TAL-250K | $ 3,049 | 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-250K Klevtsov`s Catadioptric OTA Focuser Crayford 1.25", 2" Eyepieces 1.25" (f=10, 25mm) Finder 8x-50 Barlow Lens 2x Original manual English manual Additional Items: Super Wide Angle Eyepieces 65° |
A new 250mm telescope to be developed on the basis of Klevzov's original optical system is a perfect device for learned amateur astronomer. It provides a high resolution of observed celestial objects having a pellucid capacity up to 14m and to allow making a photography.
SPECIFICATIONS |
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Aperture, mm | 250 | |
Focal length, mm | 2130 | |
Focal ratio | 1:8.5 | |
Resolving power | 0.5" | |
Limiting visual magnitude | 14m | |
Magnification, min | 85x | |
Magnification, max | 426x |
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Optical scheme | Klevtsov | |
Angular visual field, max | 33' (f=25mm) | |
Angular visual field, min | 13' (f=10mm) | |
Central obstruction area, % | 12.5 | |
Length of tube, mm | 450 | |
Range of slow-motion control on the axes within | ±360° | |
Latitude range of mounting | 0...70° | |
Focuser | 2"/1.25" |
Weight of the tube, kg | 15.7 |