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.
Focusing and mechanical design
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.
Imaging configuration
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.
Additional specifications
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
52328
Data sheet
Aperture
80 mm
Backfocus
123 mm from 2" receptacle / 161 mm from M63 thread
Focal length
560 mm
Focal ratio
f/7
Focuser
ball bearing mounted 2.5" rack and pinion focuser
Manufacturer listed equipment
Photoline 80 mm f/7 Apo CNC tube rings GP style dovetail bar Findershoe
Manufacturer part number
TSAPO80F7
Model
TS-Optics Photoline 80 OTA
Tube diameter
89 mm
Tube length
460 mm
Tube material
Aluminium - CNC machined
Tube weight
3.10 kg
Specific References
MPN
TSAPO80F7
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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
