Changes between Version 147 and Version 148 of MD.GR0

Timestamp:

Oct 9, 2011, 12:06:13 PM (15 years ago)

Author:

Mark Huber

Comment:

--

MD.GR0

@@ -30 +30 @@
 
 Reference stacks -- primarily for difference imaging for transient detection and necessary for magic destreaking.
- * Magic destreaking: a fairly clean reference stack (uses convolved version) with as much area coverage as possible to enable release of not-stack data products. Particularly important is inclusion of older data on different pointings and of course a fairly balanced dither set.
- * Transient detection: a balance slanted towards best PSF but with some depth (1-1.5 magnitudes over nightly stacks).
+ * Magic destreaking: a fairly clean reference stack (uses the convolved stack) with as much spatial area coverage as possible to enable release of non-stack data products. Particularly important is inclusion of older data on different pointings and of course a fairly balanced dither set.
+ * Transient detection: a balance slanted towards best PSF but with some depth (1-1.5 magnitudes over nightly stacks) and also a fairly balanced dither set.
  
 Deep stacks -- for deep static sky science.
- * As deep as possible.. maximum FWHM allowance? minimum exposure time? specific request for at least ~10ks has been requested, with best FWHM possible.
-
-See summary for each MD field reference stack for details on specifics for that field. Due to processing+time constraints/early mistakes, an attempted has been made to merge the similar criteria. 
+ * As deep as possible.. maximum FWHM allowance? minimum exposure time? specific request for at least ~10ks has been requested, with best FWHM possible and also a fairly balanced dither set..
+
+See summary for each MD field reference stack for details on specifics for that field. Due to processing+time constraints/early mistakes, an attempt has been made to merge the similar criteria under the ''refstack'' label. 
 
 Since magic destreaking uses the convolved stack, looking into a quickstack version of the unconvolved stacks for the transients reference and deep stack that will be faster to make with more inputs.
 
-For cases when a stack doesn't 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.
+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).
 = MD.V3 Tessellation =