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 prerequisites 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 750x at suitable low seeing. The limit of the resolution is in effect only by 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. The Newtonian is even still mobile usable to a limited extent, while 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 the PHOTON Newtonian at a glance

• Moderate focal ratio for short exposure times for astrophotography.
• Very high sharpness on moon and planets
• Secondary mirror provides good illumination, for example for DSLR cameras
• Large backfocus allows using popular coma correctors and cameras
• High-quality primary mirror of optical BK7 glass with enhanced 94% reflectivity coating provides a bright, clear image.
• Stable 2" Crayford focuser with 10:1 dual speed and 1.25" reduction adapter
• Motor focus can be retrofitted at any time
• Faster cooling down, quicker observing, quicker photographing through fan for the primary mirror
• Steel tube and metal mirror cells for optimal adjustment stability
• Carbon tube for retrofitting - for ultimative transportation

Why does a PHOTON Newtonian stands out?

The optical performance of the mirrors is kept on constantly high level. 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. What is more, a PHOTON Newtonian telescope can grow with your demands:

• A Carbon Tube Upgrade Kit is offered where you can reuse all components of your Newtonian, except the tube.
• Secondary mirrors of different sizes are offered so you can adapt the Newtonian to your individual demands, whether planetary observation or deep-sky imaging with full-size sensor.

The 2" crayford focuser with 1:10 micro transmission

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

The focuser can be retrofitted with a motorfocus system, allowing vibration free and precise focusing for visual observing or astro-imaging.

High-quality primary mirror with 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 more contrasty image. You can instantaneously notice the difference to a standard coating.

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

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 eyepieces are also supplied with light up to the edge of the field stop.

Field correction

Only a good coma corrector turns this Newtonian into a true astrograph. A suitable coma corrector will offer you highest sharpness in the entire field.

Delivery contents

• Photon 12" f/5 Newtonian with tube rings
• 8x50 finder
• 2" Crayford focuser with 1:10 dual speed transmission and reducer to 1.25"
• 2" extension tube 35 mm for easy reaching of the focus when observing
• Dust covers
• 12 V main mirror fan
• Losmandy style dovetail bar
• Collimation manual