***** File DATANOTE.ASC This file comprises notes about the documentation contained in this directory. Inside of the LOGNOTES/ directory, some information regarding the observations is provided as copies (both images and text) of Dr. Mike A'Hearn's Logbook. Instrumentation: NSFCam--A U. Hawaii 256x256 Infrared Array Camera with an In-Sb based chip, with each pixel individually addressable. The camera can be used in a variety of modes including imaging, and grism-based, low-resolution spectroscopy. Coupled with the 3-meter infrared IRTF telescope, the image scales are 0.3, 0.15, and 0.06"/pixel. Calibration scans detailing the percentage transmission as a function of wavenumber for the various SL9 filters shown in FILWHEEL.TIF (e.g., J, K', Spencer 2.3 micron, Brackett Gamma, H2 (1-0), CO (2-0), CO continuum K) can be found in a separate FILTER or FILTER/CVF directory. For the filters Visible ND 2.0, IR ND 2.0 and 0.945 micron only the position is given. Technical details of the camera may be found in a 60-page "NSFCAM User's Guide Version 3 (Jan '96)" printed by the University of Hawaii Institute for Astronomy. The camera also has an on-line web-page devoted to its details (such as filters) at the NASA IRTF URL. The user's guide has been included with this archive as a set of 3 companion postscript files: ugnsfcX.ps that are contained in the DOCUMENT/ directory. Primary Observers: __Name__________ __E-address (96/12/19)___ Dr. Phil Esterle philip.esterle@appl.ge.com Dr. Carey Lisse lisse@astro.umd.edu Dr. Mike A'Hearn ma@astro.umd.edu ______________________________________________________________________ Archive Personnel include the following: Dr. Edwin Grayzeck grayzeck@astro.umd.edu Siobahn Dinyes siobhan@astro.umd.edu Ian Jordan jordan@stsci.edu John Koch jkoch@custer.jhuapl.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ RENAMING OF FITS IMAGE FILES FOR THE IRTF/SL9 DISC The original data was captured on EXAbyte (8 mm) tape and then dumped to a hard disk for processing. Filenames were attached to each datum under the UNIX operating system which was not ISO 9660 compliant. When the files were transferred to CDWO media, new filenames were assigned. The original filename (ORIGNAME) is captured in the FITS header. KEY TO TABLE SYMBOLOGY & FORMAT: The structure of the current filenames falls within a number of basic categories (unfortunately, there are about five different categories since the original images were from 4 different months and several processing stages). The directories in which the filename types occur are usually not listed below, however, if you have a filename and want to see the reasoning behind its construction, referring to the different classes below should help explain the reasoning. ---------------------------------- Special notes for the table below: 1. Characters in square brackets can occur at the specified place (one character at each place), and the possible values are listed within the square brackets. 2. Some directories contain 'ranges' of files. For those, in the list below, if there are ranges indicated by number sequences, the sequences aren't given, but only a single instance in the sequence is used for an example. 3. Typically, the name of the file is a condensation of the original name to conform with 8.3 requirements. A file whose name contains 'flat' or 'flt' is invariably a flat field of some sort. If an image name begins with a number, such as 107 (january 7), or 105 (january 5), 511 (may 11), 512 (may 12), 712 (july 12), 717 (july 17), 718 (july 18), 719 (july 19), it pertains to a date. Files starting with 'lin' are linearity check images. These are only found in January 6th directory. ========================================================================= Table of FITS File Rename Examples. ========================================================================= Original File Name Example Changed to this --------------------------- ------------------------- 12july940240.[ab] ==> 7120240[ab].fit 12july940448.[ab] ==> 7120448[ab].fit 18july940001.[ab] ==> 7180001[ab].fit 19july940001.[ab] ==> 7190001[ab].fit data0001.[ab] ==> 5110001[ab].fit These types of files are found in many directories and the first 3 digits of the new filename represent the date, transformed into a digit-only format, and the 'a' or 'b' extension (target or sky) moved from the extension place to the last character before the dot. If a filter was specified in the original filename (j or k exclusively), then it was included in one of the last two characters of the filename. ``````````````````````````````````````````````````````````````````````````` [jk]mos.fit ==> 106mos[jk].fit Lead 3 digits are month, day, a compressed abbreviation of the original file names' other included information, with a sequence number next (if one occurs), followed by a/b type or filter type on the end. ``````````````````````````````````````````````````````````````````````````` lin4000024.a ==> 1064024a.fit Unnecessary zeros gotten rid of. ``````````````````````````````````````````````````````````````````````````` netflat.fit ==> netflat5.fit Day of january appended to name to make file unique on volume. ```````````````````````````````````````````````````````````````````````````