Changes between Version 10 and Version 11 of MoonGlintTest

Timestamp:

Dec 8, 2009, 12:02:32 PM (17 years ago)

Author:

watersc1

Comment:

--

MoonGlintTest

@@ -37 +37 @@
 ----
 
+Sky brightness levels for matched pairs of ISP and GPC1 images as a function of airmass and moon angle.  The ISP data is consistent with airmass effects.  The GPC1 data shows strong glints at moon angles ~ 30-35 degrees. 
+[[Image(ispBLUE_gpcRED.comp.alt70.png)]]
 
+The same data, now plotted as differences in sky brightness.  The pairing mitigates the airmass trends, showing that GPC1 gradually becomes brighter relative to the ISP, with the glints influencing the ~ 30-35 degree range.  All "GPC1 bright" pairs with moon angle > 50 degrees all come from the same night, and the observing logs note clouds.  Therefore, these points are likely not to be related to the telescope, but to variations in cloud cover. 
+[[Image(isp_gpc.difference.alt70.png)]]