Due to the professional ASA reducer/corrector, you can enjoy the amazing performance with great sharpness and no reflection problems. You can gather enough raw material for the truly ultimate photograph of an object in one night!

• Short exposure times at f/2.8 - perfect for DSLR cameras without cooling
• Moderate exposure times when using narrowband filters
• Very good field correction thanks to the ASA corrector/reducer
• High mechanical stability due to the carbon tube
• Total length of only 1100 mm, weight of 18 kg - can still be carried by smaller mounts
• Back Focus 65 mm starting from the T2-thread - also suitable for OAG
• Fully illuminated and corrected field for APS-C format sensors
• Only 34% obstruction - suited for visual use

The advantages of the 10" f/2.8 Astrograph against Celestrons Hyperstar system

• The camera sits at the side of the tube, not in the middle and in front of the instrument. You don´t suffer from the waste heat of the camera.
• The system itself is open and cools down faster and is also less affected by dew problems.
• The Astrograph offers a larger working distance than the Hyperstar and therefore you can use CCD cameras and filter wheels.

The TS UNCN2 V-Power focuser:

One of the central parts of the TS PowerNewtonians is the modern UNCN2 focuser. The focuser can carry larger cameras and payloads without flexion problems. Only by using that low profile focuser we were able to modify the focus position.
Even at f/2.8, we can still use a secondary mirror of only 88 mm, which reduces obstruction. More features and advantages:

• fantastic stability at an extremely short overall length
• generous back focus of 65 mm - enough space for all common coma correctors and the TSOAG 9 off-axis guider
• precise 1:10 dual speed - for perfectly focused images
• Motorfocus optional - with TSACUMOTORFOK

Illumination and correction of the 10" f/2.8 Astrograph:

The backfocus of the 12" f/2.8 PowerNewtonian is 65 mm. The popular Kodak KAF8300 sensor is being fully illuminated and corrected. even DSLR cameras with the APS-C sensors can be used with the instrument and by using a flatfield correction you get rid of any vignetting left.

Change the telescope from superfast f/2.8 to high resolution f/4 within minutes:

With the optional TSGPU Aplanatic 4-element Coma Corrector you can change the Boren-Simon F2.8 superfast Newtonian astrograph into a high resolution F4 astrograph with a very good illumination and 1200 mm focal length.

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Scope of Delivery:

•  12" Astrograph with 305 mm aperture and Carbon tube
•  TS UNCN2 focuser with 1:10 dual speed
•  4-Element ED Reducer and corrector
•  tube rings
•  8x50 finderscope