Changes between Version 2 and Version 3 of PS1_3pi_DVO_20110421

Timestamp:

May 3, 2011, 11:10:29 AM (15 years ago)

Author:

eugene

Comment:

--

PS1_3pi_DVO_20110421

@@ -19 +19 @@
 Some notes on what this database contains:
 
- * all 3pi data taken since the start of demo month (2010/2/12) through the start of April (2011/4/1)
+ * all^1^ 3pi data taken since the start of demo month (2010/2/12) through the start of April (2011/4/1)
  * 2MASS detections matched to all objects
  * average fields for grizy and JHK (eg, avextract g i J K would work)
@@ -26 +26 @@
  * average magnitudes use a weighted mean, and skip detections that have PSF_QF < 0.85 (excessively masked objects).  there is no iterative clipping, however.
 
+^1^ a caveat regarding coverage: there seem to be some gaps that do not correspond to known gaps in the data taken.  
+
 In addition, there are 4 bit flags available in the average table for
 each object to give a hint at quality and extendedness:
 
-* for all PS1 detections, the detection is considered 'extended' if (mag_psf - mag_ap > 0.5)
-* if the number of 'extended detections' exceeds the number of 'psf-like' detections, the object is flagged as "PS1 extended" (objflag & 0x01000000)
-* if any of the detections have PSF_QF  > 0.85, then the object is considered "PS1 good" (objflag & 0x04000000)
-* similarly, if the 2MASS J-band flags indicate the source is extended, the object is considered "2MASS extended" (objflag & 0x02000000)
-* if the 2MASS J-band detection is significant (**), the source is considered "2MASS good" (objflag & 0x08000000)
-
-** A significant 2MASS source means their field ph_qual is one of the 3 classes A, B, or C, which means the source is > 5 sigma and has some quality limits.  
+ * for all PS1 detections, the detection is considered 'extended' if (mag_psf - mag_ap > 0.5)
+ * if the number of 'extended detections' exceeds the number of 'psf-like' detections, the object is flagged as "PS1 extended" (objflag & 0x01000000)
+ * if any of the detections have PSF_QF  > 0.85, then the object is considered "PS1 good" (objflag & 0x04000000)
+ * similarly, if the 2MASS J-band flags indicate the source is extended, the object is considered "2MASS extended" (objflag & 0x02000000)
+ * if the 2MASS J-band detection is significant (**), the source is considered "2MASS good" (objflag & 0x08000000)
+  * A significant 2MASS source means their field ph_qual is one of the 3 classes A, B, or C, which means the source is > 5 sigma and has some quality limits.  
 
 For more information about 2MASS representation in DVO, see [wiki:2MASS_info_in_DVO].