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)
17730011	42	Red Green Blue z 18.70 znorm 14.64 sky 14.4 14.3 14.2 S/N 13.7 21.9 25.0 S/N(c) 17.0 8.5 22.2 SN(E/C) 0.32
17730012	42	Red Green Blue z 18.67 znorm 14.61 sky 14.7 14.5 14.4 S/N 13.3 21.5 24.4 S/N(c) 16.3 8.4 21.6 SN(E/C) 0.33