MULTISPEC: Crowded-Field Slitless Spectroscopy with HST
Publication date: 02 May 2005
Journal: STIS Instrument Science Report
Volume: 2
Year: 2005
I have developed an automated slitless-spectrum extraction software package that allows for the simultaneous obtention of hundreds of point-source spectra within a field. MULTISPEC is an spectroscopic analog to crowded-field PSF-fitting photometry packages such as DAOPHOT or HSTPHOT in the sense that it fits spatial profiles to the spectrum of each star simultaneously. The code has been written in IDL, and implemented and tested for the STIS NUV-MAMA objective-prism. It could be rather easily adapted to observations with other spectral elements with slitless capabilities (objective prisms, grisms, and gratings) in HST or in other telescopes. I discuss the techniques employed and I show the first results obtained with MULTISPEC.
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