With its cassegrain range reflectors, based on dall kirkham optical design, takahashi acted as a pioneer, and made schmidtcassegrain. Dallkirkham telescopes expert service unbeatable prices. Orion optics uk telescopes type of build dallkirkham. Accordingly, the dall kirkham telescope would be the ultimate telescope, the photo machine for astrophotography with the best picture quality, the highest available field and the best star images. Dall kirkham telescopes, or dks, are a type of cassegrain reflector with. The mewlon series comes in three objective diameters. On smaller telescopes, and camera lenses, the secondary is often mounted on an optically flat, optically clear glass plate that closes the telescope tube. Net reflector is a paid development application that is compatible with windowsbased computers. Before you start using the equipment it is important to know the main control elements. Ritchey chretien and dall kirkham telescopes from 6inch to 32inch the comafree performance of a true ritchey chretien telescope is the best base for astrophotography.
Planewave instruments was founded in 2006 by richard hedrick and joseph haberman, two former telescope engineers at celestron. A ritcheychretien, by contrast, might have an aspherization constant of 1. Astronomical observatory, any structure containing telescopes and auxiliary instruments with which to observe celestial objects. Ive made the optics to a number of reflector telescopes over the past 35 plus years. This is a monthly newsletter with software store information, offers and deals. Planewave 20 cdk corrected dallkirkham carbon fiber. The freeware comes with about 100 sample design files which you can open and investigate. We are your source for astronomy telescopes, eyepieces, astroimaging cameras, and more. Optical tubes without mount telescopes by type telescopes. Developed by planewave, the cdk corrected dallkirkham is a revolutionary new telescope optical system that was designed to excel at imaging on large format ccd cameras while remaining an excellent instrument for visual use. The takahashi mewlon series of dallkirkham telescopes by takahashi combines refractorlike performance in a larger folded optic reflector design. Ingalls eventually published an article that mentioned the design, calling it the dallkirkham, and the name stuck. I have owned, made and acquired various instruments over time. Dallkirkham vs classical cassegrain posted in reflectors.
History invented by master optician horace dall in 1928. Astronomical observatories in africa space in africa. The cdk telescope design provides excellent imaging with large format ccd cameras while remaining superb for visual use. Can anyone explain the difference in optical performance between these two designs. The planewave cdk optical design is the innovative solution for unsurpassed astroimaging quality at an affordable price. This is the most popular design in the world of professional reflector telescopes. With its cassegrain range reflectors, based on dallkirkham optical design, takahashi acted as a pioneer, and made schmidtcassegrain. Takahashi mewlon 300crs corrected dall kirkham telescope ota. Sesto senso 2 the highly accurate, advanced, vibration free, robotic focusing motor for your telescope. Halpha enhanced lrgb image of the horsehead nebula in. A classical cassegrain telescope has a parabolic primary mirror and a hyperboloidal secondary mirror.
The advantage of the dall kirkham lies in that the spherical secondary is fundamentally easier to accurately construct. Corrected dallkirkham cassegrain riccardihonders astrograph. It is equipped with a set of astrodon astrophotography filters as well as sloan photometry filters and its therefore an excellent choice for both scientific applications and. Newtonian reflector telescopes at a telescope shop. Halpha enhanced lrgb image of the horsehead nebula in orion. The cdk24 comes with fused silica optics, has a dual truss design with 3 cooling fans for the back of the primary mirror and 4 fans for the front surface of the primary mirror. Optical configurations for astrophotography imaging the sky 2012 intel hf3 auditorium, hillsboro, or may 56, 2012 richard berry. Also check out for more windows information and forum for windows.
Includes a 2 reflector mirror and a fine adjustment stage. Officina stellare dallkirkham dk 7004900 ridk sga ota 76,560. The dall kirkham has a elliptic primary mirror and a spherical secondary mirror. Typically, a dallkirkham might have an aspherization constant somewhere in the area of. Planewave cdk corrected dall kirkham reflector 24 aperture. The purpose of the design is to provide a telescope that will excel at imaging with large format ccd cameras while remaining superb for visual use. Newtonian reflector w coma corrector 250mm aperture. Below you can download modas ng a freeware version limited up to five optical surfaces, over this number it will work in demo modus. Apogee aspen cg16m ccd camera binned 2 x 2 2048 x 2048 pixels. This design puts the focal point at a convenient location behind the primary mirror and the convex.
Ingalls eventually published an article that mentioned the design, calling it the dall kirkham, and the name stuck. This category reflecting telescopes contains reflecting. The advantage of the dallkirkham lies in that the spherical secondary is fundamentally easier to accurately construct. This arrangement corrects spherical aberration at the expense of significantly increased coma. The dall kirkham, for example, is a non classical cassegrain in which the secondary is spherical, and the primary is elliptical. Orion optics uk telescopes type of build dallkirkham astroshop. Dall kirkham this is a simplified cassegrain design the uses a ellipsoidal primary mirror and a spherical secondary mirror. Omegon pro ritchey chretien 154 operating manual pdf download. Dallkirkham this is a simplified cassegrain design the uses a ellipsoidal primary mirror and a spherical secondary mirror. The dallkirkham has a elliptic primary mirror and a spherical secondary mirror. Takahashi mewlon 300crs corrected dall kirkham telescope ota the largest in the corrected dallkirkhams made by takahashi is the mewlon300crs transforming the m300 into a corrected flatfield instrument is made possible with an internal 3element.
The classic dallkirkham design is not well corrected for offaxis coma, and the overall speed of the optical system is fairly slow at f15 or slower. Planewave instruments is committed to providing observatoryclass products for serious astronomers at an unprecedented value. Non classical cassegrain arrangements bear the names of the designers who discovered them. Advanced ct laser collimator for cassegrain telescope. These dallkirkham telescopes offer an optical quality unmatched by most modern scopes. In contrast to other variants, like pressmanncharmichel, dall kirkham or the classical cassegrain, the ritcheychretien reflector shows you a completely comafree field full of round stars even without an additional corrector. Show dall kirkham telescopes, takahashi dall kirkham telescopes, and takahashi mewlon dall kirkham telescopes. The design was first presented around 1930 and was the subject of correspondence between oregon amateur allan kirkham and albert g. This is a weekly newsletter with download news, updates and other information.
The corrected dallkirkham cdk the cassegrain reflector is a twomirror telescope design invented by laurent cassegrain in 1672. Observatories can be classified on the basis of the part of the electromagnetic spectrum in which they are designed to observe. This is what most people have used for a long time to store their information in. The classic dall kirkham design is not well corrected for offaxis coma, and the overall speed of the optical system is fairly slow at f15 or slower. Takahashi mewlon 300crs corrected dall kirkham telescope. Accordingly, the dall kirkham telescope would be the ultimate telescope, the photo machine for astrophotography with the best picture quality, the. Collimate your cassegrain telescope without using a star indoor or outdoor day or night focus stays at final view setting within focal distance from your telescope oneman operation. Planewave instruments technologies optical, mechanical. Downloads below you can download modas ng a freeware version limited up to five optical surfaces, over this number it will work in demo modus.
A reflecting telescope also called a reflector is a telescope that uses a single or a combination of curved mirrors that reflect light and form an image. Apr 28, 2018 download a highquality map of the moon. Takahashi mewlon 300crs corrected dall kirkham telescope ota the largest in the corrected dall kirkhams made by takahashi is the mewlon300crs transforming the m300 into a corrected flatfield instrument is made possible with an internal 3element. Browse an extensive selection of astronomy equipment at. This revolutionary design has set the standard in folded optic systems. Officina stellare dallkirkham dk 8005600 ridk sga ota. May 04, 2017 download a highquality map of the moon. In contrast to other variants, like pressmanncharmichel, dallkirkham or the classical cassegrain, the ritcheychretien reflector shows you a completely comafree field full of round stars even without an additional corrector. Horace dall is the coinventor of the dallkirkham cassegrain telescope. For all interested atms now is available jodas freeware.
Media in category reflecting telescopes the following 200 files are in this category, out of 265 total. The reflecting telescope was invented in the 17th century, by isaac newton, as an alternative to the refracting telescope which, at that time, was a design that suffered from severe chromatic aberration. It seems to me that these f20 scopes might be the ultimate in planetary scopes. With your registration account, you can use data, manuals and software downloads of our products we recommend our customers to register their information to panasonic automation controls web site in order for us to deliver alerting message in case we make corrections to documents they downloaded in the past. Thank you for purchasing mewlon300 dallkirkham cassegrain telescope. Planewave 20 cdk corrected dall kirkham carbon fiber truss telescope. Below is a list of telescope across africa optical telescope salt the southern african.
Show dallkirkham telescopes, takahashi dallkirkham telescopes, and takahashi mewlon dallkirkham telescopes. With this program you can design and analyze one mirror newtonian and classical two cassegrain, gregorian, dall kirkham, pressmanncamichel, ritcheychretien, one mirror catadioptric sistems houghton, schmidt and maksutov cameras, two mirror catadioptric systems houghton, schmidt and maksutov cassegrain, doublets and. Ritchey chretien and dall kirkham telescopes from 6inch to. Reflector proves itself as a benchmark for reverse engineering code by dealing with assemblies made out of code compilationsnet reflector has a free trial available for download.
The corrected dallkirkham far exceeds the offaxis performance of most commercial. Corrected, optimized, modified, opt has all the dk designs you need. Getting a product like the cdk into the hands of serious imagers and amateur astronomers has been a shared vision of hedrick and haberman for many years. One memory channel is created for each repeater in the specified area. Orion optics uk dallkirkham dk 4002720 odk16 ota 9,800. This data is from the african astronomical society.
Planewave 20 cdk corrected dallkirkham carbon fiber truss telescope. Most of the homemade telescopes were given away or sold for a very reasonable cost. The precision optical surfaces of the mewlon series is at least. You have dreamed of a reflector with exceptional and powerful optics, with a generous diameter and with the guarantee of an incredible contrast. Dallkirkham vs classical cassegrain reflectors cloudy. Planewave 20 cdk corrected dallkirkham carbon fiber truss. The cassegrain reflector is a combination of a primary concave mirror and a secondary convex mirror, often used in optical telescopes and radio antennas, the main characteristic being that the optical path folds back onto itself, relative to the optical systems primary mirror entrance aperture. Truss rc ultimate astroimaging telescope package 2 hours ago tsoptics 8. Detection of transits of extrasolar giant planets with.
It is free of coma and spherical aberration at a nearly flat focal plane if the primary and secondary curvature are properly figured, making it well suited for wide field and photographic observations. The memory list section provides a download for the basic memory operation. Introducing the planewave instruments cdk24, a 24 inch 0. Reflector 2 uses the builtin airplay functionality of ios to mirror your ios device on a big screen or tablet without wires or complicated setups.
The purpose of the design is to provide a telescope that will excel at imaging with large format ccd cameras while remainin. The modas ng freeware will introduce you to the user interface, and analysis features of the program. With this program you can design and analyze one mirror newtonian and classical two cassegrain, gregorian, dallkirkham, pressmanncamichel, ritcheychretien, one mirror catadioptric sistems houghton, schmidt and maksutov cameras, two mirror catadioptric systems houghton, schmidt and maksutov cassegrain, doublets and. Also dall kirkham telescopes are good for astrophotography. The repeater list has evolved over time, so its use has changed from the ic91 to the id31. Omegon pro ritchey chretien 154 operating manual pdf. Often you read about dall kirkham telescopes not always accurate and correct statements. Connect it to the usb port of your eagle or windows computer to electronically control focus while still allowing you to manually move your focuser by hand if needed. Typically, a dall kirkham might have an aspherization constant somewhere in the area of. Collimate your cassegrain telescope without using a star indoor or outdoor. The corrected dall kirkham far exceeds the offaxis performance of most commercial. The mewlon300 has been designed to be used lor high magnification tunar and planetary observation and deep sky imaging in order to use the mewlon300 to the limit of its capabililles, please read this instruction manual carefully alld understand ittholoughly before.