Characterizing Temperature Variations in the Large Synoptic Survey Telescope Camera
Abstract/Contents
- Abstract
- We have measured how the temperature varies on a science raft for the Large Synoptic Survey Telescope (LSST) Camera, and have made preparations to repeat this test on the full Camera focal plane. Such tests are important in order to ensure that the LSST Camera behaves as expected in response to temperature changes, and in particular that spurious spatial patterns are not introduced into near-IR observations due to a spatially varying temperature profile. We describe first the construction of a Flat Field Projector that will be used to conduct a wide array of tests on the LSST Camera Focal Plane, including a test of temperature variation. Then we proceed to describe a pilot version of this test, in which a single LSST science raft was illuminated with flat fields at several temperatures and wavelengths. After developing several methods of removing fringe artifacts from these images we calculate the temperature variation, and find that the variation of the spatial pattern of temperature on a single raft is less than 0.25K when the bulk temperature is changed 10K, somewhat better than the specification of 0.5K variation.
Description
Type of resource | text |
---|---|
Date created | May 19, 2018 |
Creators/Contributors
Author | Rosenberg, Erik |
---|---|
Degree granting institution | Stanford University, Department of Physics |
Primary advisor | Roodman, Aaron J. |
Advisor | Burchat, Patricia |
Subjects
Subject | LSST |
---|---|
Subject | Large Synoptic Survey Telecope |
Subject | Astronomy |
Subject | Astronomical Instrumentation |
Subject | CCD |
Genre | Thesis |
Bibliographic information
Access conditions
- Use and reproduction
- User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Preferred citation
- Preferred Citation
- Rosenberg, Erik. (2018). Characterizing Temperature Variations in the Large Synoptic Survey Telescope. Stanford Digital Repository. Available at: https://purl.stanford.edu/fz609rc0845
Collection
Undergraduate Theses, Department of Physics
View other items in this collection in SearchWorksContact information
- Contact
- erikrosenberg@stanford.edu
Also listed in
Loading usage metrics...