Early Observations with the ACS Grism

Details Early Observations with the ACS Grism Early Observations with the ACS Grism

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.6204g&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #62.04; Bulletin of the American Astronomical Society, Vol. 34, p.745

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The Advanced Camera for Surveys (ACS) was installed aboard the Hubble Space Telescope in March 2002. The Wide Field Channel (WFC) of the ACS covers a field of view of 3.4 x 3.4 arcmin and is equipped with a grism, allowing for slitless multi-object optical spectroscopy over the entire field of view covering the spectral range 550 -- 1100 nm at R ~ 100. The grism may also be used with the High Resolution Channel (HRC) on ACS which covers a field of view of 26 x 29 arcsec. We will present early images taken with the grism on the ACS during orbital verification tests designed to calibrate its dispersion, throughput, flat field, and fringing properties. We will discuss the standard procedures for acquiring, reducing, and extracting grism spectra. We will also highlight science applications for the ACS grism, including the detection of high redshift (z > 4) Lyα emission-line objects. This work was supported by a NASA contract and a NASA grant.

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