TS-Optics 126 mm f/7 Quadruplet Flatfield Apo - with optics test

TS 126 mm f/7 quadruplet apochromat with flat image field up to full frame format

The apo is a versatile telescope for observation and astrophotography. By using two ED glasses in the optical system, the apo offers an image free of chromatic aberration up to the highest magnification range. The generous working distance allows the use of 2" star diagonals and accessories for visual observation. Due to the moderate focal ratio of f/7, the apo is also a large field telescope and a planetary telescope.

However, the apo is just as well suited for astrophotography. The flat image field shows pinpoint stars right up to the edge, even with full-frame sensors. With f/7 you have enough resolution to photograph even small galaxies and planetary nebulae with lots of detail. All necessary tubes and adapters to M48 and 2" filters are already included in the scope of delivery. The optional 0.8x reducer, which is designed for this apo, improves the focal ratio from f/7 to f/5.6 and considerably shortens the exposure times.

The most important features of the 126 mm f/7 apo:

The corrector is fixed in the tube; as soon as you have focused the camera, you are automatically at the correct distance for optimal field correction.

The 3.2" focuser is optimized for astrophotography and, in addition to 2" and 1.25" connections, also offers M68x1, M54x0.75 and M48x0.75 connections for screw adaptations.

A precise 360° rotation and a reduction for exact focusing are included.

A retractable dew shield shortens the transport length and even makes the apo suitable for hand luggage on airplanes.

The apo impresses with very high-quality mechanical workmanship, such as CNC rings and a versatile carrying handle, which is also suitable for connecting guide scopes.

Each 126 mm quadruplet apo is visually and mechanically checked by Teleskop-Service before shipping.

This is how we hand over the apo to the amateur astronomer:

Every single apo is checked in our technical department before being stored to guarantee consistently high product quality.

The mechanics are tested and the focuser is optimally adjusted.

The objective is cosmetically checked and cleaned. We also check that all counter screws are correctly tightened. These often loosen during transportation.

The optics are collimated and the result is checked on the optical bench. The telescope is given a serial number.

A complete optics test is carried out, which is enclosed with the telescope (star images and ronchi image on the optical bench in autocollimation).

Only then are the telescopes handed over to the warehouse and prepared for dispatch.

Technical information:

Teleskop-Service has collected a lot of helpful information on refractors and made it available in English as a PDF file: refractors.pdf

Instructions for adapting the ZWO EAF to the focuser

The instructions language is German and English ... eaf-tsapo-phq.pdf

Safety informations: PDF Download