TS Optics Photon 203 Carbon G2

TS-Optics Photon 203 Carbon G2

This PHOTON Newtonian combines a 203 mm (8") aperture with a 800 mm focal length at f/3.94. 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 with 1/10 speed reduction, adapter to 1.25" and ring clamps. 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.

Model specification

Generation 2 carbon model kept distinct from older carbon and steel Photon 8-inch tubes. Manufacturer gives 90 mm backfocus and 675 mm length for this G2 configuration.

TS-Optics manufacturer documentation

Compatibility notes

Generation 2 carbon model kept distinct from older carbon and steel Photon 8-inch tubes. Manufacturer gives 90 mm backfocus and 675 mm length for this G2 configuration.

Additional specifications