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Topic: Cassegrain

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	Cassegrain Winery on the NSW Mid North Coast at Port Macquarie
		Cassegrain’s Cellar Door is open seven days a week, from 9am to 5pm, with a complete range of wines for tasting, along with a private tasting room for those wishing to learn more about wine in a formal and personalised environment.
		The Cassegrain Winery is the ideal setting for all occasions, from a romantic wedding to a casual picnic, featuring extensive grounds, a formal garden with picnic areas and boasting over 2000 stunning rose bushes lining the entrance to the winery.
		Cassegrain's Wine Club gives its members the opportunity to receive the new vintages before their release, as well as substantial discounts together with numerous other benefits and privileges.
	www.cassegrainwines.com.au (0 words)

	Laurent Cassegrain - Biocrawler (Site not responding. Last check: )
		Laurent Cassegrain was a Catholic priest born in the region of Chartres around 1629 and died at Chaudon (Eure-et-Loir) on August 31, 1693.
		Cassegrain Telescope: First developed in 1672, this type of reflector is a combination of a prime concave and a secondary convex mirror, both aligned axially.
		In a Cassegrain telescope, there is a hole in the primary mirror; light from the primary mirror is reflected by the secondary mirror through the hole in the primary to reach the eyepiece, placed behind the telescope.
	www.biocrawler.com /encyclopedia/Laurent_Cassegrain (819 words)

	Large Prism Mounting Minimizing Rotation in Cassegrain Instruments
		ESI is a multipurpose instrument currently being delivered by the Instrument Development Laboratory of Lick Observatory for use at the Cassegrain focus of the Keck II telescope.
		The different modes are selected as follows; Light from the Cassegrain image (Figure 1) at the slit plane is collimated by an off-axis segment of an ellipsoid.
		Next, the spectrograph was mounted in a cassegrain simulator, which allowed us to tilt it, thereby inducing the different gravity orientations the spectrograph would see at Keck.
	loen.ucolick.org /engineering/ESI/Papers/Paper_A/denverA_99_8_03.html (0 words)

	13: Virtual Telescope II: Cassegrain
		In fact, in many photographic applications, the eyepiece lens is eliminated and an image sensor (film or CCD) is placed at the focal point instead.
		My version of this design differs from a typical Cassegrain that one might purchase from a commercial builder of telescopes.
		In a commercial Cassegrain design (called a "Schmidt-Cassegrain"), a spherical primary mirror is used instead of parabolic, because spherical mirrors are much easier to figure, and the glass plate to the right is shaped to create the optical behavior that would have been obtained with a parabolic mirror.
	www.arachnoid.com /raytracing/telescope2.html (0 words)

	Schmidt Cassegrain Reflecting telescopes Newtonian dimensions aperture mounts
		Schmidt Cassegrain Reflecting telescopes Newtonian dimensions aperture mounts
		A Newtonian reflector telescope bounces the collected light from it's main mirror out the side of the tube via the secondary mirror to the awaiting eyepiece.
		The light travels up the tube once, whereas the Cassegrain, the light bounces back from the secondary mirror towards the main mirror and through a hole in it's center to the eyepiece behind it.
	www.telescopes-astronomy.com.au /telescopes056.htm (395 words)

	Parallax Instruments, Inc.
		Additional features such as mirror cooling fans, tube baffling systems, low profile baffled focusers, and of course high quality optics combine to produce stunning planetary and deep sky images.
		The Classical Cassegrain offers a very long focal length in a relatively compact tube.
		The Dall-Kirkham Cassegrain with its F/20 focal ratio and smaller central obstruction is perhaps the ultimate high magnification visual planetary telescope.
	www.parallaxinstruments.com (0 words)

	Orion StarMax 102mm Compact Maksukov Cassegrain Telescope
		This compact Maksutov Cassegrain is ideal for the more advanced home astronomer who wants a highly portable telescope that delivers sharp, high-power views of the night sky.
		A Maksutov Cassegrain telescope uses two mirrors and a front correcting lens to "fold" the light.
		The result is a long focal length telescope (ideal for high magnification) in an incredibly compact tube (only 11 inches long) that produces sharp, detailed images.
	www.hometrainingtools.com /catalog/earth-space-science/telescopes-accessories/p_as-t102max.html (381 words)

	* Cassegrain Telescope - (Astronomy): Definition
		Cassegrain telescopes are popular for planetary viewing, because they can offer high-power views in a significantly smaller size than an equivalent refractor.
		Maksutov's are in fact Cassegrain telescopes: In the case of a Maksutov the light enters the front of the telescope via a curved corrector plate or lens (curved towards the interior of the telescope) which directs the light onto the concave primary...
		The optics for Galileo's SSI, inherited from Voyager, consist of a Cassegrain telescope with a 176.5-mm aperture and a fixed focal ratio of f/8.5.
	en.mimi.hu /astronomy/cassegrain_telescope.html (522 words)

	Bambooweb: Cassegrain telescope
		Sieur Guillaume Cassegrain was a French sculptor who invented a form of reflecting telescope in 1672.
		In a Cassegrain telescope, there is a hole in the primary mirror.
		Cassegrain Telescope: First developed in 1672 by the French sculptor Sieur Guillaume Cassegrain (1625?1712), this type of reflector is a combination of a prime concave and a secondary convex mirror, both aligned axially.
	www.bambooweb.com /articles/c/a/Cassegrain_telescope.html (245 words)

	Instruments: Sandiford Cassegrain Echelle Spectrometer \| What Are Astronomers Doing?
		Light from the primary mirror is reflected by a secondary mirror to an instument attached to the telescope through a hole in the primary mirror.
		The Sandiford Cassegrain Echelle Spectrometer is an instrument often used on the 2.1-meter Otto Struve Telescope.
		The Sandiford Cassegrain Echelle Spectrometer, or CE for short, is mounted on the telescope at the Cassegrain focus of the telescope.
	www.mcdonaldobservatory.org /research/instruments/instrument.php?i_id=15 (429 words)

	The 8.2 m Unit Telescope (Site not responding. Last check: )
		The stellar light is collected by the primary mirror (M1), concentrated by the combination of the primary and the secondary mirror (M2) either directly to the Cassegrain focus located below the primary or to one of the two Nasmyth focii.
		When changing between Cassegrain and Nasmyth/coudé operation, the curvature of M1 must be changed (active optics) and the secondary mirror must be refocused.
		At the Nasmyth foci as well as below the main mirror (the Cassegrain focus) astronomical instruments are to be mounted.
	www.eso.org /vlt/unit-tel (523 words)

	OHL 1 m Cassegrain (Site not responding. Last check: )
		The 1 m Cassegrain is a versatile telescope used for astrometric, photometric and spectroscopic purposes.
		During 1999 and 2000 the efficiency and reliabilty of the telescope has been largely improved by the complete refurbishment of the telescope control system.
		HoLiCam can be used in the direct cassegrain focus (7' field of view) or in combination with a focal reducer (27' fied of view).
	www.astro.uni-bonn.de /~webstw/ohl/hl_t1m.html (97 words)

	Cassegrain Easy Guider for 7in - 9.25in SCTs - Biggiest Manufacturer of Astronomical Accessories Astronomy Accessories
		The all-in-one Lumicon Cassegrain Easy-Guider for 7 - 9.25" SCTs is one of the most powerful astrophotography accessories on the market today, greatly extending the photographic capabilities of your Schmidt-Cassegrain telescope.
		The Lumicon Cassegrain Easy-Guider also includes rotational adjustments, along with a large off-axis prism, both of which combine to simplify guide-star selection.
		Exposure times with the Lumicon Cassegrain Easy-Guider are thus 2 to 4 times shorter, and the image size is correspondingly reduced.
	www.lumicon.com /item_details.php?iid=LG1025&cid=53&in=Cassegrain+Easy+Guider+for+7in+-+9.25in+SCTs&hn= (237 words)

	Cassegrain Antenna System (Site not responding. Last check: )
		Cassegrain antenna permits a reduction in the axial dimensions of the antenna just as in optics and also permits greater flexibility in the design of the feed system.
		Cassegrain geometry allows placement of the RF plumbing behind the reflector which eliminates the need for long transmission lines.
		A high gain cassegrain reflector antenna in Ku-band has beer successfully developed for command transmit application for the missile programme.
	www.drdo.org /pub/techfocus/apr2000/Cassegrain%20antenna.htm (180 words)

	WINE BUSINESS Printer version
		Under the terms of the arrangement, Simon Gilbert Wines will provide contract winemaking and other services to Cassegrain Wines, to enable the two companies to benefit from available economies of scale in production, as well as from the potential synergies available from working together and sharing resources in administration, marketing, sales, distribution and purchasing.
		The company, which was established in 1985, produces premium wines from fruit sourced from the premium grape-growing regions of New South Wales, with a strong emphasis on fruit from Northern New South Wales and New England regions.
		Cassegrain Wines sells approximately 50,000 cases of premium wine annually, predominantly through the Australian market and through its own Cellar Door and wine club operation.
	www.winebusiness.com /html/PrinterVersion.cfm?dataId=41371 (248 words)

	Cassegrain Wines - Travel Downunder - Discover the real Australia
		Cassegrain's is a premium winery located at Port Macquarie on Australia's Holiday Coast.
		Also available for tasting is Cassae (a sensual experience) all of Cassegrain's fruit comes from local Hastings River vineyards.
		While at Cassegrain's enjoy lunch, morning or afternoon teas at Ca Marche Restaurant overlooking vineyards and beautiful rose gardens.
	www.traveldownunder.com.au /New_South_Wales/North_Coast/Cassegrain_Wines.asp (208 words)

	Definition: cassegrain antenna (Site not responding. Last check: )
		Cassegrain antenna: An antenna in which the feed radiator is mounted at or near the surface of a concave main reflector and is aimed at a convex secondary reflector slightly inside the focus of the main reflector.
		Note 1: Energy from the feed unit illuminates the secondary reflector, which reflects it back to the main reflector, which then forms the desired forward beam.
		Note 2: The Cassegrain antenna design is adapted from optical telescope technology and allows the feed radiator to be more easily supported.
	www.its.bldrdoc.gov /projects/devglossary/_cassegrain_antenna.html (102 words)

	Cassegrain und Ritchey-Chretien
		Wie auch beim Hypergraphen, können wir bei klassischen Cassegrains und Ritchey-Chretien Systemen verschiedene Tubusausführungen und Okularauszüge anbieten.
		Ein Cassegrain hat einen paraboloiden Primärspiegel und einen hyperbolischen Sekundärspiegel.
		Da das Cassegrain etwas preisgünstiger ist als das entsprechende RC, raten wir in fast allen Fällen zu einem Cassegrain, eventuell mit Korrektor.
	www.astrooptik.com /Komplettgeraete/Cassegrains.htm (506 words)

	Brainboost - Cassegrain splitter (Site not responding. Last check: )
		IC405 Closeup (aiming 2) in Halpha from Stinger 450 Classical Cassegrain and FLI IMG1024S Dream Machine with Dichroic Beam Splitter IC405 (second aiming) in Halpha from Stinger 450 Classical Cassegrain and FLI IMG1024S with Dichroic Beam Splitter and AO unit -.
		The other portion of the light from the beam splitter goes on to hit a fold mirror on the back of the Cassegrain secondary mirror.
		It then is reflected off the main fold mirror, the scan mirror, and then out to the target.
	www.brainboost.com /search.asp?Q=Cassegrain+splitter&lfmq=1 (84 words)

	Modified Cassegrain Telescopes - OPT Telescopes
		Features VISAC (Vixen Sixth-Order Aspheric Cassegrain) optical system which is free of coma, curvature of field, spherical and chromatic aberration.
		Even at the edge of the 35mm film format (larger CCD chips) stars are smaller than 15 micrometers, which means that this telescope does not limit the image quality when doing imaging with fine-quality CCD imagers.
		The Vixen VC200L features VISAC (Vixen Sixth-Order Aspheric Cassegrain) optical system which is free of coma, curvature of field, spherical and chromatic aberration.
	www.optcorp.com /productList.aspx?uid=1-599-1088 (1136 words)

	The Cassegrain acquisition and guiding (A&G) box
		At the rear of the INT primary mirror cell is the Cassegrain turntable which can be rotated by 365 degrees, and onto which the A&G unit is mounted.
		The Cassegrain A&G Unit of the INT has been designed primarily for use with the IDS and FOS-1.
		Nevertheless, the overall philosophy of the design has been to incorporate a range of facilities which would be required by most instruments operating at the Cassegrain focus.
	www.ing.iac.es:8080 /Astronomy/observing/manuals/html_manuals/int_instr/ids_ccd/section2.6.2.html (754 words)

	Takahashi - CN-212 - 8.35" Cassegrain/Corrected Newtonian OTA - Model Number: TK-TNK2120 - $4,499.00
		The idea of combining the advantages of Cassegrain and Newtonian configurations in one instrument has been around for a long time but with very few examples commercially available.
		Thus it was not so much a novelty of telescope optics, but rather the result of a long held need for the ideal all-round telescope for the amateur that gave birth to the Takahashi CN-212.
		Focal Ratio: f/12.4 in Cassegrain config, f/3.9 in Newtonian config
	www.optcorp.com /product.aspx?pid=1-599-84-6267 (305 words)

	Document: 2.3m ARISTARCHOS Telescope Factory Integration
		The telescope tube is equipped with dummy- loads for the M2 and the AGU for testing.
		Assembly of the Cassegrain Rotator with the cable wrap.
		The acquisition and guiding system is located at the Cassegrain focus and includes the Science fold mirror to guide the light to one of the 4 instrument ports and the two probe arms for automatic guiding.
	www.zeiss.com /C12567BC00336A61/InhaltWWWIntern/EDB56FF69FF6FF9D41256A7100566923 (403 words)

	Books - Cassegrain
		Joseph S Miller, "The CCD cassegrain spectrograph at the Shane reflector (Lick Observatory technical reports)".
		G Lund, "OPTOPUS : multiple object spectroscopy at the Cassegrain focus of the 3.6M telescope (ESO operating manual)".
		Akira Ishimaru, "Double-spherical Cassegrain reflector with a single displaced feed (Technical report)".
	www.argospress.com /Resources/CommunicationsSystems/books-casseg.htm (466 words)

	VLT/Instrumentation Interfaces
		The interfaces between the VLT Unit Telescopes and the scientific instruments to be operated at the VLT Cassegrain, Nasmyth and coudé foci are well defined.
		Comprehensive documents exist which give all necessary details of these interfaces as well as other requirements with which the instruments and their control systems must comply.
		Requirements and recommendations specific for visitor instruments are described in Requirements for visitor instruments at UT Cassegrain foci (ps.gz, 450 kB, without drawings).
	www.eso.org /instruments/interfaces/index.html (460 words)

	Inventors and Inventions: C - EnchantedLearning.com
		A second mirror reflects the light through a gap in the primary mirror, allowing the eyepiece or camera to be mounted at the back end of the tube.
		The Cassegrain reflecting telescope was developed in 1672 by the French sculptor Sieur Guillaume Cassegrain.
		A correcting plate (a lens) was added in 1930 by the Estonian astronomer and lens-maker Bernard Schmidt (1879-1935), creating the Schmidt-Cassegrain telescope which minimized the spherical aberration of the Cassegrain telescope.
	www.enchantedlearning.com /inventors/indexc.shtml (3061 words)

	Amazon.com: cassegrain
		No one has created a list or guide tagged "cassegrain" yet.
		90mm cassegrain telescope dob eq fermat good value maksutov maksutov telescope maksutov-cassegrain orion quality schmidt science scientific instrument telescope xt8
		View or change your orders in Your Account.
	www.amazon.com /tag/cassegrain (0 words)

	Re: Cassegrain telescope's - Astronomy.com Forums
		I own a telescope right now its a Tasco 60mm 700mm department store(But the store i got it from is great its called sports authority and it doesent sell crap) Refractor.
		In the near future when i learn the night sky better and have no problem finding constalations i would like to get a Cassegrain telescope becaouse its small all porpuse and has the best of both worlds(Reflector and Refractor) but mainly because it is small and compact.
		Eventually I plan to purchase a 10" or 12" Cassegrain with astrophotography and research in mind.
	www.astronomy.com /ASY/CS/forums/310334/ShowPost.aspx (738 words)

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