TS-Optics Photon 254 Carbon OTA This PHOTON Newtonian combines a 254 mm (10") aperture with a 1016 mm focal length at f/4. Its parabolic primary mirror and fast optical geometry support deep-sky imaging and visual astronomy.
Manufacturer model: TS-Optics Photon 254 Carbon OTA · Specifications checked against manufacturer data on 2026-11-04
This PHOTON Newtonian combines a 254 mm (10") aperture with a 1016 mm focal length at f/4. Its parabolic primary mirror and fast optical geometry support deep-sky imaging and visual astronomy.
The manufacturer specifies 94% enhanced mirror reflectivity with a protective quartz layer. Secondary-mirror size and illuminated-field figures are specific to this aperture; the table distinguishes fully illuminated field from partial illumination where TS publishes both.
The carbon fibre tube is fitted with a 2" Monorail focuser, dual speed. Use the published dimensions and assembled-weight configuration when selecting a mount; cameras and other added equipment contribute further load.
A suitable coma corrector is optional for wide-field imaging. Native focuser backfocus is available mechanical travel/spacing, not automatically the sensor-spacing requirement of a chosen corrector. Keep primary and secondary collimation aligned for the installed camera train.
TS-Optics manufacturer documentation
Exact named TS manufacturer model and its published technical table checked. Unpublished dimensions, capacities and package items are not inferred.
| Aperture ratio | f/4 |
|---|---|
| Illuminated field 100 | 25 mm |
| Illuminated field 90 | 38 mm - thus suitable even for sensors up to full frame size - flats recommended |
| Diameter | 303 mm / 309 mm at the front side |
| Connection threads at the tube rings | M6 thread (female) at both sides |
Data sheet
Specific References
TS-Optics Photon 254 Carbon OTA This PHOTON Newtonian combines a 254 mm (10") aperture with a 1016 mm focal length at f/4. Its parabolic primary mirror and fast optical geometry support deep-sky imaging and visual astronomy.
Manufacturer model: TS-Optics Photon 254 Carbon OTA · Specifications checked against manufacturer data on 2026-11-04
