Telescope Accessories: Televue

Showing posts with label Televue. Show all posts

Sunday, September 11, 2011

Televue Telepod Head Only Reviews

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For camera tripods, the Tele-Pod head has a built-in azimuth bearing, it can be used on any camera tripod having 1/4-20 or 3/8-16 screws.

Saturday, August 6, 2011

Televue TLB-0375 0.375 Inch /9.5mm Spacer

Televue TLB-0375 0.375 Inch /9.5mm Spacer Reviews

Threaded coupling provides the necessary distance for proper spacing of field lenses to chip. Required spacers will vary depending on camera specifications. Black anodized aluminum with anti-reflection threads for maximum contrast.

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Aug 06, 2011 11:39:04

Friday, July 15, 2011

Televue 26mm Nagler Type 5 2 inch Eyepiece

Televue 26mm Nagler Type 5 2 inch Eyepiece Reviews

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This is a somewhat smaller, lighter and more powerful version of the celebrated 31 Nagler Type 5. It weighs about 1.6 lbs and has a field stop diameter of 35mm.

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Jul 16, 2011 05:51:04

Wednesday, July 13, 2011

Televue TLC-0500 0.500 Inch /12.7mm Spacer

Televue TLC-0500 0.500 Inch /12.7mm Spacer Reviews

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Jul 13, 2011 13:59:03

Monday, June 6, 2011

Televue NPR-1073 0.8x Reducer For NP and NPI Series Telescopes

Televue NPR-1073 0.8x Reducer For NP and NPI Series Telescopes Reviews

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TeleVue Reducer for NP Telescopes NPR-1073 has the optical property of decreasing the effective focal length of the telescope. Reduced focal length results in wider-field and faster imaging time on nebulae and galaxies. Tele Vue 0.8x Reducer can be used for all Tele Vue Petzval telescopes such as TeleVue-NP101 Telescope (NPC-4054), Tele Vue Imaging System Scope NP127is (NPI-5053), and Tele Vue NP-101is Imaging System Scope (NPI-4055). The 0.8X Reducer from Televue is optimized for 55mm back focal length typical of SLR camera body that accepts T Rings.To use Tele Vue Reducer 0.8x for scopes with 2" focusers (such as the Televue NP-101) you will need to attach optional adapter Tele Vue Imaging System Noisepiece for 2" Focuser (RAD-1074) to the front of the Reducer to connect to your scope’s 2" focuser drawtube. For Tele Vue NP101is or NP 127is scopes that to achieve maximum field illumination and focus you'll need to use Televue Extension Tubes (TLA-0250, TLB-0375, TLC-0500, TLD-1000) in conjunction with Tele Vue 0.8 Reducer.Optimum performance is obtained with the NP scope models and cameras having APS size format (approximately 30mm diagonal). In all cases, the field and speed increases by 25%.Features of Tele Vue Reducer 0.8X:Can be used for all Tele Vue Petzval scopes such as TeleVue-NP101 Telescope and Tele Vue Imaging Systems NP127is, NP-101isFits Televue NP-101 with the addition of the optional adapter Tele Vue Noisepiece for 2" Focuser RAD-1074Optimized for 55mm back focal lengthPackage Contents:Televue Reducer 0.8X for NP Telescopes

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Jun 06, 2011 12:24:03

Monday, May 9, 2011

TeleVue Nagler Telescope Eyepieces - TVU034-5

TeleVue Nagler Telescope Eyepieces - TVU034-5 Reviews

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Take a "spacewalk" across the widest sharpest apparent field...Concept: You may know there's a long history of naming eyepieces after their designers: Kellner Erfle and Plossl to name a few. In the late 70's I designed an eyepiece sufficiently radical that I dared attach my name to it. Even today I must admit a little discomfort when talking about "Nagler" eyepieces.With "Naglers" my aim is to approach the wide angle perspective of naked eye vision while maintaining the highest degree of sharpness contrast and viewing comfort. The goal is to allow the telescope to virtually "disappear " leaving the impact of "spacewalk" viewing. -Al NaglerFollowing are excerpts from the book The Backyard Astronomer by Dickenson & Dyer: "Al Nagler of Tele Vue caused a sensation when he introduced the Nagler in 1982. The Nagler's success can be attributed to two important innovations: an extremely wide apparent field of 82 degrees with outstanding sharpness and exceptionally comfortable eye relief for eyepieces of very short focal length...He designed his melding of eyepiece and Barlow to operate as a single unit; that is the aberrations of one cancel out the aberrations of the other producing exquisitely sharp images edge to edge over an unprecedentedly wide field of view. Nagler's background of optical-systems design for visual flight simulators and his interest in amateur astronomy created the perfect match for this breakthrough."Compare a penny to a half dollar to see the relative size between a 50 degree and 82 degree apparent field - almost 3 times the area difference! And while others boast of impressive apparent field sizes Tele Vue's philosophy of "showing no field unless it's fine" stresses full field image quality as the ingredient for impressive views. Blackened lens edges anti-reflection threads and rubber eyeguards deliver maximum contrast. Adapter skirts for 2" focusers on larger 1.25" models (12mm Nagler Type 4 and 22mm Panoptic) and rubber grip rings are additional

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May 09, 2011 16:36:03

Wednesday, May 4, 2011

TeleVue ETHOS Telescope Eyepieces - TVU098-1

TeleVue ETHOS Telescope Eyepieces - TVU098-1 Reviews

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Tele Vue is known for its in-house eyepiece and telescope designs by Al Nagler; our latest eyepiece brings new meaning to the term in-house. The concept for this eyepiece was first proposed by Tele Vue President David Nagler with performance parameters giving it the fundamental characteristics (the ethos) of a Tele Vue eyepiece: high contrast comfortable eye relief and full field sharpness. Control of astigmatism field curvature lateral color angular magnification distortion correction and low pupil sensitivity for daytime use were specified criteria.Following Tele Vue s philosophy of pushing the state of the art long-time Tele Vue employee and optical design protï¿½ gï¿½ Paul Dellechiaie took up the challenge and designed the basic eyepiece form. Under Al s guidance Paul tweaked his design to fulfill the original goals. While sharpness is inherent to the optical design contrast is maximized through the intelligent use of flat finished baffles and ultra low reflectance high efficiency coatings tuned to the composition of each element. At the 2007 Northeast Astronomy Forum Tele Vue once again broadened the amateur astronomer's perspective on the universe and introduced a new observing experience; 100 of pure Tele Vue quality. With a 13mm focal length evoking the original Nagler revolution the field area of this new eyepiece is more than 50% larger than an 82 field. The Tele Vue Ethos is essentially multiple eyepieces delivering the true field size of a longer focal length narrower apparent field eyepiece with the benefits of higher power and darker sky background.

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May 05, 2011 01:29:04

Monday, April 18, 2011

Televue ETH210 21mm Ethos 2-in Eyepiece With 100 Degree Field Of View

Televue ETH210 21mm Ethos 2-in Eyepiece With 100 Degree Field Of View Reviews

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Televue ETH210 21mm Ethos 2-in Eyepiece With 100 Degree Field Of View Feature

Televue ETH210 21mm Ethos 2-in Eyepiece With 100 Degree Field Of View.

The TeleVue 21 mm Ethos Eyepiece ETH-21.0 transform your passage through the Milky Way with the 21mm's nexus of contrast, power and field. Larger deep sky objects and rich star fields are its natural playground. Looking on-axis your field-of-vision is filled with 100° of stars. This scope accessory from Tele Vue provides sharpness and richer contrast. This Tele Vue telescope accessory features the maximum true field of view and has no significant vignetting at the edge of the field. Also TeleVue 21-mm Telescope Accessory is parfocal with the 31mm Nagler Type 5 (EN5-31.0) by Tele Vue. Ethos 21mm EyePiece accepts Dioptrx Astigmatism Correction Telescope Lenses, that gives you the ability to compensate for your own eyesight astigmatism with a superb multi-coated lens providing your exact correction, rotation orientation and centration over the eyepiece.