Left plots: red are targets, blue are telluric. Observed mags are calculated from median value of green chip. Zeropoint gives overall throughput: bigger number is more throughput.
First spatial plots: circles are objects, squares are tellurics, crosses are sky fibers. Colors give deviation of observed mag from expected 2MASS mag using the median zeropoint; red is brighter
Second spatial plots: circles are sky fibers. Colors give sky line brightness relative to plate median sky line brightness
FrameNreadsZeropointsMag plots Spatial mag deviation Spatial sky 16325A emission deviations (filled: sky, open: star) Spatial sky continuum emission Spatial sky telluric CO2 absorption deviations (filled: H < 10)
19930011 47
RedGreenBlue
z18.94
znorm14.76
sky 14.4 14.2 14.1
S/N 18.9 26.3 33.0
S/N(c) 17.6 41.9 29.2
SN(E/C) 0.26
19930012 47
RedGreenBlue
z18.96
znorm14.78
sky 14.4 14.4 14.4
S/N 18.9 26.5 33.1
S/N(c) 17.8 42.3 29.4
SN(E/C) 0.26
19930013 47
RedGreenBlue
z18.94
znorm14.76
sky 14.4 14.6 14.4
S/N 18.6 26.3 32.7
S/N(c) 17.7 42.5 29.4
SN(E/C) 0.26
19930014 47
RedGreenBlue
z18.87
znorm14.69
sky 14.6 14.5 14.5
S/N 17.8 25.5 31.5
S/N(c) 17.0 41.1 28.3
SN(E/C) 0.25