APO Refractor Telescope TS-Optics Doublet SD 102mm f/7 - FPL53 with Lanthanum Objective
TS-Optics PhotoLine 102mm f/7 Dublet FPL53 Apo
This apochromatic from the PhotoLine series of Teleskop Service offers very good performance in any field of application. By combining FPL53 (Ohara, Japan) and a lanthanum glass element, a color correction equal to that of an FPL53 triplet is achieved - with significantly faster cooling. Even at the highest magnifications, the image remains free of annoying chromatic aberrations. This means that the fast refractor is not only well suited for astrophotography and wide-field observation, but also for the moon and planets.
Very fine mechanics guarantee enjoyment with the telescope and universal applicability
The new PhotoLine 102 mm apo offers, in addition to a state-of-the-art objective, mechanical equipment that leaves nothing to be desired. This means that the performance of the objective can be fully utilized both photographically and visually.
Advantages and features of the PhotoLine 102 mm f/7 apo:
♦ 102 mm f/7 FPL53/lanthanum glass lens for an image free of chromatic aberrations.
♦ Focuser with ball bearing mount and rack and pinion adjustment. The bracket is decoupled from the draw tube adjustment.
♦ Oversized draw tube for full illumination even with full-frame format.
♦ 1:10 speed reduction for precise focusing.
♦ Motorized focuser retrofittable.
♦ M68x1 (female) thread for threaded adaptations and 2" / 1.25" for pushed adaptations.
♦ Internal baffles and very good internal blackening for contrasty images
♦ Retractable spray cap for easy transport
♦ CNC tube rings and GP style dovetail bar in the scope of delivery
Astrophotography with the TSAPO102F7:
The Photoline SD-Apo 102mm f/7 is fully suitable for astrophotography, however, as with any fast refractor, the field has to be corrected so that even the stars at the edge are pleasingly round. For this, we offer the following options, the correctors are linked in the accessories section.
♦ TSFLAT25DEL 1.0x Fotolinea Corrector:
This corrector does not change the focal length. It screws directly onto the M68x1 female thread of the focuser with adapter # M68a-M63i. The working distance from the M48 thread of the camera is 55mm. So the adaptation is easy. We will be glad to help you with the adaptation.
♦ TSRed379 - 3" photoline reducer and corrector: This 0.79x corrector reduces the focal length to 564mm and increases the speed to f/5.53. Working distance from the M48 thread is 56mm. For a camera with 55mm flange focal length, it is sufficient to use a 1mm high M48 adjustment ring. The corrector is screwed onto the M68 connection thread. The illumination and correction are suitable for all sensors up to full format.
Technical specifications:
- Aperture: 102 mm
- Focal length: 711 mm
- Focal ratio: f/7
- Lens design: 2-element air-spaced objective lens (douplet)
- Apo element: FPL53 from Ohara (Japan) + lanthanum glass
- Tube material: Aluminum - CNC machined
- Tube weight: 4.1 kg incl. tube rings and dovetail rail
- Tube length: 600 mm
- Tube diameter: 105 mm
- CNC rings: 5x M6 female thread each side
- Distances of the M6 threads 1x center, 2x 19mm from center, 2x 30mm from center
- Outer diameter of spray cap 121 mm
- Focuser: 2.5" rack and pinion focuser mounted on ball bearings
- Eyepiece connection: 1.25", 2" and M68x1 thread (female)
- Depth: 123 mm from 2" receptacle / 161 mm from M68 thread
Summary of general features:
♦ Aperture 102 mm / focal length 714 mm / focal ratio f/7
♦ Adjustable doublet in cell with temperature compensation
♦ Chromatic error-free image thanks to the apo "Extra-Low-Dispersion" FPL53 element from Ohara (Japan) and Lanthanum element - thereby achieving better chromatic correction than with comparable apochromatic with doublet lenses.
♦ Shorter cooling time than with triplet lenses, thus faster operation is possible.
internal baffles for a more contrasted image.
♦ One of the best 2.5" focusers in its class, with 360° rotation, ball bearings - pinion adjustment - with dual speed gearing - motorized focus can be retrofitted
m68x1 (female) thread, 2" and 1.25" receptacle available
cNC tube rings and GP style dovetail bar are supplied
♦ Retractable dewcap for transport. Transport length of only 60 centimeters.
what is delivered in the box?
♦ Fotoline 102 mm f/7 Apo
♦ CNC tube rings
♦ GP style dovetail bar
♦ Finder shoe
APO refractor telescope TS-Optics Doublet SD 102mm f/7 - FPL53 with Lanthanum objective
