TS-Optics Photon 200 f/5 OTA This PHOTON Newtonian combines a 200 mm (8") aperture with a 1000 mm focal length at f/5. Its parabolic primary mirror and fast optical geometry support deep-sky imaging and visual astronomy.
Manufacturer model: TS-Optics Photon 200 f/5 OTA · Specifications checked against manufacturer data on 2026-11-04
This PHOTON Newtonian combines a 200 mm (8") aperture with a 1000 mm focal length at f/5. 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 metal tube is fitted with a 2" Crayford focuser with 1/10 dual speed transmission. 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 Unpublished dimensions, capacities and package items are not inferred.
| Field illumination | 28 mm diam. (100%) - ideal for APS-C format sensors with matching coma corrector |
|---|---|
| Dimensions of tube | length 900 mm, diameter 230 mm |
| Size package | 31 cm x 40 cm x 100 cm |
| Total weight | 12.2 kg |
| Manufacturer listed equipment | Photon 200 mm f/5 Newtonian with tube rings and 8x50 finder 2" Crayford focuser with 1:10 dual speed transmission and reducer to 1.25" 2" extension tube 35 mm for easy reaching of the focus when observing Dust covers, 12 V primary mirror fan Vixen/EQ5 style dovetail bar - length 335 mm Collimation manual |
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TS-Optics Photon 200 f/5 OTA This PHOTON Newtonian combines a 200 mm (8") aperture with a 1000 mm focal length at f/5. Its parabolic primary mirror and fast optical geometry support deep-sky imaging and visual astronomy.
Manufacturer model: TS-Optics Photon 200 f/5 OTA · Specifications checked against manufacturer data on 2026-11-04
