WISE Software Interface Specification; BvB_rex09; (WSDC D-I135) SIS Written by Howard McCallon, version 2.0 02/12/2010 Interface Name: BvB (Band-vs-Band file) Type of Interface: ASCII file in IPAC table format Read By: Off-line Analysis Program (TBS) ..................... J.W. Fowler/ H.L. McCallon Written By: PRex/SFPRex (Single-Frame Position REconstruction) .. H.L. McCallon/ J.W. Fowler DESCRIPTION: Note that this version of BvB is a near-total rewrite of the previous version, based on lessons learned from processing flight data. Due to sensitivity to distortion errors, it was decided to go back to the basic SDEX data without any processing, aside from the pair matching. Starting with non-distortion-corrected positions, the best available distortion models at the time of the analysis can be applied "on the fly". One BvB file is generated for each frameset. This file includes the data needed to fit direct band-to-band differences. Each record includes single-band extraction coordinates, uncertainties & magnitudes for a matched pair of sources. For each source the data remains as it was received from SDEX with no distortion corrections made. Each record contains the data for the shorter-wavelength band source, followed by that of the longer-wavelength source. The source matching is from mergex in SFPRex. Note that "NSrcS" and "NSrcL" refer to SDEX record numbers (excluding headers), not source ID's. Key words in the headers include band-to-band pair counts and the band-frame position solutions from SFPRex. The first column specifies which of the six possible short-vs-long wavelength band pairings (W1v2, W1v3, W1v4, W2v3, W2v4 or W3v4) that record contains. The intent is that a large set of BvB files be used to compute more accurate band-to-band conversions, such that given the frame parameters associated with a given band the corresponding parameters for any longer-wavelength band can be easily computed. In addition this file is intended to support the generation of pseudo RvB files which can then be used to fit for differential distortion between bands. Will likely be the best approach to obtain W4 distortion. EXAMPLE: \ Band-vs-Band (BvB) file (written by SFPRex ver 1.90 B00211 on 12-02-10 at 9:23:59) \ \ KEY WORDS: \NW1VW2 = 1149 Number of W1 vs W2 pairs \NW1VW3 = 156 Number of W1 vs W3 pairs \NW1VW4 = 5 Number of W1 vs W4 pairs \NW2VW3 = 190 Number of W2 vs W3 pairs \NW2VW4 = 19 Number of W2 vs W4 pairs \NW3VW4 = 35 Number of W3 vs W4 pairs \ *** Band Frame W1 *** \BF1XPIV = 508.5000000000 /X position of W1 frame center pivot (pix) \BF1YPIV = 508.5000000000 /Y position of W1 frame center pivot (pix) \BF1RA = 25.5536271477 /RA of W1 band frame center (deg) \BF1DEC = 62.8788291652 /DEC of W1 band frame center (deg) \BF1PA = 147.6686941138 /PA of W1 band frame (deg) \BF1SFX = -0.0007653866 /X scale factor of W1 band frame (deg/pix) \BF1SFY = 0.0007615008 /Y scale factor of W1 band frame (deg/pix) \SGBF1RA = 0.0634146312 /Sigma RA of W1 band frame center (asec) \SGBF1DEC= 0.0591977251 /Sigma DEC of W1 band frame center (asec) \CSGBF1RD= 0.0031468467 /Co-sigma RA:DEC of W1 band frame center (asec) \SGBF1PA = 10.6923166471 /Sigma PA of W1 band frame center (asec) \SGBF1SFX= 0.000000055361351 /Sigma X scale factor of W1 band frame (deg/pix) \SGBF1SFY= 0.000000053650535 /Sigma Y scale factor of W1 band frame (deg/pix) \ *** Band Frame W2 *** \BF2XPIV = 508.5000000000 /X position of W2 frame center pivot (pix) \BF2YPIV = 508.5000000000 /Y position of W2 frame center pivot (pix) \BF2RA = 25.5543883971 /RA of W2 band frame center (deg) \BF2DEC = 62.8785143971 /DEC of W2 band frame center (deg) \BF2PA = 147.9096466890 /PA of W2 band frame (deg) \BF2SFX = -0.0007702695 /X scale factor of W2 band frame (deg/pix) \BF2SFY = 0.0007614793 /Y scale factor of W2 band frame (deg/pix) \SGBF2RA = 0.0745886902 /Sigma RA of W2 band frame center (asec) \SGBF2DEC= 0.0714658611 /Sigma DEC of W2 band frame center (asec) \CSGBF2RD= -0.0015337970 /Co-sigma RA:DEC of W2 band frame center (asec) \SGBF2PA = 12.5134538120 /Sigma PA of W2 band frame center (asec) \SGBF2SFX= 0.000000065804010 /Sigma X scale factor of W2 band frame (deg/pix) \SGBF2SFY= 0.000000062048142 /Sigma Y scale factor of W2 band frame (deg/pix) \ *** Band Frame W3 *** \BF3XPIV = 508.5000000000 /X position of W3 frame center pivot (pix) \BF3YPIV = 508.5000000000 /Y position of W3 frame center pivot (pix) \BF3RA = 25.5550837492 /RA of W3 band frame center (deg) \BF3DEC = 62.8778462909 /DEC of W3 band frame center (deg) \BF3PA = 148.1929911908 /PA of W3 band frame (deg) \BF3SFX = -0.0007657179 /X scale factor of W3 band frame (deg/pix) \BF3SFY = 0.0007653337 /Y scale factor of W3 band frame (deg/pix) \SGBF3RA = 0.4490944754 /Sigma RA of W3 band frame center (asec) \SGBF3DEC= 0.4955632191 /Sigma DEC of W3 band frame center (asec) \CSGBF3RD= -0.0572622754 /Co-sigma RA:DEC of W3 band frame center (asec) \SGBF3PA = 40.8185856335 /Sigma PA of W3 band frame center (asec) \SGBF3SFX= 0.000000078740307 /Sigma X scale factor of W3 band frame (deg/pix) \SGBF3SFY= 0.000000078208622 /Sigma Y scale factor of W3 band frame (deg/pix) \ *** Band Frame W4 *** \BF4XPIV = 254.5000000000 /X position of W4 frame center pivot (pix) \BF4YPIV = 254.5000000000 /Y position of W4 frame center pivot (pix) \BF4RA = 25.5545838436 /RA of W4 band frame center (deg) \BF4DEC = 62.8793734694 /DEC of W4 band frame center (deg) \BF4PA = 147.7903226626 /PA of W4 band frame (deg) \BF4SFX = -0.0015344634 /X scale factor of W4 band frame (deg/pix) \BF4SFY = 0.0015384569 /Y scale factor of W4 band frame (deg/pix) \SGBF4RA = 0.4513212487 /Sigma RA of W4 band frame center (asec) \SGBF4DEC= 0.4974907236 /Sigma DEC of W4 band frame center (asec) \CSGBF4RD= -0.0570470579 /Co-sigma RA:DEC of W4 band frame center (asec) \SGBF4PA = 41.5338895644 /Sigma PA of W4 band frame center (asec) \SGBF4SFX= 0.000000145178708 /Sigma X scale factor of W4 band frame (deg/pix) \SGBF4SFY= 0.000000144736831 /Sigma Y scale factor of W4 band frame (deg/pix) \ \ COLUMN HEADER DESCRIPTIONS: \ bvb = b2b descriptor [1st# = short (S) wavelength' band#; 2nd# = long (L) wavelength band#] \ ig = merge group number assigned by SFPRex \ NSrcS = record# of source in short-wavelength SDEX \ NSrcL = record# of source in long-wavelength SDEX \ xfeS = X pos of extraction in short-wavelength band-frame (pix) [no distortion cor] \ yfeS = Y pos of extraction in short-wavelength band-frame (pix) [no distortion cor] \ sigxuS = X sigma of short-wavelength extraction in U-system (asec) \ sigyuS = Y sigma of short-wavelength extraction in U-system (asec) \ csgxyuS = XY co-sigma of short-wavelength extraction in U-system (asec) \ mageS = short-wavelength extraction magnitude (mag) [from SDEX] \ xfeL = X pos of extraction in long-wavelength band-frame (pix) [no distortion cor] \ yfeL = Y pos of extraction in long-wavelength band-frame (pix) [no distortion cor] \ sigxuL = X sigma of long-wavelength extraction in U-system (asec) \ sigyuL = Y sigma of long-wavelength extraction in U-system (asec) \ csgxyuL = XY co-sigma of long-wavelength extraction in U-system (asec) \ mageL = long-wavelength extraction magnitude (mag) [from SDEX] \ frmID = Unique frame ID \ |bvb |ig |NSrcS |NSrcL |xfeS |yfeS |sigxuS |sigyuS |csgxyuS |mageS |xfeL |yfeL |sigxuL |sigyuL |csgxyuL |mageL |frmID | |c |i |i |i |r |r |r |r |r |r |r |r |r |r |r |r |c | | | | | |pix |pix |asec |asec |asec |mag |pix |pix |asec |asec |asec |mag | | |null|null |null |null |null |null |null |null |null |null |null |null |null |null |null |null |null | W1v2 1 1 5 253.4600 446.2120 0.5800 0.5760 0.0204 7.1560 254.6260 446.5670 1.1480 1.0620 -0.0250 7.3370 01622b224 W1v2 2 2 15 648.0080 288.9380 0.7040 0.6840 0.0077 7.4000 646.1650 287.5960 1.2700 1.1200 0.0216 7.6160 01622b224 W1v2 3 3 16 487.9500 989.3220 0.5340 0.5340 -0.0100 7.5140 490.1670 988.8270 1.2040 0.9780 0.0133 7.6640 01622b224