diff --git a/index.json b/index.json
index cc5378a3943bc4cbb58be5349a56ebe18d361673..31636c0bd2f7cb58549e455c1c25844747bca700 100644
--- a/index.json
+++ b/index.json
@@ -6,8 +6,8 @@
 	"DOI": "",
 	"validity_range":
 	{
-		"start": "",
-		"end": ""
+		"start": "2020-02-10",
+		"end": "2021-04-30"
 	},
 	"constants":
 	{
@@ -179,8 +179,8 @@
 				"dit": 0.0,
 				"error": "solo_CAL_metis-vl-bias_20210421_V01_error.fits",
 				"source": "",
-				"descr": "Bias map to be used for STP139",
-				"validity": "Bias map to be used for STP144-145"
+				"descr": "Bias map to be used for STP144-145",
+				"validity": "False"
 			}
 		],
 		"dark":
@@ -511,15 +511,15 @@
 				{
 					"value": 243.0,
 					"error": 10.0,
-					"units": "pixel",
-					"descr": "Pixel corresponding to the S/C pointing in the E-W direction, measured from sensor center"
+					"units": "arcsec",
+					"descr": "Pixel corresponding to the IO center in the E-W direction, measured from sensor center"
 				},
 				"borpix2":
 				{
 					"value": -862.0,
 					"error": 10.0,
-					"units": "pixel",
-					"descr": "Pixel corresponding to the S/C pointing in the N-S direction, measured from sensor center"
+					"units": "arcsec",
+					"descr": "Pixel corresponding to the IO center in the N-S direction, measured from sensor center"
 				},
 				"plate_scale":
 				{
@@ -1018,10 +1018,9 @@
 				},
 				"opt_efficiency":
 				{
-					"value": 1.0,
-					"error": 0.0,
-					"units": "ph/ph",
-					"descr": "",
+					"file_name": "uv2vl_baseline.fits",
+					"error": "",
+					"descr": "UV to VL ratio of the door retro-illumination, to be used as map of optical efficiency",
 					"source" : "",
 					"validity": "False"
 				}
@@ -1055,13 +1054,13 @@
 					"value": 15.5,
 					"error": 0.0,
 					"units": "arcsec",
-					"descr": "Pixel corresponding to the S/C pointing in the E-W direction, measured from sensor center"
+					"descr": "Pixel corresponding to the IO center in the E-W direction, measured from sensor center"
 				},
 				"borpix2": {
 					"value": -387.5,
 					"error": 0.0,
 					"units": "arcsec",
-					"descr": "Pixel corresponding to the S/C pointing in the N-S direction, measured from sensor center"
+					"descr": "Pixel corresponding to the IO center in the N-S direction, measured from sensor center"
 				},
 				"plate_scale": {
 					"value": 20.40,
diff --git a/uv2vl_alternative.fits b/uv2vl_alternative.fits
new file mode 100644
index 0000000000000000000000000000000000000000..563ba94c5acf6f2d34603c9677d3f5aa364872d2
Binary files /dev/null and b/uv2vl_alternative.fits differ
diff --git a/uv2vl_baseline.fits b/uv2vl_baseline.fits
new file mode 100644
index 0000000000000000000000000000000000000000..201c374d5b96e9c0e6665d3b15197d2f9ded169a
Binary files /dev/null and b/uv2vl_baseline.fits differ