Habitable-Zone Planet Finder: improved flux image generation algorithms for H2RG up-the-ramp data
Abstract
Noise and stability of current state of the art near-infrared (NIR) array detectors are still substantially worse than optical science grade CCDs used in astronomy. Obtaining the maximum signal-to-noise ratio in flux image is important for many NIR instruments, as is stable well understood data reduction and extraction. The Habitable- zone Planet Finder (HPF) is a near-infrared ultra stable precision radial velocity (RV) spectrograph commissioned on 10-m Hobby-Eberly Telescope (HET), McDonald Observatory, Texas, USA. HPF uses a Teledyne H2RG array detector. In order to achieve the high-precision (~ 1 m/s) RV measurements from the NIR spectrum of HPF's science target stars, it is vital to maximize the signal-to-noise ratio and to accurately propagate the uncertainties. Here we present the algorithms we have developed to significantly improve the quality of flux images calculated from the up-the-ramp readout mode of H2RG. The algorithms in the tool HxRGproc presented in this manuscript are used for HPF's bias noise removal, non-linearity correction, cosmic ray correction, slope/flux and variance image calculation.
Additional Information
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was partially supported by the funding from The Center for Exoplanet and Habitable Worlds. The Center for Exoplanet and Habitable Worlds is supported by The Pennsylvania State University, The Eberly College of Science, and The Pennsylvania Space Grant Consortium. We acknowledge support from NSF grants, AST1006676, AST1126413, AST1310885, and the NASA Astrobiology Institute (NNA09DA76A) in our pursuit of precision radial velocities in NIR, and support from the Heising-Simons Foundation. Computations for this research were performed on the Pennsylvania State Universitys Institute for CyberScience Advanced CyberIn-frastructure (ICS-ACI).Attached Files
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Additional details
- Eprint ID
- 91557
- Resolver ID
- CaltechAUTHORS:20181207-083716755
- Center for Exoplanets and Habitable Worlds
- Eberly College of Science
- Pennsylvania State University
- Pennsylvania Space Grant Consortium
- AST-1006676
- NSF
- AST-1126413
- NSF
- AST-1310885
- NSF
- NNA09DA76A
- NASA
- Heising-Simons Foundation
- Created
-
2018-12-08Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 10709