VISIR:
Reference frames

Standard VISIR reference frames

Although, currently, no calibration data are taken for VISIR, a number of health check data are acquired every day.

They include:

• a set of 2 dark frames for the imaging and spectroscopic detector; for the spectroscopic detector darks are taken in two instrumental setups: every day
• a set of 6 flatfield frames for the imaging detector: every day

Standard VISIR DARK Frames

Detector	IMAGING	SPECTROSCOPIC	SPECTROSCOPIC
Setup	CLOSE_0.127	MR_1.0_7.8	HRS_1.0_8.9
Dark 2nd raw
	0.3 Mb	0.3 Mb	0.3 Mb
	hdr	hdr	hdr
Dark product
	0.3 Mb	0.3 Mb	0.3 Mb
	hdr	hdr	hdr

Standard VISIR FLATFIELD Frames

Detector	IMAGING
Setup	PAH1_0.127
Flat 2nd raw
	0.3 Mb
	hdr
Flat product
	0.3 Mb
	hdr