TS-Optics Photoline Doublet SD-Apo 80mm F/7 + 0.79x Reducer (TSAPO80F7-USED)

TS-Optics Photoline Doublet SD-Apo 80mm F/7 + 0.79x Reducer

The Photoline apo from TS-Optics offers a very good performance in virtually every area of observation and astrophotography. The imaging quality sets standard in this class. In the lens, the "extra low dispersion" glass FPL53 from Ohara (Japan) is used, combined with lanthanum glass. This high-quality apo element and the relaxed focal ratio of f/7 allow for an image virtually free of chromatic aberration. Through the doublet lens, a faster cooling is achieved, too.

Best mechanics ensure an outstanding imaging performance for years and success in astrophotography.
Even the best optics can only be successfully used if the machanics is right. Here, savings are often made at the wrong end. This is not the case for the Photoline 80 mm f/7 apochromat.

Advantages and features at a glance:

• Ball bearing mounted focuser with rack and pinion drive. The bearing is decoupled from the adjustment of the draw tube.
  
• Oversized draw tube with 60 mm clear aperture for full illumination even at full-frame format.
  
• 1:10 dual speed transmission for ultra-precise focusing
  
• High-quality tube with internal baffles and very good internal blackening - nodisturbing stray light
  
• M63x1 thread (female) allows for firmly screwed adaptions for astrophotography
  
• The dew shield can be retracted - then, the transportation length is only 46 centimetres
  
• Multi-coated state-of-the-art two element lens with FPL53 as APO element and lanthanum glass as second element
  
• High-quality CNC rings and GP style dovetail bar with photo thread

Astrophotography with the TSAPO80F7

The Photoline SD-APO 80 mm f/7 is suited for astrophotography without any restrictions, but, as with every fast refractor, the field has to be corrected for obtaining perfectly round stars at the edge. We offer the following possibilites, the correctors are linked in the "recommended accessories" section:

• TSFlat25DEL - universal 2.5" field corrector without focal length change: The corrector is suitable for all sensors up to full format. The corrector is screwed directly to the M63x1 female thread of the focuser. The working distance from the M48 connection thread to the camera sensor is 65 mm. If you are using a camera with 55 mm flange focal distance, such as an SLR with T-ring, you will still need a 10 mm M48 extension # TSVF210.
  
• TSREDJM63S - 0.8x image field corrector with focal length reduction: The corrector reduces the focal length to 448 mm and improves the focal ratio to f/5.6. The corrector is directly screwed to the M63x1 female thread of the focuser. The working distance from the M48 thread to the sensor is 57.6 mm. If you use a camera with 55 mm flange focal distance (distance from the connection thread to the sensor), then simply turn the fine adjustment out by 2.6 mm and you have the perfect distance. There is no need for an adapter battle.

• Aperture 80 mm / focal length 560 mm / focal ratio f/7
  
• Adjustable doublet lens in temperature-compensated cell
  
• Image without chromatic error through "Extra Low Dispersion" FPL53 apo element from Ohara (Japan) and lanthanum glass als second element
  
• Internal baffles
  
• One of the best 2,5" focusers in its class - ball-bearing mounted draw tube - adjustment by rack and pinion - designed for high payload
  
• 2" receptacle and female M63x1 thread for screwed adaptions can be used
  
• High-quality CNC tube rings and GP style dovetail bar are included
  
• Finder shoe is mounted on the focuser
  
• Dew shield retractable for easy transportation - a very fine travel telescope with only 3 kg weight and 46 centimetres transport length