Televue 3.5 inch Long Extension Tube

Televue 3.5 inch Long Extension Tube Reviews

Other Picture

TeleVue 3.5" Extension X3C-0009

Visit Store Now !!

Detail Products

Detail Reviews

Sep 10, 2011 05:23:04

Televue BFO-0125 Bandmate OIII 1.25 inch Filter - BFO0125

Televue BFO-0125 Bandmate OIII 1.25 inch Filter - BFO0125 Reviews

Other Picture

Televue BFO-0125 Bandmate OIII 1.25 inch Filter - BFO0125 Feature

• This OIII filter particularly enhances planetary nebulae in larger telescopes
• Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images.
• Ion beam technology and optical glass produces low scatter in a hard stable coating to reduce changes due to temperature and humidity.
• Optical quality BK7 glass yields sharp star images even when filter is placed in front of diagonal.
• 100% quality control: Every single filter is checked optically and cosmetically to assure performance. Every filter is individually serialized

Bandmate filters yield bright, sharp and contrasty images - even in the optically sensitive position in front of the diagonal. Optical glass and red filtering allows for sharp and bright views of nebulae with embedded star clusters - such as the Lagoon Nebula (M8).

Visit Store Now !!

Detail Products

Detail Reviews

Aug 20, 2011 23:11:04

Televue Starbeam SCT Base w/ Flip Mirror

Televue Starbeam SCT Base w/ Flip Mirror Reviews

Other Picture

Starbeam's unique flip mirror feature provides comfort and flexibility for viewing straight through and 90°. Viewed straight through, you see the natural sky with a 10 arc-minute (1/3 Moon dia.) "red-star" showing your scope's position. When your scope is pointed high, flip the mirror into position for more comfortable viewing. The size, color and adjustable brightness of the "red-star" makes it easy to see against any twilight to dark sky background.With its 39mm aperture, the projected image is easily seen any distance behind Starbeam, whether 2 inches or 2 feet! The finely made glass lens acts as a beamsplitter to combine the natural sky background with the superimposed red pointing "star." The first lens surface acts as a collimating mirror so the "red-star" stays stationary against the sky background regardless of your eye position. A compensating curve is designed into the second lens surface to provide the normal sky background view and is multi-coated to eliminate double images.Elegant in design and form, Starbeam is custom machined completely from aluminum and then black anodized, even down to the "push-pull" thumb screws. No tools are required to align Starbeam with your telescope. This new Starbeam model has a dovetail bar and mounting bracket that fits the rear cell of any 8" or larger SCT. The bar and bracket are also sold separately so any Starbeam owner can adapt the uniquely accurate, large aperture

Visit Store Now !!

Detail Products

Detail Reviews

Jul 23, 2011 00:27:03

Televue 5x Powermate 1.25 inch (1-1/4 in.)

Televue 5x Powermate 1.25 inch (1-1/4 in.) Reviews

Other Picture

Televue 5x Powermate 1.25 inch (1-1/4 in.) Feature

• Latest Version, Accepets the T-Ring Adapter
• Vignetting, edge field aberrations and pupil movement - all introduced when using Barlows with long focal length eyepieces, are minimized.
• Telecentric operation (field rays leave parallel to optical axis, unlike Barlow lenses which diverge rays). This is ideal for Hydrogen-alpha filter use such as with Daystar models.
• High performance for image amplification, CCD or film (some of the finest Earth-based planetary imaging is being done with Powermates).
• Flexible for visual and imaging with all types of telescopes and eyepieces. Essentially Parfocal, and with nearly constant magnification regardless of image distance behind top surface (except 5x model which increases 1x for every 35mm of image distance increase).

Tele Vue Barlows: "An Optically Perfect Window " Properly designed Barlows do wonderful things. First, they amplify power while retaining the eyepiece's eye-relief. Second, they slow the telescope's f/#, which improves eyepiece sharpness. Third, the designer can introduce compensations for eyepiece aberrations. The 2.5X Powermate Barlow is a 4-element parfocal, compact amplifying lens system. POWERMATE consists of a negative achromatic doublet plus a positive "pupil-correcting" doublet. While it looks and functions like a Barlow, your eyepiece will operate with pupil locations where the designer intended, avoiding mismatch problems. POEWRMATE optimally mates its power to your eyepieces. No additional "interface lens" is needed, since POWERMATES have it built-in. In addition to full multi-coating, POWERMATE includes other Tele Vue special touches such as a safety undercut on the chrome barrell, and captive lock screws that can't fall out. Tele Vue's 100% QC program at f/4 insures that POWERMATE will add dramatic power (and NOTHING ELSE) to your favorite eyepieces. If, for example, you own a 22mm Panoptic, you'll have the power of an 8.8mm focal length eyepiece with the 2.5x POWERMATE. The POWERMATES are constructed to be parfocal with Tele Vue's 1-1/4" 90 degree diagonal (often used in Ranger telescopes) adding convenience not previously available with any Barlow. The 2.5X POWERMATE has no filter threads Dobsonian/Ne

Visit Store Now !!

Detail Products

• Celestron NexImage Solar System Imager
• Celestron Collimation Eyepiece 1.25"
• Televue T-ring 1.25 in. Adapter f/ PMT-2513 & PMT-5126 (Requires T-mount)
• Celestron Accessory Kit
• Televue 2x Barlow 1.25 inch (1-1/4 in.)

Detail Reviews

Jun 12, 2011 02:19:06

Televue 1.25 inch Erect Prism 45 Degree

Televue 1.25 inch Erect Prism 45 Degree Reviews

Other Picture

While star diagonals correct a refractor's inverted image, they don't correct the left-right orientation. For terrestrial viewing at moderate magnifications use the Erecting Prism to achieve a natural view.

Visit Store Now !!

Detail Products

Detail Reviews

May 22, 2011 03:04:04