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"Within
a temperature range of 10°C we see no measurable change in
focus. Also, there was no change in focus as a function of telescope
position." |
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- Michael Schwartz,
Tenagra Observatories, 16" f3.75 Dream Astrograph
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25"
Dream Hypergraphs
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. |
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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. |
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The zeroDELTA™ mirrors are tested in their final
athermal carbon fiber mirror mounts, in Dream's 5m vertical test
tower. |
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OTA diameter - OD |
length |
focal length |
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30" |
67.5" |
1905mm - f2.95 |
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secondary |
weight - pounds |
single unit pricing |
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9.25" |
<170 |
contact Dream |
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IMX461 101Mp CMOS detector: 3.76µm pixels, 11656 x
8742, 55mm image circle. |
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Field Of View: 60.2' x 80.3' (1.34 deg²) |
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Arc-seconds/pixel: 0.41 |
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These dedicated optical systems are optimized
for 100% illumination of the given detector. The Dream Hypergraphs
come with 90mm of back focus. |
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OTA diameter - OD |
length |
focal length |
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30" |
67.5" |
1905mm - f2.95 |
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secondary |
weight - pounds |
single unit pricing |
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9.6" |
<175 |
contact Dream |
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IMX411 151Mp CMOS detector: 3.76µm pixels, 14192 x
10640, 66.7mm image circle. |
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Field Of View: 73.4' x 98.0' (2.0 deg²) |
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Arc-seconds/pixel: 0.41 |
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OTA diameter - OD |
length |
focal length |
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30" |
55" |
1525mm - f2.4 |
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satellite debris tracking |
space domain awareness |
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space domain awareness |
space situational awareness |
NASA NEO search & recovery |
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secondary |
weight - pounds |
single unit pricing |
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11.2" |
<170 |
contact Dream |
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The latest CMOS detectors have 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 related to the optical systems. 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" apertures, 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. |
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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
& producing fast optical systems since 2003. Our lead optical
engineer has four decades of experience with fast systems. |
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pricing, availability and
specifications subject to change without notice |
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Copyright
© 2003-2023 Dream All Rights Reserved. |
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space domain awareness (SDA),
space Situational Awareness (SSA), Ball Aerospace, Lockheed martin,
Boeing space, Airbus defence & space, planewave instruments,
NASA JPL, NASA goddard, lightweight telescope, lightweight precision
optics, lightweight precision mirrors |
