three basic types of optical telescopes refractor, newtonian reflector and catadioptric. Fully multicoated f12 rumak maksutov optics and interior baffles deliver high contrast views similar to a 5inch apochromatic refractor, at a fraction of the cost. Orion apex 127mm maksutovcassegrain telescope orion. The nexstar 127slt is the secondlargest in the slt family. What you call gregorian maksutov is gregory maksutov, after john gregory s 1957 designes. Mar 19, 2017 gregory maksutov 275 mm telescope made by jhon gregory.

Modas stands for modern optical design and analysis software. It allows you to easily and quickly change any of the design parameters of the telescope and to see the results. Suggestions for aspiring hobbyist electronics forums. This frame shows venus and the thin crescent moon framing comet 2pencke. Atmos now is a very powerful program with a userfriendly interface that allows the user to analyze, design and optimize centereduncentered optical systems.

As compared with a fullaperture maksutov corrector, there is a great saving in glass, abrasive, and labor by going to the subaperture corrector of these designs. John gregory published an article in the march, 1957 issue of sky and telescope describing his new design for a maksutov cassegrain telescope. All of these telescopes are designed to collect light and bring it to a focus point so that it can be magnified by an eyepiece, however each design does it in a different manner. Youll find a wide selection of truss and optical tube options as well as astrographs. Ive pitted charity against a c5 on several occasions, and the. Evolution of the maksutovcassegrain telescope by john f. A comprehensive manual for amateur astronomers harrie g. For folks used to observing m in a 6 or 8inch telescope, the great glob in a inch, especially from a dark site, was, to put it mildly, a revelation. Gregorian maksutov would have been one using concave secondary mirror. There is a notion that its optics has special properties, making it sort of exception in that its intra and extra focal pattern are not supposed to be identical, even when it is near perfectly corrected. The newtonian telescope design planner uses javascript to perform the mathematical calculations. Gregory 1927november 14, 2009 was an american optical engineer and a popularizer of amateur telescope making.

It ray traces a newtonian telescope design checking for vignetting, optimizes diagonal size, calculates baffle sizes and positions, and produces. It is limited only by the makers creativity and resourcefulness. Maksutovcassegrain telescope amateur telescope optics. For users of the ray optics module, comsol multiphysics version 5. Simulate light through the system and compute images and intensities at various locations in the design. Gregorymaksutov telescope the gregorymaksutov telescope is a simple catadioptric telescope comprising a spherical corrector lens and a spherical. Aug 10, 2006 because i wanted to design my own telescope. Whether used as a highly portable astronomical telescope or the ultimate terrestrial spotting scope this tube assembly will in my own experience equal or exceed any similar aperture on the market regardless of type, and blow. Jodas java optical design and analysis software written by ivan krastev. Oslo is a powerful optical design program with the scope. The extra degree of freedom that this provides over the gregory maksutov results in a far better design and stunning performance across the whole field. Keck telescope the keck telescope is a 10meterdiameter telescope with a ritcheychretien optical design.

The maksutov also called a mak is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the surfaces being nearly spherically symmetrical. This telescope design has a reputation for sharp, highcontrast views, ideal for planetary observation. Astronomy software, such as the free stellarium program, can you help plan nights of observation. It ray traces the telescope checking for vignetting, optimizes diagonal size, calculates baffle size and position and more. The primary objectives were to be anything but difficult to use while watching and observing the sky, and to maintain a strategic distance from missteps like catching with the wrong resolution and. This is the case with the ylena 150, a 6 f14 gregory maksutov design of unparalleled surface accuracy and smoothness. It supports the telescope s weight while also allowing you to rotate its. From 2000 on, the yearly pink separator in the table has a link to the telescope competition section of our convention web pages, where you can see photos and sometimes videos of most of the scopes, winners or not just click on the year characters. The same year that john gregory brought his 5inch mak to the. The rutten maksutov has a separately curved secondary which gives an additional degree of freedom for the optical design. Gregorymaksutov telescope 275 mm cn classifieds cloudy. Houghtoncassegrain allspherical and aspherical types. Here are possible a lot of configurations, like gregory maksutov cassegrain the socondary is an aluminized spot on the back side of the meniskus corrector, rumak maksutov cassegrain like gregory, but with separate secondary mirror, simak and sigler maksutov cassegrain.

Also, this provides a stable, nonmoving mount for a camera or other device. Design work began in september 1997, with the actual work on the optics beginning in december and being completed except for final testing in march 1998. At the time, lawrence braymer was already producing his famoustobe questar maksutovcassegrain, a design very similar to gregorys in order to avoid. Amateur telescope making atm is a hobby that combines the craftsmans hands, the artists eye, and the scavengers nose. Stellafane convention telescope competition winners. This design form is often referred to as a rumak or sigler maksutov. Telescope designer gave amateur astronomers a new look at the stars. Its optical design is said to be very similar to the limited series 10inch. Newt for the web newtweb for short is a newtonian telescope computer aided design program. Design work began in september 1997, with the actual work on the optics beginning in december and being completed except for. Introduce you to newtonian telescope characteristics. Revolutions in telescope design are driven by dreamers. In the 1960s, celestrons founder, tom johnson, created groundbreaking new telescopes never before seen on the consumer market.

A very fine telescope can be built from almost anything. The etx90 maksutovcassegrain offers terrific optical quality that is the envy of the telescope industry, the easy to use meade autostar computer handbox with over 30,000 object library, and a solid mount and tripod. The goal of the design is to make an affordable astrographic telescope with a large enough imaging plane to take advantage of the large format ccd cameras of today. Extraordinary telescope made by the renowned john gregory. The 127mm aperture gathers enough light to see our solar system and beyond. When you click on each link below, youll go to a page that explains what the software does, shows a sample screen, and links to the downloadable file. Both setting circles are illuminated and viewed through an eyepiece built into the north end of the polar axis. This allows to practice lucky imaging approach using software like registax and. Gregory 19272009, optical worker and creator of the gregorymaksutov telescope design jack gregory american football coach born c.

Thats the beauty of its maksutovcassegrain telescope optical design its so wonderfully portable. Accurate digitized astronomical data, planetarium software, smartphones, coma correctors, well corrected wide angle eyepieces, meniscus mirrors, 3d printing, digital cameras and image processing software represent the vanguard of the latest in telescope design. In 1957 john applied the concept of the maksutov meniscus camera to the cassegrain telescope, making possible the compact design and sharp, well corrected images of the questars, quantums and other maksutovs of todays commercial telescope industry now commonly refered to as the maksutov telescope, it was john that actually designed the first f23 system of this type. Summarize oppgtical design of a newtonian telescope.

Amateur telescope maker optical design and analysis software. Gregory later published his design for two f15 and f23 telescopes in a 1957 issue of sky and telescope. Maksutovcassegrain telescopes serve as an alternative to schmidtcassegrains and newtonians, and offer astronomers a large visual aperture, high contrast, and long focal length in a compact package. John gregory published an article in the march, 1957 issue of sky and telescope describing his new design for a maksutovcassegrain telescope. Optical design software for simulating systems of lenses, prisms, etc. Although known as allspherical design, maksutovcassegrain can also be made with aspheric surfaces. It boasts big 127mm 5diameter optics but in a telescope tube thats a fraction of the length just 14. Here are possible a lot of configurations, like gregory maksutovcassegrain the.

Index 318 magnitude gain, 5 maksutovdmitri, 82 maksutovcassegrain, 82 gregorymaksutov 82, meade, celestron and intesmicro, 83 rutten rumak, 83 talklevzovcassegrains, 84 vixen maksutov cassegrains, 83 vixen vc 200l, 84 maksutovnewtonian, 64, 66. These use aluminized spot on the rear of maksutov corrector, which makes the secondary convex. What you call gregorian maksutov is gregory maksutov, after john gregorys 1957 designes. Two versions of the planner have been developed one for netscape and one for internet explorer. The method is used to design the freeform surfaces of a telescope whose performance is verified in offtheshelf optical design software zemax. Bonus starry night special edition astronomy astronomy software software download with a 36,000object database, printable sky maps and enhanced images including 3d renderings of stars, exoplanets, and galaxies. An interesting aspect of the commercial maksutov cassegrain is the question of its star test. This telescope calculator takes the objective diameter, f ratio, focal length, eyepiece apparent field, and eyepiece focal length as required to calculate the estimated objective performance, telescope magnification, magnification per inch, true field, and exit pupil size. The meade usb to serial cable provides the capability of using the usb port on a personal computer to connect to a. Riccardi has considerable experience with telescope designing and glassworking. Maksutovcassegrain telescopes are very popular, especially in smaller apertures, due to their super portability and beautiful highcontrast views. Ackermann has drawn my attention to the fact that this design.

Discover the ritchey chretien telescopes you need at telescopes. Company seven meade instruments company history page. Celestrons proprietary skyalign procedure has you ready to. The rumakmaksutov design features a separate secondary rather than a silvered spot on the rear of the corrector as in the more common gregory maksutov. Skywatcher 127 mm 5 f1500 maksutov cassegrain telescope tube the skymax 127 is a compact and poweful telescope for planetary and deepsky observing, but it can also be used very well for daytime viewing and photography. Optical layout of a typical maksutovcassegrain telescope this section details the optical design and inherent aberrations of maksutovtype catadioptric telescopes.

The bright points correspond to the horns of the crescent as seen with an f11 90mm gregory maksutov scope at 66. Meet john gregory in 1957 john applied the concept of the maksutov meniscus camera to the cassegrain telescope, making possible the compact design and sharp, well corrected images of the questars, quantums and other maksutovs of todays commercial telescope industry. This software provides an efficient way to transfer, browse, modify and distribute digital media. Maksutovcassegrain axial aberrations telescope optics.

Bouwers of amsterdam, holland, in february of 1941 and dmitry maksutov of moscow, russia, in october of 1941 independently conceived the idea of replacing schmidts complexly shaped corrector. Pulsar goto controllers the natural evolution of pulsar1 is the pulsar2 goto controller. Orion 180mm maksutov cassegrain ota lowest prices opt. Optical layout of a typical maksutovcassegrain telescope. I am selling this family heirloom just for emergency reasons.

In the 1960s, celestron s founder, tom johnson, created groundbreaking new telescopes never before seen on the consumer market. He is credited with the design of a version of the maksutov telescope called the gregorymaksutov telescope. Skywatcher 127 mm 5 f1500 maksutovcassegrain telescope tube the skymax 127 is a compact and poweful telescope for planetary and deepsky observing, but it can also be used very well for daytime viewing and photography. Pulsar goto controllers telescope german and fork mounts. Your photo indicates one can see the secondary spot on the corrector, so if im interpreting the situation correctly it is a rutten designed gregory maksutov, likely. Aug 02, 2009 i am getting ready to buy my first serious telescope and have been researching as much as possible to find something that fits me best. The moving mirror design gives the telescope a large focusing range enough to accommodate virtually any combination of sensors, from cameras to ccd detectors to spectrographs. So, if i can see them with the naked eye, bearing in mind i knew they were there so it might be suggestion, im sure they could have been perceived in antiquity. The focus motor provides electronic focusing for celestron schmidtcassegrain sct, edgehd, and rasa telescope optical tubes. View saturns rings, jupiters cloud bands, and the moon in brilliant detail. A tripod is a threelegged support device for the telescope. From november 2009 gemini telescope design is offering this new version that retains all the key features of its predecessor but adds a host of new valuable functions making it especially suitable for remote control. If you seek more features, you could also purchase software separate from what accompanies the telescope.

It consists of a small concave mirror, a gas laser, a semitransparent flat mirror, a concave ellipsoidal mirror under test, and a register equipment. Exe of harrie rutten and martin venrooij, but this program is compiled executable file and cannot be changed. The cdk corrected dallkirkham telescope is based on a new optical design developed by dave rowe. Planewave instruments was founded in 2006 by richard hedrick and joseph haberman, two former telescope engineers at celestron. Jun 19, 2002 a simple laser interferometer is proposed. A maksutovcassegrain, also referred to as a makcass or more simply, a mak telescope, is a member of the catadioptric telescope family and uses both mirrors and lenses in its folded optical design. Oslo optics software for layout and optimization is a powerful optical design program with the scope needed to meet todays optical design requirements. It is a telescope design software of the most popular telescope systems used by the amateur astronomers and telescope makers, including spot diagrams, ray fans, wave aberrations, diffraction analysis, optical layout, optimization, tolerancing, mirror testing and many other atm tools. Starry night 8 astronomy telescope control software for.

It is principally intended for astronomy and astrophotography use. Telescope designer gave amateur astronomers a new look at. These big, gawky, but loveable telescopes will never win any design awards, but they did what they needed to do, turn a whole lotta boys n girls on to the beauties of the great out there. The pictured telescope is a masterpiece of the telescope makers art that john built and brought to the texas star party in 1984. Optical design software for optical systems comprised of light sources, lenses, apertures, prisms, imagers, photometers, etc.

Then theres the gregorymaksutov, which replaces the mcts secondary mirror with a reflective spot in the center of the aperture lens. Do maksutovcassegrain telescopes require collimation. My name is massimo riccardi i am an italian optical designer and optician. In 1957 john gregory, a designer for perkinelmer, developed a new meniscus design known as the maksutovcassegrain, based on maksutovs idea.

Its optical design is said to be very similar to the limited series 10inch astrophysics f14. The telescope uses a 3element design with a separate secondary mirror. These photos only hint at the forethought and clever design that went into this prime specimen. Simple laser interferometers for concave ellipsoidal mirror. Starry night pro plus 8 is our fully featured flagship program, tailored for the astronomer who wants the very best inclass astronomy software and telescope control experience.

Maksutov cassegrain telescopes top brands lowest prices. In the present age of personal computers and optical design software. Therefore the curvature of the secondary mirror is always the same as the curvature of the corrector lens. With the focus motor installed, you can bring celestial objects into sharp, precise focus using your telescope s hand controller or a computer instead of using the focuser knob. So i rewrote atmos in visual basic and added much more analysis routines and useful telescope design tools. Full text of sky and telescope 197412pdf internet archive.

Atmos optical design and analysis software is the creation of massimo riccardi, an italian advanced amateur telescope maker and designer. Commercial use of the design was explicitly reserved for perkinelmer. Later the schmidt corrector plate was applied to the cassegrain design and the schmidtcassegrain telescope was born. The rumak maksutov, named after its designer designer harry rutton, is a more. With 127 mm aperture, the telescope gathers over 60% more light than a refractor with 100 mm aperture. He gave complete design specifications for 6inch f15 and f23 telescopes. Fields initially containing calcd andor are bordered in red are always calculated and cannot be manually entered. The original maksutovcassegrain design of john gregory employed an. For a more basic overview of these designs please see the maksutovcassegrain page and the maksutovnewtonian page. Despite a large baffle around the aluminized secondary mirror spot on the correctors interior surfacethe etxes use the gregory maksutov designthat increases the size of the central obstruction, the little scopes, and especially the 125, exhibit outstanding contrast. The names come from 17th century french sculptor sieur cassegrain, 20th century estonian and russian astronomers bernhard schmidt and dmitry maksutov, and american optical engineer john gregory.

I had built a newtonian from someone elses design and i wanted to learn the details of design and come up with one more to my specific tastes, at the time. Software for optical design and analysis kens telescope online calculator. The gregory makcass suffers from both coma and astigmatism, limiting. Meades dsi camera control and basic image processing software.

While either of the two main types above can have aspherized surfaces, in the amateur telescopes arena it is usually the gregorystyle mct, and. In addition to classical lens design features, it combines advanced ray tracing, analysis, and optimization methods with a highspeed macro language to solve a wide variety of new problems. Many telescopes, even beginner models, ship with software to help aim the telescope. Modas stands for modern optical design and analysis software it is a telescope design software of the most popular telescope systems used by the amateur astronomers and telescope makers, including spot diagrams, ray fans, wave aberrations, diffraction analysis, optical layout, optimization, tolerancing, mirror testing and many other atm tools. Getting a product like the cdk into the hands of serious imagers and amateur astronomers has been a shared vision. Upon installation, please use serial number 783a36800007296416. Superb moderate and highpower optical performance in a remarkably compact telescope design. The maknewtonian design provides large aperture apochromatic performance with exceptional field correction in. Dozens of free or inexpensive computer programs can aid your observing or simply allow you to explore the sky, with options available for mac, pc, and unix.