Changes between Version 193 and Version 194 of MD.GR0

Timestamp:

Oct 11, 2011, 10:31:40 AM (15 years ago)

Author:

Mark Huber

Comment:

--

MD.GR0

@@ -42 +42 @@
 For cases when a stack does not have a good sample of exposures with a reasonably small PSF FWHM, it should be possible to generate a reference stack with the fewer 'best' exposures for just SSdiffs and transient detection. MD02-g may be such a case.
 
-For fields with shifted centers from offset earlier exposures, inclusion of enough exposures to provide a reference stack for magic is necessary in order for data from those associated chips/skycells to be distributed (being older data, may not have the optimum quality).
+For fields with shifted centers from offset earlier exposures, inclusion of enough exposures to provide a reference stack for magic is necessary in order for data from those associated chips/skycells to be distributed (being older data, may not have the optimum quality). Mixing older and newer data may also be a detriment.
 
 Related to deep stacks, there needs to be enough inputs to obtain as pixel contiguous as possible a minimum depth (see MD04 deep stack tests).
+
 = MD.V3 Tessellation =