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Une nuit d'observation

Beginning of the night

Weather station

  • su
  • service wview restart
    if it doesn't work, retry or check the wiring of the meteo station
  • firefox -> see in the wiki under Station meteo
  • exit

Which TRANSIT to observe

 

Telescope

  • telescoped
  • xobs
    • find homes
    • find limits (only if the telescope was accidentally moved )
  • ds9 &
  • paladin --ds9

Calibration

Flat

  • ngflatfield
    • --start now
    • --numexposures 30
    • --targetadu 15000
    • --duration 1h [or alors 1s or 1m]

At this point, paladin give the number of the action. It will be usefull to check the images in: /local/actionXXX

Focus

  • ngaddfield
    • --ra
    • --dec
    • --
  • ngmapfieldCam
    • --field
    • --Camera
  • ngfocusweep
    • --start now
    • --field June
    • --exptime 5
    • --startpos 2.5
    • --endpos 4.0
    • --step 0.1
    • --duration auto

Minimum focus finding

It's possible to plot the best focus in each pixel, or in the entire ccd using:

cd ngts/Observations/RunFocus/new_code
python get_fwhm.py 1081 /*name of action*/

display the image on a terminal using:

eog image.png     /*eog means eye of gnome and allow you to display an image*/

if you want the fwhm in real time:

cd ngts/Observations
python get_fwhm.py /local/action1081

Bias

  • ngbiasframes

End of night

  • Park the telescope using
    • ngpark
  • Close the terminals (paladin, ds9 and xobs) using ctrl-c
  • Heat the ccd slowly using the command
    • /ngts/Observations
    • python ShutDownCam.py
  • Shutdown the telescope, put the cover and the humidifier