152 mm f/5 ED Rich Field Refractor with 4" RAP Focuser

Codice articolo: TSED152F5

The large ED refractor with 6" aperture from Teleskop-Service convinces with a fast optics - it is a classic comet seeker.

♦ Aperture 152 mm / focal length 760 mm / focal ratio f/5;

♦ Multi-coated 2-element lens with FCD1 from Hoya as ED element.

♦ The lens including cell is manufactured in Japan.

♦ Internal baffles for high contrast and against reflections.

♦ 4" ball bearing RAP focuser with improved bearing - supports cameras up to 10 kg.

♦ 2" receptacle with compression ring, 1.25" clamp - working distance suitable for 2" accessories.

♦ M63x2 female thread and M102x1 female thread for screwed adaptations for astrophotography.

♦ Retractable dew shield for transport.

♦ CNC tube rings, Losmandy style dovetail bar, carrying handle and finder shoe included.

♦ Sturdy transport and storage case is also included.

TS 152 mm f/5 Rich Field Refractor and Comet Seeker

This 2-element ED is a truly extreme telescope for the ultimate in wide-field observing. The stars are needle fine, as only a well corrected refractor can produce. At the same time, the refractor is still easily transportable with a transport length of about 70 cm and 11 kg. A stable alt-azimuth mount or a good equatorial mount like the AVX or the H-EQ5 are recommended as a base. The 2-element ED lens from Japan offers an image up to about 100x without disturbing false color due to the very good chromatic correction. Sharpness is maintained up to about 250x, but we then recommend a filter to reduce chromatic aberrations.

The 2-element objective in a temperature compensated cell:

The optics and the cell are made in Japan. The imaging quality is high and even at the maximum magnification range, the contrast remains hard. The chromatic aberrations are reduced by the ED element made of FCD1 from HOYA.

Astrophotography with the TS 152 mm f/5 ED refractor:

Although the telescope is optimized for large field observation, photography of nebulae and galaxies will also succeed with it. The fast focal ratio of f/5 allows short exposure times. However, a field corrector is absolutely necessary to get sharp stars to the edge. We recommend the TSFLAT25DEL 1.0x corrector, which screws directly into the M63x1 female thread of the focuser. The working distance is 55 mm from the M48 thread.

Technical Information

Teleskop-Service has collected a lot of helpful information about refractors and provided it in English as a PDF file: Refractors