Non-sidereal tracking with Subaru Telescope

Here are instructions to create non-sidereal tracking files using

To track a target of non-sidereal movement, i.e. Solar System objects, the telescope control system needs right ascension (RA), declination (Dec), and geocentric distance to the target for the time period during which observation will take place. TSC accepts a file for each target for each run or each night.

Observers should prepare coordinates of the targets. Observers may prepare coordinates using the JPL HORIZONS System or create files using the Observation Control System at the telescope site or from Hale Pohaku. Please refer to the instruction. Observers may also follow the traditional procedure to use the software provided by the observatory to estimate coordinates.

Please send files to the support astronomer or ask questions to Daigo Tomono <tomono at naoj.org>

#1 Ceres on July 26 HST
+00.0000 +00.0000 ON% +0.000
UTC Geocentric Equatorial Mean Polar Geocentric
ABS
TSC
7
20010727000000.000 185406.057 -303521.41   1.953782861 2000.0000
20010727003000.000 185405.055 -303524.50   1.953904593 2000.0000
20010727010000.000 185404.053 -303527.59   1.954026432 2000.0000
20010727013000.000 185403.051 -303530.67   1.954148379 2000.0000
20010727020000.000 185402.050 -303533.75   1.954270432 2000.0000
20010727023000.000 185401.049 -303536.82   1.954392592 2000.0000
20010727030000.000 185400.049 -303539.90   1.954514860 2000.0000

An explanation of the various terms is given below. It is strongly recommended that you use the underlined parameters.

Line # Options Description
1   Comment for the file (starting with #)
2 (+/-)ss.ssss RA proper motion (arcsec/yr)
(+/-)ss.ssss Dec proper motion (arcsec/yr)
ON%/OFF E-term
(+/-)0.sss Annual parallax (arcsec)
3 UTC/TDT
Geocentric/Heliocentric/Barycentric
Equatorial/Ecliptic
Mean/Apparent
XYZ/Polar
Geocentric/Heliocentric
4 ABS/REL
5 +/-/TSC Flag for Az drive direction
6   Number of lines following this one
7+
(max 6000)
YYYYMMDDhhmmss.sss Date and time
hhmmss.sss Right ascension (J2000.0)
(+/-)ddmmss.ss Declination (J2000.0)
rrr.rrrrrrrrr Geocentric distance (AU)
yyyy.yyyy Equinox

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