TS-Optics GSO Photon 12" F4 Advanced Newtonian Telescope with Metal Tube

The PHOTON Newtonian reflector with 305 mm aperture and the aperture ratio f/4 is a fast astrograph for astrophotography and a powerful wide-field telescope.

♦ Aperture 305 mm / focal length 1220 mm / focal ratio F4

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

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

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

♦ Adjustable primary and secondary mirror cells made of metal, useful collimation aid on the primary mirror.

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

♦ Extensive scope of delivery: 8x50 finder, tube rings, 2" extension tube for observing

♦ Start quicker with photography and observing due to fan for the primary mirror.

Note: The telescope is delivered without Dovetail bar; a suitable bar can be found under "Recommended accessories".


 

TS-PHOTON 305/1220mm Advanced Newtonian for astrophotography and observing

Astrophotography is easy for you with this 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 12" 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.
 

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:	305 mm (12")
Focal length:	1220 mm
Aperture ratio:	f/4
Primary mirror:	Parabolic primary mirror with 94% reflection and protective quartz layer
Secondary mirror:	100 mm minor axis with 94% enhanced reflection and protective quartz layer
100% illuminated field:	23 mm - ideal for APS-C format sensors with suitable coma corrector
90% illuminated field:	35 mm - thus also suited for larger sensors (flats helpful)
Resolution:	0.39 arc seconds
Limiting magnitude visual:	16.5mag
Focuser:	2" Monorail focuser with 1/10 dual speed, adapter to 1.25" and compression ring
Tube weight:	21g with tube rings and finder
Tube dimensions:	Length 1170 diameter 356m
Tube material:	Steel

♦ TS 12 f/4 Newtonian
♦ Tube rings (dovetail is optional)
♦ 2" extension tube 35 mm for visual observing
♦ Dust cover for the front opening
♦ Primary fan with battery holder
♦ 8x50 finder with quick release

Note: The telescope is delivered without Dovetail bar. Please contact us for a recommended Vixen or Losmandy style bar.