Dr
Thomas Rauch
(Institute for Astronomy and Astrophysics, Kepler Center for Astro and Particle Physics, Eberhard Karls University, Tübingen, Germany)
4/19/12, 1:00 PM
Intercalibration between systems
Theoretical spectral energy distributions (SEDs) of white dwarfs provide a powerful tool for cross-calibration and sensitivity control of instruments from the far infrared to the X-ray energy range.
Such SEDs can be calculated from fully metal-line blanketed non-LTE model-atmospheres that are e.g. computed by the Tübingen Non-LTE Model-Atmosphere Package (TMAP) that has arrived at a high...
Dr
Sara Heap
(NASA's Goddard Space Flight Center)
4/19/12, 2:00 PM
Large Surveys and Missions (UV/Optical/NIR)
Paper
Hubble’s Next Generation Spectral Library (NGSL) consists of R~1000 spectra of 374 stars of assorted temperature, gravity, and metallicity. Each spectrum covers the wavelength range, 0.18-1.00 μ. The library can be viewed and/or downloaded from the website, http://archive.stsci.edu/prepds/stisngsl/. Stars in the NGSL are now being used as absolute flux standards at ground-based observatories....
Dr
Mary Elizabeth Kaiser
(Johns Hopkins University)
4/19/12, 2:30 PM
Paper
ACCESS, Absolute Color Calibration Experiment for Standard Stars, is a
series of rocket-borne sub-orbital missions and ground-based experiments
that will enable improvements in the precision of the astrophysical flux
scale through the transfer of absolute laboratory detector standards from
the National Institute of Standards and Technology (NIST) to a network of
stellar standards with a...
Dr
Sean Carey
(Spitzer Science Center / IPAC)
4/19/12, 2:50 PM
Paper
We have made several significant improvements to the final cryogenic calibration of the IRAC instrument aboard the Spitzer Space Telescope. The final calibration uses the ensemble of calibration data collected over the five-plus years of the cryogenic mission and includes knowledge obtained on intrinsic photometric variations. Photometric variation with location on the array and phase of...
Dr
Nicolas Gruel
(Centro de Estudios de Física del Cosmos de Aragón (ceFca))
4/19/12, 3:10 PM
Paper
J-PAS survey consists of an 8000 square degree photometric sky survey with a set of 52 narrow-band and 2 broad-band filters. The main goal is to produce a photo-redshift catalog of ~15 millions red, early-type galaxies with a precision σ(z)~0.003(1+z) to measure the Baryonic Acoustic Oscillation (BAO).Such precision requires specific care in the photometric calibration survey. This...