TS-Optics PHOTOLINE 115-mm-f/6,95-Triplet-Apo Telescope

TS Optics PHOTOLINE 115 mm f/6.95 Triplet Apo Refractor Telescope

The PHOTOLINE triplet apo from Teleskop-Service offers an image which was available only from significantly more expensive refractors until now. By the neatly manufactured objective, the chromatic aberration is brought down to a non-bothersome minimum. The correction is noticable better than the one of comparable ED instruments.

The objective is not cemented, but airspaced. Of course, it is adjustable. We have compared imaging quality and sharpness in field with a similar instrument with 110 mm aperture and came to the conclusion that the visual and photographic quality is significantly better.
 

The advantages of the TS PHOTOLINE 115 mm Apo:

• High class triplet objective with two special glasses - optical quality and colour correction significantly better than from simple FPL53 dublets.
• Retractable dew cap - thus perfectly suited for transportation - transportation length only approx. 71 cm!
• High-quality 2.5" RAP focuser with 1:10 gear reduction for precise focusing
• 360° rotation of the focuser
• M68x1 female thread for screwed adaptations
• Noticable better illumination than all comparable apochromatic telecopes with smaller 2" focusers - the APO can be used up to full-frame.
• CNC machined tube rings - no simple aluminum cast
• The objective is mounted collimatable and temperature compensated. The cell will keep the adjustment - ideal for transportation
• Every single apochromat is tested and perfectly adjusted on our optical bench prior to shipping. You get a tested and checked telescope.

 

The APO lens of the PHOTOLINE 115 mm:

For maximal contrast, the triple objective is multicoated on every air-glass surface. It is mounted stress-free in a temperature compensated cell. The image is free from annoying chromatic aberrations and allows magnifications up to 300x.

Even when photographing bright stars, no blue fringe will affect the impression of the image.

The objective, in this version, is made for Teleskop-Service. By using the two special glasses (Lanthanum and FPL51), a very good correction of the chromatic error is achieved, in practice comparable to the correction of an FPL53 triplet lens.
 

The 2.5" RPA focuser

The ball bearing mounted focuser holds accessories up to approx. 5 kg without tilting or slipping. Camera sensors up to full-frame size are completely illuminated.

• The drawtube is moved by a rack & pinion system. It is separated from the bearing section by ball bearings. Even under heavy load, it can be operated smoothly with fine movements.
• The focuser offers a 360° rotation.
• Through the 1:10 dual speed transmission, a more precise focusing is achieved.
• The female M68x1 thread at the focuser allows screwed adaptions for astrophotography. We offer suitable adapters. Of course, a 2" and a 1.25" adaption are included.

 

Technical Information

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