Imaging Dall Kirkham (iDK) Quartz Series Telescopes



The Imaging Dall Kirkham (iDK) Series is a premium line of F6.7 wide-field quartz optics astrographs designed to provide a highly-corrected field of view for serious CCD imaging. The outstanding performance of the iDK Series is made possible through the convergence of modern design, careful selection of materials (quartz optics), state-of-the-art manufacturing, and precise assembly.  iDK systems are in use around the world producing stunning images of our Universe.


A permanently aligned integral field corrector eliminates coma, astigmatism, and field curvature across a flat field of view up to 70mm in diameter (50mm for the 10″ iDK). When combined with the extensive use of carbon fiber, CNC-machined components, and optical grade fused quartz optics, an iDK Series astrograph is a potent, versatile imaging telescope capable of serious scientific and astroimaging performance. 

All AG Optical Systems iDK telescopes use optics crafted by master optician Terry Ostahowski.  Ostahowski Optics has been producing professional-grade optics for decades and is recognized for their commitment to quality and customer service.


The Imaging Dall Kirkham series of imaging telescopes offer a very versatile F6.7 focal ratio. This focal ratio provides a generous field of view to capture thousands of imaging objects while offering the image scale to frame moderate to small size objects nicely on your CCD sensor.

Dollar for dollar AG Optical Systems is the leader in high-performance imaging systems.  Backed by outstanding customer support our astrographs have features that cost extra or are not even available in competing systems,  For example, in addition to providing primary mirror and secondary mirror collimation adjustments, every iDK has quartz optics figured by a master optician.  AG Optical Systems Imaging Dall Kirkham telescopes offer outstanding optical performance that you can rely on night after night.

M101 Imaged at F6.7 using a 17″ iDK Astrograph
Courtesy of Dan W., Oklahoma