TS-PHOTON 10" F5 Advanced Newtonian Telescope with Carbon Tube

TS-PHOTON 10" F5 Advanced Newtonian Telescope with Carbon Tube

The PHOTON Newtonian reflector with 254 mm aperture and f/5 is a powerful telescope for visual observing and astrophotography.

♦ Aperture 254 mm / focal length 1250 mm / focal ratio F5

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

♦ 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" Crayford focuser, 1:10 dual speed for accurate focusing.

♦ 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 254/1250mm Newtonian Telescope with Carbon Tube - OTA

This PHOTON Newtonian is a true all-round telescope and provides best prerequsites for the observation of moon, planets and deep-sky objects. The well-dimensioned secondary mirror provides sufficient illumination for astrophotography with all common cameras. We recommend the TS-PHOTON 254/1250mm to all amateur astronomers who are looking for a versatile and portable telescope for all application areas of amateur astronomy. 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" Crayford 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:	1250 mm
Aperture ratio:	F5
Primary mirror:	Parabolic primary mirror of BK7 with 94% reflection and protective quartz layer
Secondary mirror:	70 mm minor axis with 94% enhanced reflection and protective quartz layer
Illuminated field:	28 mm with 100%
Limiting magnitude:	14.7 mag
Resolution:	0.46"
Tube:	Carbon tube with internal blackening
Focuser:	2" Crayford focuser, dual speed
Backfocus:	Working distance 65 mm from the 2" receptacle with retracted draw tube
Weight:	approx. 13.5 kg with tube rings and finder
Length:	approx. 1150 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/5 PHOTON Newtonian OTA
♦ 2" Crayford focuser with reduction to 1.25"
♦ 2" extension tube 35 mm
♦ 8x50 finder with bracket
♦ Dust covers for focuser and front side
♦ 12V primary fan
♦ Collimation manual