Welcome to the BTC (Big Throughput Camera) Clearinghouse. This web page is intended to facilitate cooperation and collaboration among users of the BTC on the CTIO 4-meter telescope. E-mail comments or submissions (preferably in HTML) for this page to hall[at]astro.utoronto.ca; send technical questions about the BTC to garyb[at]astro.lsa.umich.edu .

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Contents: Observing Planning & Preparation | Data Reduction Companion Page: Deep/Wide-Field Surveys and Big Optical/Near-IR Cameras

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Observing Planning and Preparation Tools:

• BTC Home Page
• BTC Technical Home Page
• CTIO Mosaic Imaging Page
• CTIO 4-m Victor M. Blanco Telescope Homepage
• CTIO Ephemera: 1998 | 1999
• btcdither.cl -- IRAF script to help visualize a dithering pattern
• WISP: the CFHT Wide-field Imaging Symbiotic Program -- a search for solar system objects with any and all wide-field imaging data
• SKYVIEW
• HEASARC W3browse
• HI Column Density Calculator: telnet einline.harvard.edu; login einline; at menu type "tools" and then "colden" (format hh mm ss +-dd mm ss).
• Astrometric Standard Fields -- available on the observer's console at CTIO
• Predicted Star Counts at given (l,b) from the Bahcall & Soneira model -- IRAF task and documentation. John Bahcall also has a program available to do this.
• COBE/IRAS Reddening Maps (Schlegel, Finkbeiner, & Davis): Berkeley | Princeton

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Data Reduction Tools:

• MOSRED IRAF package written by steve[at]noao.edu (Steve Heathcoate). IRAF V2.11 Version now available as well as IRAF V2.10 Version.
• Draft IRAF Reduction System for CCD Mosaics
• btc_gainflip.cl -- IRAF script to multiply BTC images by their gains and put NE at upper left
• PHAT 2.11 (Pat Hall's Add-on Tasks) for IRAF Version 2.11 + FITS kernel. This package includes a number of tasks tailored for BTC reductions. Requires PHIIRS 2.11 (Pat Hall's Infrared Imaging Reduction Software) to run.
• Photometric Sequences for Wide-field Surveys, including Faint UBVRI Standard Fields courtesy Brian Boyle et al.
• USNO Astrometric Catalogues | USNO-A2.0 Catalog
• Search USNO-A1.0 at CDS or at Lowell or at ESO/ST-ECF
• Astrographic Catalogue AC2000 of 4.61 million stars to magnitude 11
• FINDER/ASTRO astrometry program

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Dr. Pat Hall -- Astronomer -- pathall[at]astro.princeton.edu