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http://www.stecf.org/documents/isr/ISR_NGST_2002-01.pdf.
http://www.stecf.org/documents/isr/ISR_NGST_2002-01.pdf.
1. How to Piece Together Diffracted Grating Arms for AXAF Flight Data
... The Advanced X-ray Astrophysics Facility's (AXAF) High and Low energy transmission gratings (HETG, LETG) data require new tools and data structures to support x-ray dispersive spectroscopy. ... The sky coordinates, which are referenced to the telescope mirror node and therefore independent of the grating reference node, are only useful for the imaging of zero order and the filtering of grating arm photons. ... For more details on the AXAF grating flight processing software, see: . ...
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Ссылки http://www.stecf.org/conferences/adass/adassVII/alexova.html -- 13.3 Кб -- 12.06.2006
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2. NICMOS Data Calibration and Analysis
Next: The STScI NICMOS Calibration Up: No Title Previous: CONICA: The high resolution . The STScI NICMOS Calibration Pipeline . Introduction . ... Dark Current Subtraction . ... Input Data . ... Scalar Background Subtraction . 2-D Background Subtraction . ... Status and Goals of the NICMOS Calibration Plan . ... Photometry . ... Photometric Performance of NICMOS . ... NICMOS Photometry. ... ST-ECF Grism Spectrum Software for NICMOS Grism Data . ... Analysis . ... STScI NICMOS Software . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node8.html -- 13.2 Кб -- 12.06.2006
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3. IRAF/STECF 2-D spectrum point source / background decomposition package
IRAF/STECF 2-D spectrum point source / background decomposition package . ... The general problem is one of spectral decomposition - of separating the spectra of the point sources from the background. ... The STECF IRAF layered package "specres" provides two tasks to extract point source spectra from 2-D images (either longslit, multislit or cross-dispersed) and decompose the full background over the image. ... A Point Source Function spectrum image is required as a 2-D spectrum. ...
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Ссылки http://www.stecf.org/software/IRAFtools/stecf-iraf/specres/ -- 16.5 Кб -- 08.06.2006
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