12.8	Cycle 20 Calibration Program

The Cycle 20 calibration program continues the routine calibration and monitoring observations performed in Cycle 19. The Cycle 20 calibration programs are listed in Table 12.6.

Table 12.6: Cycle 20 Calibration Program

Program ID	Title	Accuracy Achieved	Products
NUV Monitors
13128	NUV MAMA Fold Distribution	< 5% in the location of the peak of the fold distribution
13126	NUV Detector Dark Monitor	< 5%	ISR
13125	NUV Spectroscopic Sensitivity Monitor	S/N = 30 at λcen	ISR, Reference file
13127	NUV Internal/External Wavelength Scale Monitor	wavelength zero-point accuracy to a few pixels	ISR, Reference file
FUV Monitors
13121	FUV Detector Dark Monitor	a few counts per exposure	ISR
13119	FUV Spectroscopic Sensitivity Monitor	S/N = 15 at the λ of least sensitivity	ISR, Reference file
13122	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
13124	Monitoring of COS ACQ/IMAGE Performance	WCA–PSA offsets to ≤0.5 pixels

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1

Coordinated parallel with STIS calibration program 13145.