The TS 70mm quadruplet is an excellent travel telescope for astrophotography. This apochromat offers a fully illuminated and corrected field with a 45mm diameter, so it is also suitable for cameras with full format sensors. The FPL-53 triplet lens corrects the color error. The image is free of color errors on the axis and in the field. This quadruplet is a photo apo. The back focus is not sufficient for 2" or 1¼" zenith mirrors. The TSZPT2 T2 diagonal prism enables observation with 1¼" eyepieces.

On the camera side, the apo has an M48x0.75 external thread. From this thread you have between 40mm and 70mm distance to the focal plane, depending on the position of the extension tube. So you have enough space for all common astro cameras, SLR and system cameras. If you unscrew the M48 adapter, you get an M54x0.75 internal thread. You gain another 6.5mm optical path. A 2" filter thread is integrated in this adapter. We offer matching T-rings for the M48 thread to connect DSLR. If you want to use a camera with a T2 connection, we also offer the adapter to T2.

Characteristics:

• Quadruplet design with FPL-53 triplet lens and correcting element inside the OTA
• Aperture 70mm, focal lenght 350mm, f/5.0
• Max. image field 45mm Ø
• Multi-coatings on any glass-air surface
• 3" R&P focuser with 30mm focus travel
• Stable metal OTA

• Optical tube 70/350mm
• Dew cap, retractable
• 3" R&P focuser with micro reduction and dovetail
• CNC Tube rings
• Vixen level dovetail with 1/4-20 photo thread