TS-Optics CF-APO 102 FPL55 Triplet OTA This 102 mm FPL55 air-spaced triplet 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 CF-APO 102 FPL55 Triplet OTA · Specifications checked against manufacturer data on 2026-11-04
This 102 mm FPL55 air-spaced triplet 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 model has a 3.7-inch dual-speed RAP focuser with 100 mm travel and M92, M82 and M63 female imaging threads.
With the focuser retracted, backfocus is 153 mm from the 2-inch socket, 178 mm from M63, 193 mm from M82 or 200 mm from M92. These reference surfaces must not be confused with the sensor spacing of an optional corrector.
TS-Optics manufacturer documentation
Original TSCFAPO102 documented in the manufacturer display-item listing because the former regular URL now serves SR102GPS with different mechanics. Only original-model hardware specifications are used. Display condition, price and missing case/certificate do not describe this store product. Implausible 40 mm tube diameter omitted.
| Lens | Multi-coated APO triplet lens with two special glasses |
|---|---|
| Backfocus with focuser retracted | 153 mm from the 2" receptacle, 178 mm from the M63 thread, 193 mm from the M82 thread, 200 mm from the M92 thread |
| Eyepiece side connections | M92x1, M82x1 and M63x1 female threads, 2" and 1.25" connection |
| Focuser connection thread | M102 × 1 female at tube rear |
Data sheet
Specific References
TS-Optics CF-APO 102 FPL55 Triplet OTA This 102 mm FPL55 air-spaced triplet 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 CF-APO 102 FPL55 Triplet OTA · Specifications checked against manufacturer data on 2026-11-04
