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TAL-150K Klevtsov's


Telescope


Based on a novel optical design by Klevtsov, the versatile TAL-150K is the ideal instrument for the advanced amateur astronomer who desires high resolution and excellent light-gathering power (limiting visual magnitude 13) in a highly portable telescope.

The TAL-150K provides an aperture of 150mm and focal length of 1550mm in a very compact tube length of only 425mm (17 inches). Klevtsov's revolutionary catadioptric design employs a sub-aperture meniscus correcting lens (like the familiar Maksutov) combined with a Mangin mirror-lens secondary. Its fast focal ratio of f/10.3, flat field, and excellent correction of coma, spherical aberration, and astigmatism (14 micron star images at a distance of 10mm from the optical axis!) make the TAL-150K a superb instrument for astrophotography, far surpassing conventional Schmidt-Cassegrain and Ritchey-Chretien systems.

The telescope is supplied with an 6x30mm finder with a 8 degree field of view, an equatorial mount with motor drive in Right Ascension and manual slow-motion in Declination, two eyepieces of 25mm and 10mm focal length, and a 2x Barlow lens. At the customer's request, the mounting can be supplied either on a rigid metal pedestal or a hardwood tripod. A fitted wood carrying case is also included.

To comfortably observe objects near the zenith, a diagonal mirror which diverts the light path by 90 degrees is also supplied, as well as an adaptor for 35mm SLR cameras.

Specifications

Aperture, mm 150
Focal length, mm 1550
Focal ratio 1:10.3
Resolving power 0.8"
Limiting visual magnitude 13m
Magnification, min 60x (f=25mm)
Magnification, max 320x (f=10m & Barlow 2x)
Optical scheme Klevtsov
Angular photographic field 40' (23.3mm)
Angular visual field, max 41' (f=25mm)
Angular visual field, min 6.3' (f=10m & Barlow 2x)
Central obstruction area, % 13
Length of tube, mm 425
Range of slow-motion control on the axes within ±180°
Latitude range of mounting 0...70°
Focuser 1.25"
Magnification of the finderscope 6x
Angular field of finderscope
Voltage of the supplying mains, V 220 (110) ±10%
Current frequency, Hz 50 (60)
Output voltage of the supply unit, V 12
Dimensions, mm 850x910x1620
Weight of the telescope, kg 23
Weight of the telescope packed, kg 30

Optical train of telescope

Optical train of telescope.

Ocular and focuser of the TAL-200K telescope     The tube of the TAL-200K telescope

Optical scheme of TAL-150K telescope: primary mirror part

Primary mirror part.

  Corrector

Corrector. 1 - cell; 2 - Mangin mirror-lens secondary; 3 - meniscus lens; 4 - padded ring; 5 - spring; 6 - threaded retaining ring; 7 - cover plug.

   

contact information

Phone:
007(383)216-08-76
007(383)226-07-65
Phone/Fax:
007(383)226-15-94
179/2, D. Kovalchuk str.,
Novosibirsk, 630049, Russia

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branches in Russia

St. Petersburg:
spb@npzoptics.ru
Moscow:
msk@npzoptics.ru

customer service

Questions:
info@npzoptics.ru
Quality and service:
service@npzoptics.ru
Sales in Russia:
salesru@npzoptics.ru
Export operations:
sales@npzoptics.ru

technical support

admin@npzoptics.ru
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