Boren-Simon 8" f/2.8 PowerNewton Astrograph - Carbon Tube

With the Boren-Simon PowerNewtonian, you can take extremely deep astrophotographs within just one night.

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!

The advantages of the 8" f/2.8 PowerNewtonian:

♦ 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 790 mm, weight of 7.6 kg - can still be carried by portable mounts
♦ Back Focus 66.85 mm starting from the M48 thread of the ASA reducer-corrector - also suitable for OAG
♦ Fully illuminated and corrected field for APS-C format sensors
♦ Only 37% obstruction - suited for visual use

The advantages of the 8" 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 74 mm, which reduces obstruction. More features and advantages:

♦ fantastic stability at an extremely short overall length
♦ without reducer/corrector 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 8" f/2.8 Astrograph:

The backfocus of the 8" 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 800 mm focal length.

♦ 8" Astrograph with 200 mm aperture and Carbon tube
♦ TS UNCN2 focuser with 1:10 dual speed
♦ 4-Element ED Reducer and corrector
♦ tube rings
♦ 8x50 finderscope