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Pointing with and without REMSKY
Pointing with and without REMSKY
- Work on ou - to allow lots of disk space
- On the web, find JAC web page, JAC archive, SCUBA data.
- select POINTING as observation type, 500 as max returned
results,
and enter a starting data, such as >01-jan-1998, meaning get as much
as you can after 01-jan-1998.
- This should produce a list (allow time for the task to
complete).
- Note the date of the last return so that you can iterate if
necessary.
- Mark all datasets and press Retrieve (let it complete each stage
!)
- Retrieve just the 'List'
- This generates on the web a .pf file with datanames attached.
- Save this (press the top-left web-page buttons 'File' and 'Save
as') and save the .pl file to an appropriate directory.
- run this .pl file as ./.pl -orac
- This creates links to the pointing files and these 'appear' as
files in this directory. The -orac flag makes the links sequential;
as if they were all assigned to UT day 1 - this makes the oracdr
analysis, later, easy.
- Initialize orac :
- source /jcmt_sw_etc/login
- setenv ORAC_DATA_IN
- setenv ORAC_DATA_OUT
- You could run oracdr :
- oracdr -ut 1 -from 1 -to -verbose -nodisplay -log=f
This reduces the pseudo UT-day=1 data without graphical display,
and with the reporting, in full, going to a file called
.oracdr_nnnnnn.log. The summary data is in log.pointing.
- The .oracdr_nnnnn.log file should be grep-ed for the key
entries.
These should be put in a little file (currently pat1 in
/home/imc/scuba/pointing/out2) containing these 4 lines :
- REDUCING
- integration(s) in
- Centroid position:
- Maximum pixel value
and grep should be run as
-
grep -f pat1 .oracdr_nnnnn.log > outputfilename
- You'll find that the leading characters of the lines in the
output are junky - trim this (and the first 'real' string) using
- awk '{print $2, $3, $4, $5, $6, $7, $8, $9, $10}'
with the input file being the above outputfilename and direct
the output to another file. For convenience in the next step
make this output filename n.lis1
- Run /home/imc/scuba/pointing/out2/get4.exe on n.lis1 to
give n.lis2. Rename n.lis2 if you want to save this data.
- The default recipe for reduction of pointing is controlled by a
file called SCUBA_POINTING in ORAC_RECIPE_DIR. You should copy
this file into your default directory and do
setenv ORAC_RECIPE_DIR .
- To repeat the oracdr reduction without remsky, edit
SCUBA_POINTING to suppress remsky, or whatever else you'd like to
do. To clean up the _reb.sdf files put
system 'rm *_reb.sdf';
as the last line.
Iain Coulson
13 Sep 1999
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