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.
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.
This listing is the native OTA; a bundled corrector is not assumed. The original source is internally inconsistent: prose gives 714 mm native focal length while its table gives 711 mm. The optional corrector uses 55 mm spacing from its M48 camera connection.
TS-Optics manufacturer documentation
Original TSAPO102F7 OTA identified in TS’s own corrected-bundle documentation. Only OTA data and separately labelled optional corrector information are used. Manufacturer prose says 714 mm native focal length while table says 711 mm; unresolved. The newer SR102GPA is not substituted.
| 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 |
Data sheet
Specific References
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
