70 EDQ-R F5 Quad APO Astrograph

A fast focal ratio 70mm ED Quad APO Astrograph for wide field imaging with with full frame DLSR or CMOS cameras.

The quad design removes the requirement for a separate reducer or field flattener. While this fixes the focal length at 350mm making this a one focal length scope, it also allows for more compactness and portability.

The focuser also includes a 4-axis tilt adjuster which allows you to correct the tilt of your astro camera relative to the telescope to ensure the sensor is square-on to the optical axis. The 4-axis adjustment with locking screws is much easier to use than 3-axis systems because you can align each axis with the camera sensor running parallel to each side. This makes "live" adjustment easier with tools built into your astro imaging software which offer "real-time" adjustment.

• FPL-53 glass for colour free apochromatic performance
• Full-frame coverage
• Improved dual-speed rack and pinion focuser with new type bearings and 29mm total travel for astro imaging.
• 4-axis tilt adjustment.
• Field rotator allowing full 360 degree rotation.
• Easily add a motor focuser such as Altair AAF, Pegasus, iOptron, and others.
• Focuser offers a choice of M63 Female, M54x0.75 Female, or M48 Male rear threads.
• Light Weight of only 3.8kg with X-Ring style light weight tube rings,
• Mounting options. Included 245mm Vixen format dovetail bar and 125mm top-handle with dual Vixen/Arca style dovetail profile.
• Very compact for travel. Only 385mm length with dew-shield folded (430mm with dew-shield extended).
• Altair Astro QC for complete quality assurance from the industry leaders.