[67.07] Exposure Time Calculations for Calibrating of Vega and G191-B2B in the Optical and Near-Infrared: Ground-based, Airborne, Balloon-based, and Rocket-borne Experiments

AAS 205th Meeting, 9-13 January 2005
Session 67 Calibration of Post Space Missions: MSX and SNAP
Poster, Tuesday, January 11, 2005, 9:20am-6:30pm, Exhibit Hall

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[67.07] Exposure Time Calculations for Calibrating of Vega and G191-B2B in the Optical and Near-Infrared: Ground-based, Airborne, Balloon-based, and Rocket-borne Experiments

S. Allam (Fermilab), R. C. Bohlin (STScI), S. E. Deustua (AAS), S. M. Kent (Fermilab), M. L. Lampton (UCB), N. Mostek, S. L. Mufson (Indiana U.), M. W. Richmond (RIT), J. A. Smith (LANL), D. L. Tucker (Fermilab), B. E. Woodgate (NASA's GSFC), SNAP Collaboration

For SNAP to succeed the science program requires an accuracy in supernova color determination over the wavelength range 0.35-1.7 microns of 2% in the optical and 3% in the near infrared.

We explore the possibility of the spectrophotometric calibration of standard stars for SNAP mission in the optical and near infrared using 5 different programs. It is important to understand the impact of different calibration programs in the estimated exposure time calculation and the estimated signal to noise (SNR). We have calculated the exposure time required for imaging and spectroscopic observations of spectrophotometric standard stars (Vega and HST standard G191-B2B) using SNAP detectors and filters at specified seeing, airmass, and sky conditions at either ground/space bases.

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