Surface map computed from 2003-2004 images
Observing Instructions
The following observing sequence should take 15-25 minutes to complete
depending on the script used.
Anything in typewriter font is a NIRC2 command which can be
copied and pasted into any waikoko window.
- Instruct the OA to slew to Titan. Coordinates can be found
here
(thanks to Henry Roe).
- While slewing, run the following script to configure NIRC2 and
get ready for test images: /home/nirc2eng/vis/teamkeck/titan_setup.
- Have the OA close the AO loops using auto-AO settings tool with 1.0"
centroid offset scaling.
- Take a test image (test), determine the x,y
pixel position of Titan using the cursor, and if necessary move Titan
to the detector center by running: mov x y 256 256
(only central 512x512 subarray is being read out).
- Run one of the following macros, depending on the time available:
| /home/nirc2eng/vis/teamkeck/titan2filt |
8.2 min runtime |
| /home/nirc2eng/vis/teamkeck/titan3filt |
12.2 min runtime |
| /home/nirc2eng/vis/teamkeck/titan4filt |
16.3 min runtime |
- In case you have trouble running the macro, the following NIRC2 commands
are equivalent to running titan4filt (though less efficient):
- camera narrow; pupil largehex; pmrrot on; wait4ao on ; wait4dar off
- object Titan ; subc 512
- filt kp ; sampmode 3 8 ; tint 10 ; coadd 3 ; bxy3 1.25 n=2
- filt nb2.108 ; sampmode 3 32 ; tint 60 ; coadd 1 ; bxy3 1.25 n=1
- filt brgamma ; sampmode 3 32 ; tint 60 ; coadd 1 ; bxy3 1.25 n=1
- filt he1_b ; sampmode 3 16 ; tint 30 ; coadd 1 ; bxy3 1.25 n=2
- Please send email with data directory and start/end file numbers to
abouchez@astro.caltech.edu
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