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

Frame

Nreads

Zeropoints

Mag 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)

18710057

	Red	Green	Blue
z		18.74
znorm		14.55
sky	15.5	15.0	15.3
S/N	12.5	20.7	24.5
S/N(c)	31.4	36.8	30.7
SN(E/C) 0.49

18710058

	Red	Green	Blue
z		18.48
znorm		14.30
sky	15.6	15.1	15.6
S/N	10.1	17.7	20.7
S/N(c)	26.9	32.2	26.8
SN(E/C) 0.52