"I went to bed at about 10PM and I let it run all night without focusing. I blinked through the images and focus did not change. Also, I did all of my other images by letting it run through the night without focusing."

- Mel Helm, Sierra Remote Observatories, 16" f3.75 Dream Astrograph owner. 

32" f2.4 Dream Hypergraph

The only athermal instruments in the world that use such a high percentage of carbon fiber (95% of the weight of the telescope structures without optics) and mates those low-mass, high stiffness athermal structures with highly engineered, lightweight zeroDELTA mirrors. The entire system is optimized from the ground up for cutting edge installed performance, eliminating countless areas of performance loss. These are truly modern instruments with unrivaled consistent, long-term installed performance and the lowest possible maintenance.

Click either photo (left or right) to watch a video about the interferometry technology developed for JWST and funded by NASA. Dream uses this technology to finish its world-class lightweight mirrors in house.

The zeroDELTA mirrors are tested in their final athermal carbon fiber mirror mounts, in Dream's 5m vertical test tower.

OTA diameter - OD


focal length



1955mm - f2.4
space domain awareness satellite debris tracking

815mm CA
space domain awareness space situational awareness NASA NEO search & recovery


weight - pounds

single unit pricing



contact Dream

IMX411 151Mp CMOS detector: 3.76µm pixels, 14192 x 10640, 66.7mm image circle.
Field Of View: 70.2' x 93.6' (1.825 deg²)
Arc-seconds/pixel: 0.4
These dedicated optical systems are optimized for 100% illumination of the given detector. The Dream Hypergraphs come with 90mm of back focus. 

The latest CMOS detectors have much, much smaller pixels (3.76µm versus the typical 9µm pixels of the previous generation of detectors). Dream and our existing customers don't need to upgrade anything. Our optical instruments have always achieved higher performance and we've always designed closer to the diffraction limit. In 2020 alone we designed more than a half a dozen optical systems ranging from 16" to 25", with f-ratios from f2.95 to as fast as f1.35 and for sensors from as small as 24mm x 36mm to as large as 95mm x 95mm.

Roughly 90% of what Dream designs & produces is custom. Contact us to determine whether your project can use an existing design, a slightly modified existing design or requires something completely custom. We've been designing fast optical systems since 2003. Our lead optical engineer has four decades of experience with fast systems.

Contact Dream about your project

Dream Astrographs & Hypergraphs




R-C Cassegrains

pricing, availability and specifications subject to change without notice

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