README web version of /home/usg/OPS/MTS/readme_xml/readme_84020600
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
Run A will be triggered as soon as possible in the semester to image the
longitude of the July 2009 impact, and to obtain spectroscopy of any residual species
left over from the collision. We will directly communicate with the observatory
for the execution of these observations, which could change the contents of this
readme file. Central meridian crossing times and any additional information will
be provided along with the trigger.
In order or priority, the goals of this program are:
1. Imaging of Jupiter's southern hemisphere in 8 filters: 7.9, PAH1, SIV_2, NeII_2,
Q1, Q2, Q3, NeII_1.
2. Spectroscopy at MR10.1, MR10.3, MR10.5, HR8.02, and HRX 13.364 microns for the
target, with the slit north-south along the central meridian.
Waiver Requests
A waiver was requested to target the residual debris from the Jupiter
impact on the southern hemisphere with the first trigger. Originally we had intended
to use this trigger for changes to the Jovian ovals, but as the OBs are identical
irrespective of target, we thought that such a shift in target would be straightforward.
Critical Observing Condition Constraints
Time-Critical Aspects
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 is sufficient to minimize
overlap on the planet's southern hemisphere.
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).
For northern hemisphere imaging, Jupiter should be centered right-left, with the
northern limb some 3-4 pixels above the top of the field of view, chopping so as
to avoid overlap of the positive and negative images on the northern hemisphere
(see example in finding charts).
POINTING FOR SPECTROSCOPY:
Rotate slit so that it lies north-south parallel to the central meridian (see finding
charts).
North polar angle is 340.12 on October 1st, and variations are in the ephemeris
table.
Ensure negative beam does not obscure the feature of interest.
HRX Spectra:
Because of the short slit length for HRX spectra, we have provided two sets: one
spectrum of the south polar region (the southern edge of the slit should be on the
south pole of the planet), and one aimed at 55S (the impact latitude, approximately
3 arcsec pixels north of the south pole). For the latter, we suggest moving the
slit so that it is half a slit-length (i.e. 2") to the north of the south pole.
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.
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_MRHR
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
If you have comments, please contact usd-help@eso.org