TS-Optics CF-APO 70 FPL55 Triplet OTA A compact apochromatic refractor for visual observing and imaging. Its adjustable, temperature-compensated lens cell houses the original FPL55 optical design.
Manufacturer model: TSCFAPO70 — original FPL55 · Specifications checked against manufacturer data on 2026-11-04
A compact apochromatic refractor for visual observing and imaging. Its adjustable, temperature-compensated lens cell houses the original FPL55 optical design.
Camera and visual use
The geared focuser accepts threaded camera adaptations. Optional TSFLAT72 and TSCFRED70 correctors are documented with 55 mm sensor spacing from M48; check the selected configuration before assembly.
Original model documentation
Specifications below describe TSCFAPO70.
Compatibility notes
Correctors are optional; use the selected corrector's spacing.
Additional specifications
Mass
2.6 kg (published weight)
Focuser load
Up to 6 kg
Native backfocus
Approximately 140 mm from M54
Case size
410 × 260 × 190 mm
Listed contents
OTA, rings, handle, Vixen-style rail, case
Optical test
Individual certificate and serial number
70672
Data sheet
Aperture
70 mm
Camera thread
M54 × 0.75 female
Dew shield
Retractable; screw lock
Dew shield diameter
88.5 mm
Focal length
420 mm
Focal ratio
f/6
Focuser
2-inch rack-and-pinion; fine adjustment; 360° rotation
Model
TSCFAPO70
Objective
Air-spaced FPL55 triplet; multicoated
Tube
CNC metal; internal baffles
Tube diameter
76 mm
Tube length
300 mm
Visual interfaces
2-inch and 1.25-inch
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TS-Optics CF-APO 70 FPL55 Triplet OTA A compact apochromatic refractor for visual observing and imaging. Its adjustable, temperature-compensated lens cell houses the original FPL55 optical design.
Manufacturer model: TSCFAPO70 — original FPL55 · Specifications checked against manufacturer data on 2026-11-04
