TS-Optics 110 mm f/6 Apo - 2.7" RAP focuser - Tube Rings

TS 110 mm 660 mm f/6 APO Doublet Refractor

With the focal ratio of f/6, the apo is faster than simple EDs with usually f/7 to f/9. To still achieve a good color correction, the ED special glass was supplemented with another special glass (lanthanum glass). This achieves a correction equivalent to a normal f/7 to f/8 ED refractor. The high luminosity also offers advantages for astrophotography, in only one night one can expose an object. Suitable image field correctors can be found under "Recommended Accessories".

All lens surfaces are coated with a multi-coating for maximum light transmission. Baffles inside the optical tube and in the focuser prevent reflections and ensure sharp, high-contrast images.

The TS 110 mm Apo has a high-quality 2.7" rack and pinion focuser with ball bearings. This guarantees sensitive and accurate focusing even with heavy accessories. The focuser accepts 2" and 1.25" accessories. You can also use 2" diagonals and common correctors.

The comprehensive features are complemented by sturdy CNC tube rings and a sturdy transport and storage case.

Astrophotography with the TS 110 mm f/6 Apo

The fast apochromat is very well suited for astrophotography. The robust 2.7" RAP focuser supports even heavy cameras, offers 360° rotation and has dual speed for precise focusing. We highly recommend the following correctors:

WiflatT2 - 1.0x corrector
The corrector is simply plugged into the 2" receptacle and is well suited for cameras up to APS-C format. The working distance is 55 mm from the T2 thread.

TSFLAT25G2 - 1.0x full frame corrector
The professional corrector is designed for full frame cameras. The M74-Flat25 adapter is required for connection to the apo. This allows you to screw the corrector directly to the focuser.

For the correct working distance (55 mm from the M48 thread), an 8 mm long M68x1 extension # TSVM688 is required.

TSRED379 - 0.79x focal length reduction
To all astrophotographers for whom f/6 is not fast enough, we offer a focal reducer/corrector. The focal ratio improves to f/4.74. For the connection to the apo, the adapter M74-FLAT25 is required. This allows you to screw the corrector directly to the focuser.

To achieve the correct working distance of 55 mm from the M48 thread, you still need 2x M48 tuning rings with 1 mm thickness (M48abstimmring1).

Technical Information

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

Safety informations: PDF Download