Add new comment line in FITS headers

metis_l2_prep_uv.pro

@@ -169,6 +169,7 @@ pro metis_l2_prep_uv
 
 	fxaddpar, primary_header, 'COMMENT', 'WARNING: UV radiometric calibration is still preliminary.'
 	fxaddpar, primary_header, 'COMMENT', 'Uncertainty matrix in the FITS extension is preliminary.'
+	fxaddpar, primary_header, 'COMMENT', 'Rotate CROTA degrees counter-clockwise to have Solar North up.'
 
 	for k = 0, n_elements(history) - 1 do $
 	fxaddpar, primary_header, 'HISTORY', history[k]

metis_l2_prep_vl_generic.pro

@@ -200,6 +200,7 @@ pro metis_l2_prep_vl_generic
 	; update the comment and history keywords
 
 	fxaddpar, primary_header, 'COMMENT', 'Uncertainty matrix in the FITS extension is preliminary.'
+	fxaddpar, primary_header, 'COMMENT', 'Rotate CROTA degrees counter-clockwise to have Solar North up.'
 	
 	for k = 0, n_elements(history) - 1 do $
 	fxaddpar, primary_header, 'HISTORY', history[k]

metis_l2_prep_vl_polariz.pro

@@ -321,6 +321,7 @@ pro metis_l2_prep_vl_polariz
 	; update the comment and history keywords
 
 	fxaddpar, primary_header, 'COMMENT', 'Uncertainty matrix in the FITS extension is preliminary.'
+	fxaddpar, primary_header, 'COMMENT', 'Rotate CROTA degrees counter-clockwise to have Solar North up.'
 
 	history = ['Update WCS and solar ephemeris:', '  SKD version = ' + kernel_version]