|Products: 0 piece|
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.
|Focal length, mm||2130|
|Limiting visual magnitude||14m|
|Magnification, min||80x (f=25mm)|
|Magnification, max||400x (f=10mm)|
|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°|
|Magnification of the finderscope||8x|
|Angular field of finderscope||7°|
|Voltage of the supplying mains, V||220 (110) ±10%|
|Current frequency, Hz||50 (60)|
|Output voltage of the supply unit, V||12|
|Dimensions of the plywood case OTA, mm||670x340x360|
|Weight of the tube, kg||15.7|
|Weight of the telescope, kg||48|
The optical scheme of a telescope
Primary mirror part.
Corrector. 1 - cell; 2 - Mangin mirror-lens secondary; 3 - meniscus lens; 4 - padded ring; 5 - spring; 6 - threaded retaining ring; 7 - cover plug.