12.7	Cycle 19 Calibration Program

The Cycle 19 calibration program continued the routine calibration and monitoring observations performed in Cycle 18, including long-term programs to monitor the sensitivity and wavelength scale of both the FUV and NUV detectors. Brief descriptions of these programs are listed in Table 12.5.

Table 12.5: Cycle 19 Calibration Program

Program ID	Title	Accuracy Achieved	Products
NUV Monitors
12723	NUV MAMA Fold Distribution	< 5% in the location of the peak of the fold distribution
12720	NUV Detector Dark Monitor	< 5%	ISR
12719	NUV Spectroscopic Sensitivity Monitor	S/N = 30 at λcen	ISR, Reference file
12722	NUV Internal/External Wavelength Scale Monitor	wavelength zero-point accuracy to a few pixels	ISR, Reference file
12721	NUV Flat Monitor	S/N = 20–25 per 3×3 pixel element	Reference file
FUV Monitors
12716	FUV Detector Dark Monitor	a few counts per exposure	ISR
12715	FUV Spectroscopic Sensitivity Monitor	S/N = 30 at λcen	ISR, Reference file
12717	FUV Internal/External Wavelength Scale Monitor	wavelength zero-point accuracy to a few pixels	ISR, Reference file
Special Programs
None1	COS Observations of Geocoronal Lyman α Emission	G140L: S/N = 2 per pixel at 1200 Å, G130M: S/N = 2 per pixel at 1213 Å	List of exposures on the COS Web site that GOs may use to model and subtract Lyman α

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1

Coordinated parallel with a STIS calibration program.