TS-PHOTON 10" F4 Advanced Newtonian Telescope with Carbon Tube

The PHOTON Newtonian reflector with 254 mm aperture and f/4 is a fast astrograph and rich-field telescope with carbon fiber tube.

♦ Aperture 254 mm / focal length 1016 mm / focal ratio F4

♦ High-quality parabolic primary mirror with 94% enhanced reflectivity for a brighter and more contrasty image.

♦ Large secondary mirror with 88 mm diameter for a well-illuminated image field - also suitable for cameras with full-frame size sensors.

♦ Carbon tube for more stability with better portability at the same time - Made in Germany!

♦ Optimal internal blackening with Berger Antireflexfarbe (anti reflection paint).

♦ Primary mirror cell and secondary mirror cell made of metal - no plastic - fully adjustable (image of the secondary mirror cell at left).

♦ Useful collimation aid on the primary mirror - central mark.

♦ Precise 2" MONORAIL focuser for more stability than with conventional Crayford focusers.

♦ Primary mirror fan for up to 50% quicker cooling.

♦ Focus position ready for observing with all popular eyepieces and for astrophotography.

♦ Tube rings, 8x50 finder and 35 mm extension tube for observing included in the scope of delivery.

 

TS-PHOTON 254/1016mm Newtonian Telescope with Carbon Tube - OTA

Astrophotography is easy for you with this compact Newtonian from the TS-PHOTON series. Due to the aperture ratio of f/4, this astrograph provides pure speed and therefore short exposure times. Of course, we also offer the matching coma corrector TS SUPERFLAT. Thus this PHOTON Newtonian becomes a very good astrograph.

Immerse yourself in the world of deep-sky observing with the PHOTON 10" f/4. The large aperture and the enhanced reflectivity of 94% offer unforgettable observations beyond the solar system. Watch exciting details, like spiral arms of galaxies or fine structures in planetary nebulae.

We recommend the TS-PHOTON 254mm f/4 mm to all amateur astronomers who are looking for a fast, but still portable telescope for astrophotography and deep-sky observation. The telescope is well supported by mounts like the Skywatcher EQ6 or the Celestron CGEM.
 

The advantages of the carbon composite tube:

The TS-PHOTON Newtonian comes with a high-quality carbon composite tube. Beside the weight advantage of approximately 1.5 kg, the main advantage is the better stability of the focus when the temperature changes. That is imortant for astrophotography. Then the temperature falls, metal contracts and the focus moves. Readjusting the sharpness becomes necessary. This combination of tube and mirror makes readjusting the sharpness usually obsolete even for long-term exposures. The images become sharper.
 

Berger Anti Reflex Paint for best possible internal blackening:

For this PHOTON Newtonian, we use Berger Antireflexfarbe (anti-reflex paint). It darkens the inside of the tube as well as velours foil. The big advantage, besides a lower weight, is that the paint almost gathers no dust. The optics stay clean. With velours foil, dust gathers at the primary mirror very quickly.

The image at left shows the difference between Antireflexfarbe and standard solutions. The diagram above shows a direct comparison between standard school board paint and Berger anti-reflex paint.



 

General information and features of the TS-PHOTON Newtonian telescopes:

♦ Fast parabolic optics with outstanding contrast and very good sharpness for planetary observations.
♦ High-quality 2" MONORAIL focuser with 1:10 dual speed for 2" and 1.25" accessories.
♦ Focus position perfect for DSLR and other cameras.
♦ All popular 1.25" and 2" eyepieces can be used without problems.
♦ Brighter image through enhanced 94% reflectivity of primary and secondary mirror.
♦ Motor focus can be retrofitted at any time.
♦ A 0.5 mm thin stainless steel spider provides stability. Astrophotographers will envy you for the delicate and sharp spikes around bright stars.
♦ The active ventilation for the primary mirror provides for a clearly faster cooling down.
♦ Adjustable primary mirror cell and secondary cell completely made of metal.
 

More joy in astrophotography through optimal field correction - advisory service from Teleskop-Service

Only a good coma corrector turns this Newtonian into a true astrograph. Our recommendation is the TSGPU corrector which is perfect for this telescope. it will offer you highest sharpness in the entire field, only with the TSGPU (see accessory recommendations) this Newtonian turns into a true astrograph.

The working distance from the M48 thread is 55 mm. With a T-ring, you are automatically at the right distance for astrophotography with DSLR cameras. We can offer you suitable adaptions for your astro camera anytime within the context of our consultation.

 

Aperture:	254 mm (10")
Focal length:	1016 mm
Aperture ratio:	F4
Primary mirror:	Parabolic primary mirror of BK7 with 94% reflection and protective quartz layer
Secondary mirror:	88 mm minor axis with 94% enhanced reflection and protective quartz layer
Illuminated field 100%:	25 mm
Illuminated field 90%:	38 mm - thus suitable even for sensors up to full frame size - flats recommended
Limiting magnitude:	14.7 mag
Resolution:	0.46"
Tube:	Carbon tube with internal blackening
Focuser:	2" Monorail focuser, dual speed
Backfocus:	Working distance 65 mm from the 2" receptacle with retracted draw tube
Weight:	approx. 13 kg with tube rings and finder
Length:	approx. 1000 mm
Diameter:	303 mm / 309 mm at the front side
Connection threads at the tube rings:	M6 thread (female) at both sides

In the box:
♦ 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
♦ 12V primary mirror fan
♦ Collimation manual