README web version of /home/usg/OPS/MTS/readme_xml/readme_83504301
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The overall goal of run B is to follow up the imaging and spectroscopic
characterisation of Jupiter's impact site (impact on July 19th, run A on July 24th-26th).
In order or priority, the goals of this program are:
1. Imaging of Jupiter's southern hemisphere and impact scar in 8 filters: 7.9,
PAH1, SIV_2, NeII_2, Q1, Q2, Q3, NeII_1. This will be repeated twice (three times
if there's available time).
2. Spectroscopy at MR 7.5-9.3, 10.3-13.0, HR 8.02 and HRX 13.36 microns for the
impact site, with the slit east-west through the feature.
Waiver Requests
Critical Observing Condition Constraints
Time-Critical Aspects
These observation blocks should be conducted as soon as possible to measure
the thermal signature of the impact. Ephemeris and rates have been supplied from
August 1st through to September 30th, 2009.
Please execute the OBs in the following order (Finding charts are included to locate
the targets):
1. Cal_spect_star (around 2 hours before central meridian crossing).
2. MOV_spect_jup_impact (3 spectra of the impact site close to central meridian
crossing).
3. Mov_img_jup_set1 (8 filters, 60s exposures), execute as close to central meridian
crossing as possible.
4. MOV_spect_jup_impact_HRX (1 spectrum), just after central meridian crossing.
5. Cal_spect_star_HRX (1 calibration spectra on the star).
6. Mov_img_jup_set2 (a second imaging set after central meridian crossing).
If time is then remaining:
7. Mov_img_jup_set3 (a third characterisation of the impact site as it sets on the
limb).
Central Meridian Crossing times for the impact feature:
Output format: Date UT (C.M. of System 3, Altitude of Jupiter)
Elevations < 40 degrees have been removed.
UT CM xing airmass imaging spectroscopy
date time,UT @CM UT range UT range
xin 3 hours 4 hours (more liberal about
foreshortening)
Aug 08 02:25 1.357 00:55-03:55 00:25-04:25
Aug 09 08:12 1.382 06:42-09:42 06:12-10:12
Aug 10 04:02 1.076 02:32-05:32 02:02-06:02
Aug 11 09:48 2.474 08:18-09:19 07:48-09:19 (limited by airmass<2.00)
Aug 12 05:39 1.049 04:09-07:09 03:39-07:39
Aug 13 01:30 1.538 00:00-03:00 23:30-03:30
Aug 14 07:16 1.243 05:46-08:46 04:16-09:16
Aug 15 03:08 1.125 01:38-04:38 01:08-05:08
Aug 16 08:53 1.942 07:23-09:02 06:53-09:02 (limited by airmass<2.00)
Aug 17 04:44 1.035 03:14-06:14 02:44-06:44
Aug 18 00:35 1.808 00:18-02:05 00:18-02:35 (limited by airmass<2.00)
Aug 19 06:21 1.150 04:51-07:51 04:21-08:21
Aug 20 02:12 1.204 00:42-03:42 00:12-04:12
Aug 21 07:58 1.618 06:28-08:36 05:58-08:36
Aug 22 03:48 1.040 02:18-05:18 01:48-05:48
Aug 22 23:40 2.233 23:55-01:10 23:55-01:40 (ending on UT Aug 23)
Aug 24 05:27 1.090 03:57-06:57 03:27-07:27
Aug 25 01:17 1.317 23:47-02:47 23:17-03:17 (starting on UT Aug 24)
Aug 26 07:04 1.411 05:34-08:34 05:04-09:04
Aug 27 02:54 1.064 01:24-03:24 00:54-04:54
Aug 28 08:40 2.603 07:10-08:06 06:40-08:06
Aug 29 04:31 1.050 03:01-06:01 02:31-06:31
Special Execution Requirements
Generic chop nod is used with two dither positions to remove bad pixels,
but please try to avoid these if possible.
POINTING: The second chop position will be discarded, so ensure chop throw is sufficient
to minimize overlap on the planet's southern hemisphere. This can be set at 20 arcsec.
For southern hemisphere imaging, Jupiter should be centered right-left, with the
southern limb some 3-4 pixels above the bottom of the field of view, chopping so
as to avoid overlap of the positive and negative images on the southern hemisphere
(see example in finding charts).
POINTING FOR SPECTROSCOPY: Rotate slit so that it lies east-west across the target
(see finding charts), perpendicular to the central meridian. The north polar position
angle is 338.6 degrees on August 5th 2009, so we estimate a rotation angle of 291.4.
Special Calibration Information
For imaging, we request standard star imaging to characterise the PSF
at approximately the same airmass.
Spectroscopy of HD200914 is requested to calibrate our spectra (in four different
modes).
HD200914 [pos 21:07:07.67 -25:00:21.0] d= 13.3148 degrees. (COHEN)
V=4.531,[12]=28.450Jy guidestar: U0600_43312979 9.4 mag * 24 Cap -- Star
in double system
Cal_spectr_star
Cal_spectr_star_HRX
This star is apparently double, but based on advice from Gemini we believe this
should be fine as a flux standard.
Possible alternatives include:
Nearest 3: HD201901 [pos 21:13:17.33 -27:37:09.5] d= 14.6273 degrees. (COHEN)
V=5.418,[12]=6.824Jy guidestar:U0600_43391505 12.3 mag HIP 104750 -- Star
Nearest 4: HD216032 [pos 22:49:35.50 -13:35:33.4] d= 16.0548 degrees. (COHEN)
V=4.053,[12]=37.960Jy guidestar: U0750_21320254 12.0 mag * tau Aqr -- Star
in double system
Nearest 5: HD206445 [pos 21:42:10.11 01:17:06.9] d= 16.0776 degrees. (COHEN)
V=5.659,[12]=5.350Jy guidestar: U0900_19776778 13.1 mag HD 206405 -- Star
Nearest 7: HD196321 [pos 20:36:43.63 -02:32:59.7] d= 20.5215 degrees. (COHEN)
V=4.903,[12]=16.460Jy guidestar: U0825_18511762 12.5 mag * 70 Aql -- Star
Nearest 9: HD200644 [pos 21:04:34.65 05:30:10.3] d= 22.4701 degrees. (COHEN)
V=5.629,[12]=8.683Jy guidestar: U0900_19338478 10.8 mag * 3 Equ -- Star in
double system
ToO Information
ToO Activators List
Is this a Pre-imaging run ?
Pre-imaging Requirements
Source(s) of Pre-imaging
Pre-imaging sources not listed above
Do all your OBs comply with the instrument-specific requirements listed
on the instrument-specific Phase 2 web page ?
If this is a pre-imaging run, did you select PRE-IMAGING for the Observing
Category for each Observing Template ?
Do all your finding charts comply with both the general and instrument-specific
Phase 2 Web Pages ?
If you submitted OBs for standard stars, did you specify the magnitude
and spectral type of all standard stars in the OBs ?
Have you included OBs for any calibrations that you need but which are
not part of the Calibration Plan ?
If you are observing Moving Targets, have you attached suitable ephemeris
files to your OBs?
If you have preferences which OBs should be executed first, did you make
use of the User Priority field in the OBs ?
If this is a run that requires coordinated observations with other facilities,
did you give proper instructions in the Time-Critical Aspects Section ?
If the provided finding chart is at a different wavelength than the observations,
did you clearly describe in the README file how to identify the target?
Did you specify a guide star brighter than V=12mag within a field of
r=5arcmin around the science target?
Last creation of page: Tue Oct 6 15:40:31 2009
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