Changes between Version 1 and Version 2 of 2MASS,_USNO-B,_SDSS_Merge

Timestamp:

Mar 8, 2009, 11:58:11 AM (17 years ago)

Author:

eugene

Comment:

--

2MASS,_USNO-B,_SDSS_Merge

@@ -2 +2 @@
 The 2MASS ingest is the slowest of the bunch: most of the time is spent parsing the free-form catalog files.  We need to use the special 'load2mass' command to upload 2MASS data.  I ran for instances of this command on ipp000, each updating a separate region of the sky (this should be Dec-bands because of the way 2MASS data is stored).  Here is an example for dividing the load across 4 roughly equal area patches:
 
+{{
  load2mass -D CATDIR catdir.2mass -v -replace -region 0.0 360.0 -90.0 -30.0
  load2mass -D CATDIR catdir.2mass -v -replace -region 0.0 360.0 -30.0   0.0
  load2mass -D CATDIR catdir.2mass -v -replace -region 0.0 360.0   0.0 +30.0
  load2mass -D CATDIR catdir.2mass -v -replace -region 0.0 360.0 +30.0 +90.0
+}}
 
 The -replace flag means that only a single 2MASS measurement per filter is associated with each object.  The -v flag increases the verbosity.
@@ -11 +13 @@
 Next, add in the USNO-B data.  Here are the commands loading the full sky in one pass for each filter:
 
+{{
  addstar -D CATDIR 2mass/catdir.merge -cat USNOB -photcode USNO_BLUE -replace -v
  addstar -D CATDIR 2mass/catdir.merge -cat USNOB -photcode USNO_RED  -replace -v
  addstar -D CATDIR 2mass/catdir.merge -cat USNOB -photcode USNO_N    -replace -v
+}}