TS-Optics 121SDQ Apo DEMO
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The successful Flatfield Apo series from Teleskop-Service is complemented by this powerful 5-element apochromat. The apo is still transportable and is well supported by mounts like the Skywatcher EQ6, Celestron CGEM or the iOptron CEM40.
The field is perfectly flattened by the built-in corrector. You will have a perfect star image in the field right from the start, without the hassle of searching for correctors and the right distance. Although the apo has been optimized for astrophotography, it will also provide very good visual performance. The stars are crisp and are reproduced without chromatic aberrations. The image remains sharp and high-contrast up to approx. 350x.
The CNC focusert is optimized for photography and can hold a payload of up to 8 kg. The adjustment of the drawtube is carried out via a gear drive. In contrast to Crayford focusers, this focuser has an independent bearing system. This also guarantees sensitive adjustment at maximum load. In addition to 2" and 1.25" receptacles, an M82x1 thread (internal thread) is also available for screw adaptations. Suitable adapters, for example for the M68x1 thread, are of course available.
♦ Excellent FPL53 triplet lens (glass from Ohara, Japan)
♦ Integrated 2-element flattener with optimized distance to lens from factory for optimal field sharpness
♦ 4" CNC rack and pinion focuser
♦ The system is free of disturbing reflexes.
♦ Lens and corrector are adjustable - are delivered optimally adjusted
Our goal was to achieve uncompromising image quality on the axis AND in the field without additional flatteners or correctors. The corrector must be permanently installed and, of course, at the optimum distance from the lens. This can hardly be achieved with an optional flattener. In addition, the apochromat must be mechanically solid and easily adjustable. This was achieved with the Flatfield Apo.
Thanks to the generous working distance of 125 mm from the 2" receptacle or 145 mm from the M82 internal thread, you can adapt any camera with filter wheels, off-axis guiders, etc. We will be happy to recommend the appropriate adapter rings and extensions for your camera and accessories.
♦ Every Apo is tested in the factory and delivered with a check protocol.
♦ Before shipping, every Apo is opened and completely checked in our technical department.
1. scope of delivery
2. cosmetics (e.g. dust on the lens)
3. optimal adjustment of the eyepiece extension
4. checking the optics of the artificial star and optimal collimation
|Focal length:||677 mm|
|Objective:||Triplet lens, airspaced|
|Corrector:||2-element corrector - built into the tube|
|Back focus from the 2" receptacle:||125 mm|
|Back focus from M82x1 female thread:||145 mm|
|Adjustment range of the drawtube:||38 mm|
|Eyepiece side connections:||M82x1, 2" and 1.25" receptacle|
|Fine focusing:||1/10 micro reduction (dual speed system)|
|Photographic load capacity:||Up to 8 kg accessory weight|
|Telescope weight:||8.85 kg (incl. tube rings, handle, dovetail rail)|
|Tube length:||600/700 mm (dew cap retracted/extended)|
|Dew cap diameter:||160 mm|
|Tube diameter:||132 mm|