groview -- Display BATSE, COMPTEL and EGRET viewing angles for user selected range of viewing.
groview all_VPs vp1 vp2 data_dir raSource decSource incThresh show_OSSE show_EGRET show_COMPTEL show_BATSE
This is a tool to search the CGRO viewing period file for a given source location, and, return BATSE, COMPTEL and EGRET viewing angles for user selected range of viewing periods. User inputs source position and VP range of interest.
The file, "vp_list.fits", available from <ftp://cossc.gsfc.nasa.gov/compton/data/batse/misc/vp_list.fits>, is read to determine spacecraft orientation. Outputs is the source angle relative to the Z-axis, the BATSE LAD angles for each viewing period requested, and the approcimate COMPTEL and EGRET angular responses (as published in the Appendix-G to the CGRO Guest Investigatory Program NRA, <http://cossc.gsfc.nasa.gov/cossc/nra/appendix_g.html>), are retuned.
The Viewing plan for the entire CGRO mission can be found on the WWW at <http://cossc.gsfc.nasa.gov/timeline/index.html>.
User inputs source position in RA and DEC (J2000) decimal degrees, and viewing period (VP) range of interest. GROVIEW returns the source angle relative to the Z-axis, the BATSE LAD angles, COMPTEL Responses and EGRET Responses for each requested viewing period requested.
The parameter file input for this case would be:
view all VPs(y/n)?[n] ID of initial viewing period:[2040] 9090 ID of final viewing period:[2060] 9130 name of directory for data files:[data] Source RA in degree:[188.99] Source Dec in degree:[-0.74] inclination threshold angle:[40.] view OSSE Target(y/n)?[y] view EGRET Responses(y/n)?[y] view COMPTEL Responses(y/n)?[y] view BATSE Direction(y/n)?[y] ============================================== Viewing Period 9100 Spacecratf Z-Axis RA & DEC: 190.810, -3.420 Angle between Source and SC_Z: 3.239 ---------------- VP Statistics ---------------- OSSE Primary Target : 3C 279 OSSE Secondary Target: GPLANE 352.5 BATSE Direction Cosines: B[0]=-0.563 B[1]= 0.590 B[2]=-0.622 B[3]= 0.533 B[4]=-0.534 B[5]= 0.621 B[6]=-0.591 B[7]= 0.561 COMPTEL Responses: Efficiency Case 1: 1275 KeV, no phi-bar restriction: 0.00 Case 2: 1275 KeV, standard: 0.00 EGRET Responses: Effective Area only the central telescopes active: 100 Mev: 0.0 1 Gev: 0.0 ============================================== Viewing Period 9111 Spacecratf Z-Axis RA & DEC: 188.880, 0.850 Angle between Source and SC_Z: 1.594 ---------------- VP Statistics ---------------- OSSE Primary Target : 3C 273 OSSE Secondary Target: G CENTER 0+0 BATSE Direction Cosines: B[0]= 0.557 B[1]=-0.598 B[2]= 0.573 B[3]=-0.583 B[4]= 0.585 B[5]=-0.572 B[6]= 0.599 B[7]=-0.555 COMPTEL Responses: Efficiency Case 1: 1275 KeV, no phi-bar restriction: 1.00 Case 2: 1275 KeV, standard: 0.62 EGRET Responses: Effective Area only the central telescopes active: 100 Mev: 650.0 1 Gev: 1405.8 ==============================================
The Viewing Period list file "vp_list.fits",is required; see <ftp://cossc.gsfc.nasa.gov/compton/>. This should placed in data_dir/vp_list.fits
bodgetvp, bod2rmf, bod2pha, groview