TS-Optics 70 mm f/6.78 ED 4-Element Flatfield Refractor Telescope

The 70 mm quadruplet apo is a good refractor with SD lens for astrophotography with a corrected flat field of view.

♦ 70 mm aperture / 474 mm focal length / focal ratio f/6.78

♦ 4-element quadruplet design with a 32 mm diameter, fully corrected image field - ideal for cameras up to APS-C sensors

♦ The 2-element corrector is fixed in the tube.

♦ Good image through SD apo lens with FPL51 and lanthanum special glasses

♦ Sturdy 2.5" rack and pinion focuser (70 mm travel) with screw adaptation M54x0.75 and reduction to 2" and 1.25"

♦ No adapter battle - just focus and you´re automatically at the right distance.

♦ Generous focus distance of 135 mm from the 2" receptacle onwards

♦ Finder shoe, CNC tube rings, EQ5 style dovetail bar and high quality transport case included in delivery


 

TS-Optics 70 mm f/6.78 SD travel refractor for observation and astrophotography

The SD apo is an ideal travel telescope for all photographers. The telescope is very well corrected by the built-in corrector on the axis and in the field. In addition, the SD apo also offers a decent visual performance. Magnifications of up to approx. 150x are well handled by the lens, the chromatic error is significantly reduced. We recommend the telescope for all photographers who are looking for a portable, inexpensive and yet well corrected refractor for photography and observation. Since the corrector is built into the tube, the costly adapter battle is no longer necessary. Simply focus and you are automatically at the optimal distance.
 

The connection of accessories:

The TSED70Q has a very comfortable working distance of 135 mm from the 2" receptacle, so you can use 2" star diagonal mirrors and eyepieces and you can focus with ease.

To connect a camera, we recommend the adapter TSFA240, this adapter has 40 mm length and a T2 thread on the camera side. With this adapter you can connect all common DSLR, system or astro cameras. In addition, the focuser has an M54x0.75 female thread for screwed adapters.

 

Aperture:	70 mm
Focal length:	474 mm
Focal ratio:	f/6.78
Objective:	2-element SD lens with FPL51 and Lanthanum special glass
Corrector:	2-element corrector installed in the tube
Focuser:	2.5" RAP focuser with 2" and 1.25" reduction Adapter and M54x0.75 female thread
Corrected and flattner field:	32 mm with 100% correction
Working distance from the 2" receptacle:	135 mm
Tube weight incl. accessories:	2.8 kg
Tube length:	370 mm min.
Tube diameter:	82 mm
Dew shield diameter:	93 mm
Outer dimensions transport case:	45 x 23 x 19.5 cm (LxWxH)

In the box:
♦ TS 70 mm f/6.78 4-element ED
♦ Finder shoe
♦ Transport case