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.
Optics and illumination
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.
Focusing and tube
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.
Imaging configuration
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.
Exact named TS manufacturer model and its published technical table checked. Unpublished dimensions, capacities and package items are not inferred.
Additional specifications
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
59223
Fiche technique
Diamètre
254 mm (10")
Backfocus
Working distance 65 mm from the 2" receptacle with retracted draw tube
Focale
1016 mm
Porte-oculaire
2" Monorail focuser, dual speed
Longueur
approx. 1000 mm
Magnitude limite
14.7 mag
Équipement indiqué par le fabricant
TS 254 mm f/4 PHOTON Newtonian OTA with carbon fiber tube 2" Monorail focuser with reduction to 1.25" 2" extension tube 35 mm 8x50 finder with bracket Dust covers for focuser and front side 12 V primary mirror fan Collimation manual
Référence fabricant
TPC10F4
Modèle
TS-Optics Photon 254 Carbon OTA
Miroir primaire
Parabolic primary mirror of BK7 with 94% reflection and protective quartz layer
Résolution
0.46"
Miroir secondaire
88 mm minor axis with 94% enhanced reflection and protective quartz layer
Tube
Carbon tube with internal blackening
Poids
approx. 13 kg with tube rings and finder
Références spécifiques
MPN
TPC10F4
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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
