Your starlist file contains the list of targets you plan to observe during the night at Keck. The file must conform to certain formatting rules described below in order for the telescope control software to read the file properly. There are additional requirements for Adaptive Optics target lists.
Note: There is NO NEED to double check that you have followed all these rules if you use our recommended AO Guide Star Tool. Still these guidelines can be useful to verify that your starlist meets the requirement.
Important Note: no spaces are allowed
around either side of the equals sign, nor within the keywords or
values themselves.
Contents
Formatting Rules for Keck Target Lists
Starlist Pattern
123456789012345 HH MM SS.SS +DD MM SS.SS 2000 keyword1=value1 keyword2=value2
General Rules
Required Fields
Additional AO Required Fields
Optional Fields
The following fields are identified by the form
keyword=value.
Property | Keyword | Units or Values | AO Lists |
---|---|---|---|
Comments | # | none | X |
RA proper motion | pmra=s.ssss | seconds-of-time/year | X |
Dec proper motion | pmdec=a.aaa | arcsec/year | X |
RA differential tracking rate | dra=s.ssss | arcsec/hr divided by 15 (positive implies moving east) | O |
Dec differential tracking rate | ddec=a.aaa | arcsec/hr | O |
Magnitude V and/or R |
vmag=m.m rmag=m.m |
mag | R | Color B-V and/or B-R |
b-v=m.m b-r=m.m |
mag | R |
Rotator mode | rotmode=nnn | pa, vertical, or stationary td> | I |
Rotator position angle | rotdest=mmm.mm | degrees | I |
Telescope azimuth wrap | wrap=xxx | shortest, south, or north (south is clockwise with az increasing and north is counterclockwise with az decreasing) | I |
RA telescope offset from target RA | raoffset=xx.x | arcseconds (positive implies moving east) | I |
Dec telescope offset from target Dec | decoffset=xx.x | arcseconds (positive implies moving north) | I |
Target name | Uranus | Neptune | AGN | Titan | Io |
Extent (FWHM in arcsec) | 2.80 | 1.68 | 1.0 | 0.7 | 0.7 |
In order for the Observing Assistant to locate your starlist file, you must install it in the “starlist directory” on our network. You can access the starlist directory /kroot/starlists from most of our computers.
mkdir -p /kroot/starlists/pinameand then install your starlist using the command
cp starlist /kroot/starlists/pinameYou are free to name your starlist file whatever you want.
# basic objects including only required fields 197+17.1 07 29 09.40 +20 54 45.90 2000.0 ring neb 18 53 36.00 +33 02 00.00 2000.0 # star with proper motion SAO 102961 17 34 24.13 +11 52 28.29 1950.0 pmra=+0.0001 pmdec=-0.007 vmag=9.0 # non-sideral targets Hale-Bopp 5hr 17 30 6.62 -4 41 58.4 APP dra=0.35 ddec=7.3 Titan 6:00UT 01 05 39.60 +04 00 28.846 APP dra=-0.96 ddec=-4.2 # slitmask with specified rotator position Cl0024+16-fld 1 00 24 00.00 +16 00 00.00 2000.0 rotdest=123.45 rotmode=pa # target observed at parallactic angle Herschel101 12 34 56.78 +01 23 45.67 2000.0 rotdest=0.0 rotmode=vertical # science target with nearby offset stars 198xq 13 55 45.78 -25 24 03.3 2000.0 198xq_S1 13 55 46.85 -25 23 46.3 2000.0 raoffset=-14.51 decoffset=-16.99 # 14.51" W, 16.99" S to 198xq 198xq_S2 13 55 48.26 -25 22 10.6 2000.0 raoffset=-33.61 decoffset=-112.72 # 33.61" W, 112.72" S to 198xq 198xq_S3 13 55 39.96 -25 21 50.1 2000.0 raoffset=78.83 decoffset=-133.21 # 78.83" E, 133.21" S to 198xq # AO targets 300 Sag A* 17 42 29.330 -28 59 18.50 1950.0 lgs=1 0609-0602733 17 45 40.713 -29 00 11.18 2000.0 rmag=14.0 sep=19.3 b-v=0.83 b-r=1.65 S=0.31 0609-0602749 17 45 42.287 -29 00 36.80 2000.0 rmag=13.5 sep=31.2 b-v=0.68 b-r=1.40 S=0.30 SKY Sag A* 19 00 00.0 -30 00 00.00 1950.0 lgs=0 comment=no laser M5_core 15 18 33.240 +02 05 1.40 2000.0 rmag=11.5 lgs=1 comment=NGS/LGS? IRAS 16342 16 37 39.890 -38 20 17.40 2000.0 lgs=1 0516-0460239 16 37 39.178 -38 20 13.33 2000.0 rmag=14.3 sep=9.3 b-v=1.01 b-r=1.88 S=0.35 313 V1974 Cyg 20 30 31.700 +52 37 51.30 2000.0 lgs=1 1426-0416488 20 30 28.917 +52 37 12.99 2000.0 rmag=13.7 sep=45.9 b-v=1.65 b-r=2.45 pa=69.0 S=0.27 NIR standard 21 30 31.700 +12 37 51.30 2000.0 vmag=10.1 lgs=0 comment=Ellias