TS-Optics Photoline 102 OTA This 102 mm FPL53 and lanthanum air-spaced doublet has a 714 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 102 OTA · Specifications checked against manufacturer data on 2026-11-04
This 102 mm FPL53 and lanthanum air-spaced doublet has a 714 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 original Photoline tube uses a 2.5-inch dual-speed rack-and-pinion focuser. TS documents the same OTA within its corrected photographic bundle.
Imaging configuration
The optional corrector uses 55 mm spacing from its M48 camera connection.
Additional specifications
Native focal length
714 mm in manufacturer prose; 711 mm in technical table (unresolved discrepancy)
Thread for corrector
M63 × 1
Optional imaging corrector
Matched 0.8× three-element corrector; 55 mm sensor distance from its M48 × 0.75 thread
Corrector not assigned to OTA package
Manufacturer source describes a corrected bundle; this record is the native OTA
61222
Data sheet
Aperture
102 mm
Dew shield diameter
121 mm
Focuser
2.5-inch dual-speed rack-and-pinion
Manufacturer part number
TSAPO102F7
Model
TS-Optics Photoline 102 OTA
Mounting
CNC rings and GP/EQ5-style dovetail; finder shoe
Native focal ratio
f/7
Objective
Air-spaced FPL53 / lanthanum SD doublet
OTA weight
4.1 kg
Transport length
600 mm
Specific References
MPN
TSAPO102F7
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TS-Optics Photoline 102 OTA This 102 mm FPL53 and lanthanum air-spaced doublet has a 714 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 102 OTA · Specifications checked against manufacturer data on 2026-11-04
