General X- and gamma-ray instrument info table - instruments better for 0.1-10 keV included.

You can find information on Scheduled Space Launches on this page: http://www.satelliteonthenet.co.uk/index.php/2015

BAT info on a separate page

The Swift UVOT Users's guide http://swift.gsfc.nasa.gov/analysis/UVOT_swguide_v2_2.pdf, P. 76 says, “ look at http://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/swift/docs/uvot/” for integrated PSFs.

UVOT Users guide p. 152 says to use radius=3“ apertures: “In general faint point sources should use circular apertures with a radius that maximizes the signal-to-noise ratio in the aperture. This is typically about 3 arcsec.”

UVOT W band PSF is FWHM = 2.37 ” http://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/swift/docs/uvot/uvot_caldb_psf_02.pdf THERE IS AN IMPORTANT TRICK FOR CALDB: the curve-of-growth is normalized at 5“; ALL FLUX is really about 115% for W, not 100%.

http://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/swift/docs/uvot/uvot_caldb_counttofluxratio_10wa.pdf describes the calibration of UVOT filters.

Their procedure calculates the flux-weighted effective wavelength of vega (3470Å); then calculates ratios of expected count rate for f_nu~ nu^+2 spectrum; (I use index= +0.75). They give a “count rate to flux ratio” for various indices and extinctions of 2.6 to 4.4e-17. I just assume use 3.5e-17. They give errors on this of > 10%.

Fermi GBM is like a smaller version of BATSE; scintillators on the corners of cube geometry give all-sky (with earth occulting a LOT of the sky) coverage and rough localization.

The reference here is Connaughton+15 ApJS https://iopscience.iop.org/article/10.1088/0067-0049/216/2/32#apjs506206s6.

Ground-Automated GCN NOtices 30-60 s after trigger give 68% probability within (+/- or radius) 7.6 deg; there is a much larger tail for like 90% probability. BRIGHT SUB-SAMPLE: GRBs reported with only 1 deg. statistical uncertainty, 68% radius=2.9 deg.

one degree radius looks like it would get you about 10% of the Bright Sub-sample. for a square FOV, that's 1.7 deg on a side - yuk. two deg on a side gets you radius = 1.13 deg and around 17.5% of Bright sample events. So, that helps.

HiTL (Human in the Loop) positions are available ~ 1 hr later. 68% prob. radius=5.3 deg. BRIGHT SUB-SAMPLE: for For GRBs reported with only 1 deg. statistical uncertainty, 68% radius=3.4 deg (yes, worse than automated).