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17 September 2009 Cryogenic spectral performance of bandpass filters for the NIRCam instrument
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The Bandpass Filters in the NIRCam instrument are required to have high throughput in bandpass spectral region and excellent out-of-band blocking over the entire region of detector spectral response. The high throughput is needed for the instrument to have high sensitivity for detecting distant galaxies, and the out-of-band blocking is needed for accurate calibration on James Webb Space Telescope. The operating temperature of the instrument is at cryogenic temperature from 32 Kelvin to 39.5 Kelvin. We have performed spectral measurement of NIRCam bandpass filters at cryogenic temperature after three cryo-to-ambient cycles. We will report the experiment and results in this paper. This work was performed and funded by NASA Goddard Space Flight Center under Prime Contract NAS5-02105.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yalan Mao, David Harrison, Todd Richardson, Bailey Schulz, Dale Taylor, Lynn W. Huff, Scott Horner, Douglas Kelly, and Marcia J. Rieke "Cryogenic spectral performance of bandpass filters for the NIRCam instrument", Proc. SPIE 7439, Astronomical and Space Optical Systems, 74391D (17 September 2009);


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