README web version of /home/usg/OPS/MTS/readme_xml/readme_82046900
Principal Investigator Email Address
Estimated Total Execution Time (hours, including overheads)
General Description
The aim of our project is to obtain J and K band photometry for Cepheids
in one HAWKI field in M33 galaxy. Our target stars are faint, so in order to obtain
desired S/N ratio we need relatively long exposures. Therefore each J,K band exposure
was splited into three about 1 hour OBs
(only two OBs for the third night)
THE FOLLOWING REQUEST WAS RELAXED ON 2008.12.30 (NOW ALL OBs ARE INDEPENDENT)
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! Please execute them together (e.g. one after another) on a given night. The
! waiver to execute our OBs in such a way was granted under the condition that
! if after one hour of execution time the weather conditions degrade the
! sequence of all OBs will not be re-executed. If such a situation happens
! (e.g. after one hour the seeing degrades significantly or thick clouds
! comes) please stop the sequence and execute the remaining OBs on different
! night (this still should be usefull for our program).
One set of OBs (e.g. 3 OBs M33*-N1), should be executed together with 7 OBs for
the UKIRT standards. Since the main goal of our project is to measure precise distance
to M33, we have to accurately calibrate our data onto the
UKIRT system. Therefore we would appreciate very much if some additional UKIRT or
NICMOS standards could be observed on the twilight sky.
Due to observe Cepheids on significantly different pulsational phase the second
epoch observations should be executed at least 4 days after ececuting the firts
set of OBs. For the same reason please
execute the third set of OBs et least 4 days after the second set. There is no
upper limit for the gap between the diferent sets of OBs.
Please note that the third
set of OBs are different (e.g. different observing template). Simple jittering should
be OK for the
long period Cepheids in our field for which we need the third epoch.
All 10x10 arcmin finding charts were dane based on the DSS-IR survey (J band).
On each map a 1' box is marked.
Please note that our target galaxy could be observed at the X < 2.0 only during
about 3.5 hours per night in October and November and the whole set of OBs lasts
about 3 hours.
Waiver Requests
Critical Observing Condition Constraints
Time-Critical Aspects
Special Execution Requirements
Special Calibration Information
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 you submitted OBs for standard stars, did you use the provided StandardStar
templates ?
If you are using a specific offset pattern or position angle, did you
check carefully the definition in the manual ?
Did you enter the magnitude of the brightest star in the field-of-view
in the 'Instrument Comments' field of each OB ?
If you use the MoveToPixel acquisition, have you given clear instructions
on the FC and in the OB comment section as to how the field should be centered ?
Last creation of page: Tue Oct 6 15:40:27 2009
If you have comments, please contact usd-help@eso.org