COS-GTO: Io Atmosphere/STIS
We will use six HST orbits with COS to observe the disk-integrated longitudinal distribution of Io’s atmosphere, and ten HST orbits with STIS to provide complementary disk-resolved information at key locations. We wil use the COS G225M grating to observe four SO2 absorption bands, which can be used to determine SO2 atmospheric density. Disk-integrated 19 micron observations of the atmosphere indicate that the anti-Jupiter hemisphere of Io has an atmospheric density roughly ten times greater than the Jupiter-facing side (Spencer et al. 2005), and mm-wave observations suggest a similar pattern. However the infrared and mm-wave observations cannot easily separate atmospheric density from atmospheric temperature, so these results are model-dependent. Sparse 2100 – 2300 Å disk-resolved observations (McGrath et al. 2000, Jessup et al. 2004) tell a consistent story, but do not cover enough of Io’s surface to provide full confirmation of the long-wavelength result. We will therefore observe Io’s disk-integrated atmospheric density at six longitudes, roughly 30, 90, 150, 210, 270, and 330 W, to confirm the 19 micron results and improve our ability to model the 19-micron data.
With STIS, we plan disk-resolved 2000-3200 Å spectroscopy of Io's SO2 atmosphere. Our observations will target low-latitude regions away from active plumes (in contrast to our Cycle 10 observations (Jessup et al. 2004) which targeted the Prometheus plume), to look for the effect of plumes on the atmosphere. We will also look at the variation of low-latitude atmospheric abundance with terrain type, to look for explanations for the large longitudinal variations in atmospheric pressure to be studied with COS. Finally, we will look at a variety of regions at two different times of day to determine the extent of diurnal variations in the atmosphere, which are expected if the atmosphere is dominantly supported by frost sublimation.
We will use the COS G225M grating to observe Io at six longitudes, roughly 30, 90, 150, 210, 270, and 330 W, for one orbit each. We will also use the STIS G230L grating with the 0.1" slit to observe the same low-latitude locations on Io for 5 orbits at each of two different central longitudes, roughly 200 W and 250 W, to determine the variation in SO2 abundance with time of day.
The STIS observations are treated as ten separate visits so that they can be shuffled as necessary to fit within the orbital longitude constraint- there may be room for 2 - 3 consecutive visits within a given rotation of Io. We are doing a diffuse acquisition for all the STIS visits because accurate pointing is critical.
SOLAR SYSTEM
12
false
0.0
0.0
false
false
false
false
SUPPORTED
SOLAR SYSTEM
20 degree target window --> 145 minutes of Io's 1.769-day orbit
SATELLITE
Io near 30 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-30W FROM EARTH BETWEEN 20 40
EARTH
SOLAR SYSTEM
SATELLITE
Io near 90 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-90W FROM EARTH BETWEEN 80 100
EARTH
SOLAR SYSTEM
SATELLITE
Io near 150 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-150W FROM EARTH BETWEEN 140 160
EARTH
SOLAR SYSTEM
SATELLITE
Io near 210 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-210W FROM EARTH BETWEEN 200 215
EARTH
SOLAR SYSTEM
SATELLITE
Io near 270 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-270W FROM EARTH BETWEEN 260 280
EARTH
SOLAR SYSTEM
SATELLITE
Io near 330 degrees west meridional longitude
STD=JUPITER
STD=IO
F(2900) = 50 kR
CML OF IO-330W FROM EARTH BETWEEN 320 340
EARTH
SOLAR SYSTEM
14 degree target window --> 100 minutes of Io's 1.769-day orbit (though the window may be reduced on the low-CML side by the need to keep a minimum distance from Jupiter)
The range limit ensures good spatial resolution
SATELLITE
Io near 200 degrees west meridional longitude
STD=JUPITER
STD=IO
TYPE=PGRAPHIC,LONG=235,LAT=5
F(2900) = 50 kR
CML OF IO-200W FROM EARTH BETWEEN 188 212,
RANGE JUPITER EARTH LT 4.8
EARTH
SOLAR SYSTEM
14 degree target window --> 100 minutes of Io's 1.769-day orbit (though the window may be reduced on the low-CML side by the need to keep a minimum distance from Jupiter)
Range limit droped from this target so visit 7 could be scheduled in Dec 2010. Other that that, it is the same as target 7.
SATELLITE
Io near 200 degrees west meridional longitude
STD=JUPITER
STD=IO
TYPE=PGRAPHIC,LONG=220,LAT=0
F(2900) = 50 kR
CML OF IO-200W FROM EARTH BETWEEN 192 208
EARTH
SOLAR SYSTEM
14 degree target window --> 100 minutes of Io's 1.769-day orbit
The range limit ensures good spatial resolution
SATELLITE
Io near 250 degrees west meridional longitude
STD=JUPITER
STD=IO
TYPE=PGRAPHIC,LONG=235,LAT=5
F(2900) = 50 kR
CML OF IO-250W FROM EARTH BETWEEN 238 262,
RANGE JUPITER EARTH LT 4.8
EARTH
COS/NUV
Spectroscopic
No
No
G225M
COS/NUV
Spectroscopic
No
No
G225M
COS/FUV
Spectroscopic
No
No
G130M
COS/FUV
Spectroscopic
No
No
G130M
Using ephemeris for target 12041-01-IO-30W
ephemeris data for target 12041-01-IO-30W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1285606204000
62.452591564193796
(Tic-Visit
:proposal-id 12041
:visit-id "01"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:40.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "01"
:obset-id "01"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "01"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
Using ephemeris for target 12041-02-IO-90W
ephemeris data for target 12041-02-IO-90W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1286549586000
46.0
(Tic-Visit
:proposal-id 12041
:visit-id "02"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:42.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "02"
:obset-id "02"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "02"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
Using ephemeris for target 12041-03-IO-150W
ephemeris data for target 12041-03-IO-150W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1286118176000
82.42779414472722
(Tic-Visit
:proposal-id 12041
:visit-id "03"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:43.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "03"
:obset-id "03"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "03"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
Using ephemeris for target 12041-04-IO-210W
ephemeris data for target 12041-04-IO-210W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1286141185000
87.47550898591243
(Tic-Visit
:proposal-id 12041
:visit-id "04"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:45.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "04"
:obset-id "04"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "04"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
Using ephemeris for target 12041-05-IO-270W
ephemeris data for target 12041-05-IO-270W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1285865060000
60.7893011299204
(Tic-Visit
:proposal-id 12041
:visit-id "05"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:46.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "05"
:obset-id "05"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "05"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
Using ephemeris for target 12041-06-IO-330W
ephemeris data for target 12041-06-IO-330W does not cover planning interval. Physical constraints are assumed to be unschedulable outside of the ephemeris data. Planning interval: 10.239 to 12.214. ephemeris interval: 11.212 to 13.213
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
1285732753000
55.68348557080941
(Tic-Visit
:proposal-id 12041
:visit-id "06"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:48.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "32"
:si-bright-earth-limb-angle 20.0
:data-volume 287120
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "06"
:obset-id "06"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "06"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2801
:al-overhead-at-end 0
:internal-dur-at-end 428
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Spectroscopic ACQ ETC: COS.A208428, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208433
0.5 mags dimmer: COS.A208435
All need < 1.0s to get S/N = 40
Spectroscopic ACQ ETC: COS.A208443, with composite spectrum of Io, based on (1) direct flux measurements (below 2300Å) and (2) albedo measurements + solar flux scaled for Io distance/size. Scaled to mV=5.3, but makes only slight difference from unscaled spectrum.
ACQ/Search
0.5 mags brighter: COS.A208440
0.5 mags dimmer: COS.A208439
All need < 1.0s to get S/N = 40
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
ETC: COSA208450 gives buffer time 2/3 of 12434
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 1 of 5 to Io longitude 200
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
1292404441000
81.0
(Tic-Visit
:proposal-id 12041
:visit-id "07"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:49.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "07"
:obset-id "07"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "07"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 2 of 5 to Io longitude 200
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "08"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:49.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "08"
:obset-id "08"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "08"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 3 of 5 to Io longitude 200
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "09"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:50.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "09"
:obset-id "09"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "09"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 4 of 5 to Io longitude 200
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "10"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:51.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "10"
:obset-id "10"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "10"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 5 of 5 to Io longitude 200
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "11"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:51.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "11"
:obset-id "11"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "11"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 1 of 5 to Io longitude 250
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "12"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:52.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "12"
:obset-id "12"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "12"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 2 of 5 to Io longitude 250
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "13"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:53.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "13"
:obset-id "13"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "13"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
true
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 3 of 5 to Io longitude 250
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "14"
:proposal-version -1
:trans-version "20110811"
:date "23-Aug-2011 13:31:05.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "14"
:obset-id "14"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "14"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
false
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 4 of 5 to Io longitude 250
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "15"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:54.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "15"
:obset-id "15"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "15"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
false
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure
The scheduling data was generated by CASM 19.3.
CASM was run in Phase II mode.
Visit 5 of 5 to Io longitude 250
The long spatial dimension of the STIS slit should be oriented 64 degrees counterclockwise from Io north, i.e. position angle 38.5 deg CCW from celestial north for the 2010 apparition, which should be roughly 19 degrees off-nominal, because Io north is close to ecliptic north, and the nominal orientation is 45 degrees counterclockwise from ecliptic north.
The orient angles listed place the slit roughly 19 (+/- 1.5) deg off nominal
The equivalent (+180) value is also listed, and is equally good.
(Tic-Visit
:proposal-id 12041
:visit-id "16"
:proposal-version -1
:trans-version "20110509"
:date "03-Aug-2011 12:31:55.0"
:trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0
:FATAL-ERRORS 0 :CONTINUABLE-FATALS 0)
:number-of-orbits 1
:saa-model "24"
:si-bright-earth-limb-angle 20.0
:data-volume 157200
:tdrss-contact-duration 0
:coron NIL
)
(Tic-Obset
:proposal-id 12041
:visit-id "16"
:obset-id "16"
:pcs-mode "FGS"
)
(Tic-Orbit
:proposal-id 12041
:visit-id "16"
:orbit-number 1
:pcs-time 333
:si-vis-utilization 2820
:al-overhead-at-end 0
:internal-dur-at-end 377
:dark-offset NIL
:dark-utilization 0
:max-dark-utilization 1920
:low-sky "N"
:pcs-visibility 3234
:pcs-gap 0
)
false
1
0
Acquisition of the geometric center of Io's disk, prior to offset to the specfic lat/long for the science exposure