Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array · HackerPapers discussions

Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array — mentioned by gammarator

Thu, 16 May 2024 00:53:44 GMT

See the third page of https://arxiv.org/abs/1401.5473

Paper and discussion history. A mention is not an endorsement.

Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array — mentioned by gammarator

Thu, 16 May 2024 00:51:59 GMT

That’s exactly why they are using commercial lenses! Canon’s modern AR coatings are so good that the performance for low-surface brightness imaging beats larger-aperture telescopes which can gather more light but scatter it around the image. See the third page of https://arxiv.org/abs/1401.5473

Paper and discussion history. A mention is not an endorsement.

Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array — mentioned by perihelions

Wed, 15 May 2024 18:17:35 GMT

- "Each of the eight lenses in the array is connected to a Santa Barbara Imaging Group (SBIG) STF-8300M CCD camera. These cameras have Kodak KAF-8300 CCD detectors, which have a 3326 × 2504 pixel format." https://arxiv.org/abs/1401.5473 ("Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array")

Paper and discussion history. A mention is not an endorsement.

Ultra Low Surface Brightness Imaging with the Dragonfly Telephoto Array — mentioned by acqq

Thu, 28 Jan 2016 23:08:28 GMT

The paper by Dragonfly designers: http://arxiv.org/abs/1401.5473 It's not "just" the off-the shelf lenses and cameras, although the lenses are really the crucial part and they are very cleverly used, achieving up to then never achieved low light scattering. At the time it used only 8 lenses, the telescope had weight of more than 100 kg. Here's the robotic mount they used then: http://www.bisque.com/sc/pages/ParamountMEII.aspx The paper with the first results from the Dragonfly: http://iopscience.iop.org/article/10.1088/2041-8205/782/2/L2...

Paper and discussion history. A mention is not an endorsement.