141 results for "Takahashi telescope" between $100.00 and $20,000.00

Modified Four Element Double ED Petzval design eliminates astigmatism, coma, secondary spectrum, spherical aberration and field curvature. The Takahashi FSQ106ED F5 Astrograph Telescope provides 178mm of backfocus to accommodate demanding applications. Prime focus 88mm image circle covers 9.5° of sky and accepts new F3.6 focal reducer! The Takahashi FSQ106ED F5 Astrograph Telescope includes built-in camera angle adjuster capable of lifting up to 11 pounds. Included 4" rack and pinion focuser...

Dall-Kirkham Telescope combines refractor-like performance in a larger folded optic reflector design. The Takahashi Mewlon 210 at prime focus provides a focal length of 2415mm, focal ratio of f/11.5 and image circle of 18mm. Primary mirror diameter measures 220mm (f/2.9) with a secondary mirror amplification of 65mm (4X) and secondary obstruction of 0.32 (31%). The Takahashi Mewlon 210 measures 700 mm long, 244 mm in diameter and weighs 17.6 lbs. (8kg). It offers a limiting visual magnitude of...

Ortho-Apochromatic Triplet Lens incorporates an FPL-53 Extra-low Dispersion glass element sandwiched between crown glass to eliminate chromatic aberration. The Takahashi TSA-102S APO Refractor Telescope provides 816mm focal length at f/8 and can provide up to a 3.06 degree field at 16X. Superior light transmission and excellent contrast - all surfaces are fully anti- reflection multi-coated and the tube interior is knife-edge baffled. The Takahashi TSA-102S APO Refractor Telescope 2.7" rack and...

The Takahashi TOA-130F is the first of Takahashi's newest optical design: The Ortho-Apochromat. This 21st century innovation employs a newly designed triplet using special elements to produce the highest order of color correction. Orthoscopic means perfected visually and Apochromatic means you're free from those strange violet glows which often accompany bright stars or planets. Thanks to the ingenious design of layering an FPL-53 Extra-low Dispersion glass element between two extreme quality crown...

Hyperbolic Flat-Field Astrograph design offers up and amazingly fast effective focal ratio of f/2.8! The Takahashi Epsilon 180ED catadioptric extra low dispersion optics provide high quality images for visual observation and large field imaging needs. Wide, perfectly flat field supports traditional photographic formats as 24x36 (35mm), 6x6, 6x9 and works perfectly with mega pixel digital 35mm cameras and CCD imagers. The Takahashi Epsilon 180ED newly designed corrector provides incomparable contrast...

Uses a newly designed Extender-ED 1.5x to increase focal length for high power viewing. Focal length with Extender-ED 1.5X: 328mm. Designed from the beginning for digital imaging. Image circle with Extender-ED 1.5X: 44mm. Focal ratio with Extender-ED 1.5X: f/8. Metal back with Extender-ED 1.5X: 117.5. Highly portable for worldwide or remote site uses. Tube Length: 322mm [12.68??] w/lens shade collapsed. Total weight: 3.9kgs [8.58lbs].

The Stellarvue R50TAK Finderscope Rings are designed for Takahashi telescopes and mounts to the standard Takahashi base with two holes 28mm apart. Internal ring diameter is 2-11/16". Stellarvue R50TAK Dual Ring Finderscope Mount accommodates 50-60mm Stellarvue finderscopes or other finders with the appropriate diameter. Quick release dovetail base.

Dual action collimation screws, mirror tension adjustment and collimation marks make critical alignments fast and easy. The low profile Crayford rack-and-pinion focuser has a rotary system for framing and provides 56mm of backfocus from the end of the corrector. Extra-low dispersion two element corrector combined with hyperbolic primary mirror produces flat field images with no coma or chromatism. 180mm effective aperture provides a light grasp of 661x at a limiting visual magnitude of. 13.0...

The four element lens design creates a 44mm image circle and a super-wide 6.5 degree photographic field. This will allow your Takahashi FSQ-106 to perform like a super telephoto lens - capturing wildlife shots like never before and opening up astrophotography applications narrower fields can't image.

Optical System Fluorite Apochromat Triplet. Aperture 200mm. Focal Length 2000mm. Focal Ratio f/10.0. Light Grasp 816x. Resolution .58". Limiting Magnitude 13.3. Image Circle 65mm. Photo Field (w.reducer) 2 degree. Tube Diameter ?256mm. Length of Tube 2300mm (90.55in.). Weight 62.1kg (137lbs). Finder scope 11x70, FS-102.

Versatility is that word that best describes the FS-60Q modular telescope. Converts from an f/10 600mm focal length instrument to an f/5.9 354mm wide field instrument that can be used to image at f/6.2 using the dedicated flattener or to f/4.2 with the dedicated reducer. Both devices providing a 44mm image circle which will cover an APS size chip oe used at f/10 with a 44mm flat field 95% illuminated to narrow field imaging; or extended with the Extender-Q to960mm for lunar, nature of eclipse imaging...

Image Circle with Optional Reducer: 1.7" (44mm) - light intensity 60%. Image Circle with Optional Extender: 1.7" (44mm) - light intensity 60%. Focal Length with Optional Reducer: 15.2'" (385mm). Focal Length with Optional Extender: 33.5" (850mm). F Ratio with Optional Extender: 8. F Ratio with Optional Reducer: 3.6. Light Gathering Power: 229X, Limiting Mag is 11.9, Resolution: 1.09" (28mm). Effective Aperture: 4.2" (106mm) - Focal Length: 21" (530mm).

R.A. Slow Motion: Motor Driven. DEC Slow Motion: Motor Driven. Azimuth Adjustment: 30?. Elevation: 0-50? or 5-50?. Setting Circles: R.A> -10' increments, DEC, -2? increments. Tracking Accuracy: 5 arc seconds. Load Capacity: 35.2 lbs. (16kg). Gross Weight, including Counterweight: 56.2 lbs (25.5kg). Counterweights: 2 - 5kg. Polar Finder: Built-in with 5' setting accuracy, scale pattern effective til 2015 with quick reference dial for N/S. Motor Drive: Sidereal rate N/S switching. Slewing...

Optical Design: Ortho-Apochromatic Refractor. Aperture: 5.1" (130mm). Focal Ratio: f/7.7. Focal Length: 39.4" (1000mm). Optical Tube Dimensions: 7" (179mm) - with dew shield X 32" (812mm) - without adapters. Focuser Design: 4" Rack & Pinion. Mount Type: German Equatorial. Drive System: Motorized with GoTo Capabilities. Weight - OTA: 22 lbs. (10kg). Weight - Mount: 56.2 lbs. (25.5 kg) with counterweights. Counterweights: 2 - 7.7 lbs. (3.5 kg). Optical Coatings: Fully Multi-Coated.

Takahashi Tripod Pier Adapter for the EM-400 Mount.

Aperture: 120mm. Focal Length: 900mm. Focal Ratio: 7.5. Tube Length with Dew Shield: 990mm. Tube Diameter: 125mm. Diameter of Dew Shield: 713mm (28"). Resolution: 0.97. Limiting Magnitude: 12.1. Back Focus: 227.5mm (8.93"). Weight: 12.6 lbs. With TOA-35 Flattener: Focal Length: 882mm Focal Ratio: f/7.3. Optical Performance: 7 micron RMS-spot to 20mm off axis. Image Circle: 40mm. Image Field: 2.6" diameter With TOA-35 Reducer: Focal Length: 672mm Focal Ratio: f/5.6. Optical Performance...

90mm air-Spaced doublet offers true f/5.56 apochromatic refractor design. The Takahashi Sky 90 II incorporates precision manufactured laboratory flourite elements, combined with low dispersion glass. Vacuumed hardcoated on all surfaces and internal knife-edge baffling for maximum contrast. The Takahashi Sky 90 II provides a 5.1 degree field of view on the long axis of 35mm photos. Ultimately portable at only 7 pounds in weight and 13.8" in length. The Takahashi Sky 90 II includes 2" rack and...