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Category Archives: Astroengineering
Cryogenic (SWIR; 0.7 – 2.5 µm) infrared cameras are specialized. For astronomical purposes thermal radiation from a room-temperature lens would swamp the signal beyond 1.5 µm. To deal with this signal such cameras at low temperatures (say 120 Kelvin). The … Continue reading
I’m trying to make a tool that allows the user to compute anything they ever wanted to know about spectrographs. It’s here: DESIGN YOUR OWN SPECTROGRAPH: http://nickkonidaris.github.io/SpectrographCalculator/ The default parameters are for DBSP on the Hale 200-inch telescope. The parameters … Continue reading
The anamorphic factor is something that must be understood and manipulated in spectrographs operating off Littrow. I describe the anamorphic factor through a series of videos. Continue reading
Chimera 2, a new high-speed and wide-field imager for Palomar achieved first light! Gregg Hallinan is the PI, I’m proud to have performed the lens-design for this instrument, all optics are off-the-shelf, so the real challenge was the imaginative way … Continue reading
Based on Japanese Patent J2001, 253050, A, I constructed an approximate optical model for the Canon EF f/2.0L 200-mm lens. I can’t know for sure if this model matches the constructed hardware, but the model is a good starting point. … Continue reading
A new MOSFIRE data reduction pipeline has been released. See the release notes.