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)
0 0
RedGreenBlue
z17.64
znorm Inf
sky -Inf -NaN -NaN
S/N 34.3 47.9 58.5
S/N(c) 30.4 62.0 26.3
SN(E/C) 0.69

IPAIRNAMESHIFTNEWSHIFTS/N NAMESHIFTNEWSHIFTS/N
0 19910024 0.498269 0.00000 19.7489 19910022 0.00000 0.498269 19.8017
1 19910023 0.496630 0.00163898 19.7009 19910025 0.00448787 0.493781 19.4824