TAL-200K-8.5 | $ 2,049 | Availability: Out of stock Delivery: Shipping cost is not included in the price of the telescope. Shipping cost is calculated separately and depends on country and carrier. In box: NPZ TAL-200K-8.5 Klevtsov`s Catadioptric OTA Focuser Crayford 1.25" Eyepieces 1.25" (f=10, 25mm) Finder 8x-50 Barlow Lens 2x Original manual English manual Additional Items: |
A new 200mm catadioptric telescope developed on the basis of Klevtsov’s original design is a perfect device for advanced amateur astronomers! It allows observing celestial objects with high resolution and pellucid capacity up to 13.5 star magnitude and making wonderful photos!
The Telescope is equipped with a 50mm finderscope of 8x and 7° field of view, two Plossl eyepieces (25mm and 10mm focal length), 2x Barlow lens.
For easy observation of celestial objects near by zenith the optical axis of the tube is turned by 90° with the help of a diagonal mirror situated in front of the eyepiece. Telescope has a multi-coated optics.
Klevtsov’s optical design is covered by a patent of the Russian Federation and described in literature. It can be compared with Maksutov-Cassegrain or Schmidt-Cassegrain systems, but has some very important peculiarities. That is a combination of corrector lens of small diameter and Mangin lens as a basis for a second mirror to prevent permanent aberrations of the primary spherical mirror.
The system is well adjusted, but in case of necessity you can use the adjustment screws of the primary mirror. Telescope TAL-200K is easily and quickly prepared for work – its open tube gets the temperature of environment very soon.
SPECIFICATIONS |
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Aperture, mm | 200 | |
Focal length, mm | 2000 | |
Focal ratio | 1:10 | |
Resolving power | 0.6" | |
Limiting visual magnitude | 13.4m | |
Magnification, min | 68x | |
Magnification, max | 340x | |
Optical scheme | Klevtsov | |
Angular photographic field | 40' (23.3mm) | |
Angular visual field, max | 31' | |
Angular visual field, min | 6.3' | |
Central obstruction area, % | 12 | |
Length of tube, mm | 550 |
Weight of the tube, kg | 12 |