Manufacturer: -TS Teleskope
Product number: 2019-2007-2

EUR 899,00


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TS-PHOTON 12" f/5 Newtonian telescope for observing and astrophotography
This telescope from the PHOTON series is a true all-round telescope and one of the most powerful telescopes in this price range. With its versatile focal ratio of f/5, this Newtonian provides best prerequsites for lunar and planetary observations. The optimized secondary mirror with 80 mm diameter (minor axis) is designed as well for deep-sky observation as for astrophotography. The obstruction of only 26% and the extremely precise primary mirror allow magnifications up to approximately 750% at suitable low seeing. The limit of the resolution is in effect only the blurring from the earth´s atmosphere, the seeing.

The 12" f/5 PHOTON Newton already needs a stronger mount, for example the EQ8 from Skywatcher or the CGX from Celestron. With the CGX the Newtonian is even still mobile usable, while regarding the tube length of 1400 mm has to be regarded. But the 12" Photon Newtonian is mainly a telescope for stationary installation in the garden or in an observatory.

The advantages of this PHOTON Newtonians at a glance:
Moderate aperture ratio for short exposure times in astrophotography.
Very good sharpness on moon and planets
The secondary mirror provides good illumination, for example for DSLR cameras
High backfocus allows using standard coma correctors and cameras
High-quality primary mirror made of optical BK7 glass with enhanced 94% reflection for a bright clear image.
Central mark at the primary mirror for easy precise collimation.
Stable 1:10 dual speed 2" Crayford focuser with 1.25" reduction
Motor focus can be retrofitted at any time.
Faster cooling down for observing and photographing earlier due to fan for the primary mirror
Steel tube and metal mirror cells for optimal collimation stability
Only from TS: carbon tube for retrofitting - for ultimative transportation



Why do we recommend a Newtonian from the Photon series instead of all other comparable Newtonians?

The primary mirrors of the Photon series are made by GSO. The manufacturer has been keeping the optical performance of the mirrors on constantly high level for years. The Photon Newtonian telescopes are made to the specifications of Teleskop-Service. The size of the secondary mirror is optimized, the distances of the focus position is optimized for observation as well as for phpotography. But above all, Photon Newtonians can adapt to your interest, they can "grow" with your demands:
For every Photon 12" Newtonian, we offer a carbon tube kit on which you can continue to use all parts of your Newtonian.
We offer smaller or large secondary mirrors so you can customize the Newtonian to your interest, no matter whether you opt for planetary observation or take images with a full-frame size sensor.






The precise 2" Crayford focuser with 1:10 micro transmission:
We offer this Newtonian telescope with a 2" Crayford focuser with integrated 1:10 dual speed transmission. This focuser works very accurate even with heavy accessories like astro cameras. With a bit of experience, you can achieve a focusing accuracy of around 0.08 mm which is sufficient even for sensors with very high resolution.

The focuser is fully compatible with the optional TS Motorfocus system, allowing vibration free and precise focusing for visual observing or astro-imaging.

Quick manual for the focuser: Telescope-Service provides a quick guide for the TS Crayford focusers. You can download the PDF here.


High-quality primary mirror with f/5 and 94% reflectivity
This Newtonian shows its full potential at observation and astrophotography due to a high-quality primary mirror made of optical BK7 glass, free from internal stress. The parabolic mirror has a 94% reflectivity coating, thus offering a brighter and contrasty image. You can instantaneously notice the difference to a standard coating.

With the focal ratio of f/5, the Newtonian belongs to the all-round telescopes for astrophotography and observing.

No vignetting at the edge - full illumination through large 80 mm secondary mirror
No shadow at the edge, you will be satisfied with a bright image with full illumination even with modern DSLR or CCD cameras. But 2" wide field eypieces are also supplied with light up the the edge of the field stop.

Enjoy your image more with 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 ideal for this telescope. It will provide maximum sharpness in the entire field, so only the TSGPU (see accessory recommendations) makes a true astrograph out of this Newtonian.

Astrophotography with DSLR cameras:
TSGPU Coma Corrector
SKM48-... matching T-Ring to the camera mount

... and you already have the optimal distance and get sharp stars in the entire field of view. Guiding can be done via the finder or a small guiding scope which fits into the finder shoe (or bracket).

Astrophotography with the ZWO ASI 1600 camera
The highly sensitive camera and the fast Newtonian with the TSGPU corrector are an optimal team for astrophotography. The stars are sharp to the edge. The adaption from the corrector to the camera is easy, we will be happy to advise you.

The advantage - you have galaxies, nebulae and star clusters on the sensor already after 40 seconds. Longer exposure times are not necessary, guiding can be dropped. Simply let the well polar aligned mount track and wonderful astrophotographs form almost on their own. The fast f/5 speed of the Newtonian and the extremely fast sensor of the camera are making it possible.

Introducing the TS PHOTON telescope series
A picture is worth a thousand words, a video is even more helpful - so TS made one:



Collimating Newtonian telescopes made easy
Collimating a Newtonian telescope is not difficult at all, as the following video shows:


Aperture:305 mm (12")
Focal length:1500 mm
Aperture ratio:F5
Primary mirror:Parabolic primary mirror with 94% reflection and protective quartz layer
Secondary mirror:80 mm minor axis with 94% enhanced reflection and protective quartz layer
Illuminated field:28 mm with 100%
Limiting magnitude:16.5mag
Resolution:0.39"
Focuser:2" Crayford focuser, 1/10 dual speed
Tube weight:22 kg with tube rings and finder
Dimensions of the tube:Length 1400 mm, diameter 356 mm
Photon 12" f5 Newtonian with tube rings and 8x50 finder
Dual speed 2" Crayford focuser with reduction to 1.25"
2" extension tube 35 mm for easier reaching focus when observing visually
Dust covers, 12 V primary fan
Losmandy style dovetail bar
Collimation manual



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Reviews

Written by Xenofon Nastos
on 2022-10-26

"Ich habe das Teleskop hier vor kurzem gekauft als Ersatz für mein 8"" GSO Newton. Der Versand war problemlos trotz der gewaltigen Größe. Ich habe das Paket kaum alleine bewegen können. Obwohl ich weiß was 12"" bedeutet hat mich die schiere Größe des Rohrs erschlagen. Ein Newton in dieser Größe ist schwierig zu bewegen, Gott sei Dank hat es jetzt einen festen Platz in meiner Sternwarte... Die Qualität der Einzelteile ist wie bei TS gewohnt sehr gut. Ich hatte anfangs ein paar Schwierigkeiten mit der ASI1600 in den Fokus zu kommen, ich musste den Hauptspiegel deswegen in Richtung des Fangspiegels bewegen. Die Kollimation gestaltete sich unproblematisch und in Zusammenhang mit dem Baader MPCC Komakorrektor liefert die Optik bis in die Ecke runde Sterne. Die ersten Aufnahmen sind vielversprechend auf jeden Fall ein großer Sprung verglichen mit dem 8"" Newton. Wenn man den Platz und eine entsprechende Montierung (wiegt ganze 24Kg inkl. Kamera, FR, Focuser, Guider, etc.) hat, kann man das Teleskop empfehlen, ist aber verständlicherweise nichts für den mobilen Einsatz."