Author Archives: Nick Konidaris

Cryogenic Materials

Cryogenic lens designers of large optics need to know what materials are available and in what size. As of 19-Sept-2019 I’ve identified the following materials: Up to 200 mm in diameter with good (> 90% in 10 mm samples) throughput … Continue reading

Posted in Uncategorized | Leave a comment

Infrared Camera Design

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

Posted in Astroengineering | Tagged , | Leave a comment


Recently, with the help of postdoc Decker French we have been looking into the design of a new rapid-response spectrograph and imager. We lovingly call it R2S2I or the “Rapid Response Swope Spectrograph and Imager”. The goal of R2S2I is … Continue reading

Posted in Uncategorized | Tagged , , | Leave a comment

Spectrograph 0th-Order Calculations

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: The default parameters are for DBSP on the Hale 200-inch telescope. The parameters … Continue reading

Posted in Astroengineering | Tagged , | Leave a comment

Classical and β Anamorphism in Spectrographs

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

Posted in Astroengineering, Lens Design | Tagged , | Leave a comment

New code repository

I’ve started a new github repository for the SED Machine control. The code is a series of python servers that communicate via XML RPC. A second “Konidaris python” repository was created. The KPY repository includes tools for atmospheric absorption, mirror … Continue reading

Posted in SED Machine Observations | Leave a comment

Chimera 2 first light

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

Posted in Astroengineering, Chimera II | Tagged , | Leave a comment

TMT Science Forum

I’m attending the TMT Science forum in Tucson next week! This will be a great opportunity to talk about my work on TMT! Follow us on #tmtsf14. IRMS I gave a presentation on the observational capability and technical aspects of … Continue reading

Posted in Conferences | Leave a comment

SPIE Astronomical Instrumentation 2014

I’m attending the SPIE astronomical instrumentation meeting in Montreal (from June 22 – 28). This is a great time to get together with colleagues from TMT, and discuss SED Machine.

Posted in Conferences | Tagged | Leave a comment

Canon f/2.0 200-mm ZEMAX model

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

Posted in Lens Design | Tagged , , | Leave a comment