TS-Optics Photon 10" f/4

Codice articolo: TPC10F4G

The telescope is optimized for astrophotography with full-frame cameras and can be combined with common coma correctors

Aperture 250 mm / focal length 1000 mm / focal ratio f/4
Parabolic primary mirror with 94 % reflectivity
Secondary mirror with 80 mm diameter small axis with 94 % reflectivity
CNC secondary mirror spider for more stability
Carbon tube for more focus stability and less weight
3" R&P focuser with threaded connection and receptacle - suitable for EAF
Inner baffle in the tube for more contrast
CNC front ring, primary mirror cell and tube rings
Three fans behind the primary mirror for fast cooling
Losmandy dovetail bar and Vixen/EQ5 dovetail bar included in scope of delivery

TS-Photon 250 mm f/4 Advanced Newtonian with carbon tube

The powerful Newtonian with carbon tube is optimized for astrophotography and offers very good speed for short exposure times thanks to the focal ratio of f/4. The generous back focus allows the connection of suitable coma correctors for very good field correction. We particularly recommend the TS GPU "Superflat" corrector. This turns the 10" Photon into a very good astrograph. Of course, the Photon is also suitable for observing.

The advantages of the 10" TS Photon Newtonian:
Fast, high-quality parabolic primary mirror for very good contrast and sharpness
Improved 3" rack-and-pinion focuser - with M77x0.75 female thread and M74x0.75 male thread for screw adaptations
Massive secondary mirror spider struts, twisting is no longer possible, which facilitates collimation (Gen. 2)
Generous working distance from the 2" receptacle of the focuser, so that all common correctors can be used
Brighter image due to enhanced mirror coating on primary and secondary mirror
Primary mirror cell and secondary mirror cell are adjustable and of course made of metal

Astrophotography with the TS-Photon 10" f/4 Newtonian:
Only a good coma corrector turns the Newtonian into a real astrograph. Our recommendation is the TSGPU "Superflat" corrector, which is perfect for this telescope. It will offer you a very high sharpness in the entire field. The illumination is very good up to APS-C format. Correction is even given up to full-frame format. Of course, we always recommend a FLAT for even brightness distribution. Suitable flat field generators are of course available from us. The working distance from the M48 thread of the GPU is 55 mm, making it suitable for all common cameras.

Aperture: 250 mm (10")
Focal length: 1000 mm
Focal ratio: f/4
Primary mirror: Parabolic primary mirror with 94 % forced reflection and quartz protective coating
Secondary mirror: 80 mm small axis with 94 % forced reflection and quartz protective coating
Resolving power: 0.46"
Limiting magnitude: 14.7 mag
Focuser: 3" RAP focuser with ball bearings
Eyepiece side connections: M77x0.75 internal, M74x0.75 external, 2" and 1.25"
Backfocus: Working distance approx. 90 mm from the 2" receptacle with fully retracted drawtube
Dimensions of the tube: length 950 mm, diameter 300 mm
Weight of the tube: 13.5 kg with rings