TS-Optics Photoline 80 OTA This 80 mm FPL53 and lanthanum air-spaced doublet has a 560 mm focal length and f/7 focal ratio. It is intended for visual astronomy and astrophotography with the appropriate camera train.
Manufacturer model: TS-Optics Photoline 80 OTA · Specifications checked against manufacturer data on 2026-11-04
This 80 mm FPL53 and lanthanum air-spaced doublet has a 560 mm focal length and f/7 focal ratio. It is intended for visual astronomy and astrophotography with the appropriate camera train.
The 2.5-inch ball-bearing rack-and-pinion focuser has dual-speed adjustment and an M63 × 1 imaging connection. CNC rings and a GP-style rail provide mounting.
The matched optional 1× flattener retains 560 mm; the 0.8× corrector gives 448 mm f/5.6. The manufacturer specifies 55 mm sensor spacing from the M48 thread for those named correctors.
TS-Optics manufacturer documentation
Exact named TS manufacturer model and its published technical table checked. Unpublished dimensions, capacities and package items are not inferred.
| Lens design | 2 element lens (doublet), air-spaced |
|---|---|
| Apo element | FPL53 from Ohara (Japan) + lanthanum glass as second element |
| Outer diameter dew shield | 103.6 mm |
| Connection eyepiece side | 1.25", 2" and female and M63x1 thread |
Data sheet
Specific References
TS-Optics Photoline 80 OTA This 80 mm FPL53 and lanthanum air-spaced doublet has a 560 mm focal length and f/7 focal ratio. It is intended for visual astronomy and astrophotography with the appropriate camera train.
Manufacturer model: TS-Optics Photoline 80 OTA · Specifications checked against manufacturer data on 2026-11-04
