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Irshad Mohammed, 12/06/2016 11:41 PM


Observer2 Daily Checklist

(Author: Douglas Tucker; Created: 1 Oct 2013)

(Login info on white board in control room unless otherwise noted.)

See also Observer2 Setup Guide, Data Quality Operations, and End of Night Checklist.

Afternoon

  • Read plan for the night. (Linked in first column on shift calendar: 2016 = DESShiftsYr5)
  • Check quality of dome flats (using kentools):
    • Type "inv" to list exposures taken already.
    • Type "bigload <exp>" (where <exp> is the exposure number) for at least one of the dome flats in each filter band. Look for any obvious peculiarities.
    • Once the full dome flat sequence has finished, type "flatCheck".
      • Here is an example of a flatCheck plot . The red symbols should more-or-less lie within the cyan circles like in this plot.
      • Using the UNIX tool xv (or click on the Take Screenshot icon in the panel at top of upper left hand screen), grab the plot created by flatCheck, call it flatCheck-YYYYMMDD.png (where YYYYMMDD is today's local date), and upload to the DECam Electronic Logbook ("New Entry" > "Category: DECam Logbook", "Tags: Summary", "Attach Images" -> "Post").
  • Check ephemeris for tonight (using kentools):
    • Type "ephem"
  • Check weather forecast. (browser in top middle screen)
  • Start up a CTIO Night Report . (browser in bottom right screen)
    • You must first log into the http://www.ctio.noao.edu/ website (click on "login") - username astronomer, password can be obtained from telops if it is not on the white board behind observer1. The login session is saved as a cookie in the web browser.
    • This can be edited and saved throughout the night, and then finally submitted in the morning (saving time at the end of the night).
    • Before preparing a CTIO Night Report for the first time, see (currently doesn't work in Jan. 2014) this video tutorial

Beginning of the Night

  • Double check the run manager's list of evening twilight standard star fields to observe.
  • After the position Zeropoints observation has been made, run the kentools command "center".
    • Report the measured offsets to the Telescope Operator. Repeat process until offset is within 10".
    • Also post the measured offsets to the DECam Electronic Logbook .
      • Post it under "Category: DECam Logbook" and "Tags: Summary" so it gets netted up by the nightsum "makesum" at the end of the night.

During the Night

  • Scan the console clockwise from upper left:
    • weather: check wind speed, humidity
    • rasicam: clouds?
    • blanco prime focus cam: are the lights on? is the pupil clear of the slit edges?
    • quick reduce: what does the time history of seeing look like? The ellipticity? Correlations with wind, for example?
    • pointing: what is obstac pointing at now?
    • logging: anything that should go into the logbook? anything that should go into the draft night summary?
    • kentools: do a inv; load; seeingall. What images has obstac taken lately, what is the seeing on this image
    • godb: do a qcInv. What has the teff been lately?
    • ds9: what does the image look like?
    • what stellar mass is that huge beautiful galaxy? Jim's Stellar Mass Tool
      • start an xterm (on observer2); cd annis/smass; python; import galMass
      • thereafter, when you see a nice galaxy:
      • >>> galMass.show(ra, dec) # ra, dec is in decimal, only 2 decimal places needed (2' search radius)
        • # dist = 10.00 is a magic number, where the distance(zphot) < 2 Mpc and zphot >= -0.004667 (flagged
        • # dist = 20.00 is a magic number, where the zphot is < -0.004667
        • # disterr = 10.00 is a magic number, where ned-d didn't have an error estimate
        • # disterr = 14.28571429 is a magic number for distance from redshift
        • # disterr = 64.28571428 is a magic number for distance from photo-z
        • don't believe stellar masses when the g-i color is negative, there trust the abs mag
  • Also, occasionally (once every 1-2 hours) check the sky conditions by eye. Go outside, let your eyes dark adapt, and check the sky.
  • You may find load S12 "", load "" FN3, etc. useful for looking at individual sensors from the most recent image.
  • Note that in quick reduce, for FWHM versus time plot, DIMM (Differential Image Motion Monitor) tracks the atmospheric seeing (by tracking the jitter in star positions). The seeing shown in the plot is the quadrature sum of the DIMM and the instrumental seeing. A large difference between the two ( > 0.6-0.8) indicates a problem with the telescope (such as a mirror-cooling problem, dome temperature problem etc.) Example of Bad Seeing due to Telescope Problem
  • Record any problems, including bad exposures, in the DECam Electronic Logbook
    • See Introduction_to_the_nightsum for a description of what to record and which logbook categories to use.
    • When recording the raising or lowering of the Windscreens, please mention "windscreen" explicitly (to help those tracking the effects of the windscreen to search for windscreen entries in the eLog).
  • Work on developing any tools you would consider useful for checking on the data quality.

End of the Night

  • Get feedback on your CTIO Night Report and your draft "DES Night Summary" from Observer1.
  • Submit the DES Night Summary (see also Introduction_to_the_nightsum).
    • Cut-and-paste your draft DES Night Summary into the DECam Electronic Logbook
      • Use "Category: Synopsis_Night"
      • Click on "Textile formatted" button.
    • log into observer2 as user sispi (already done in top xterm, bottom left screen)
    • set up the environment:
      $ setup nightsum
    • run the makesum script:
      $ cd ~sispi/nightsum-reports
      $ makesum
    • Check your results by pointing your browser to
      file:///usr/remote/user/sispi/nightsum-reports/nightsum-<YYYY>-<MM>-<DD>/nightsum.html
    • In fact, makesum can open the newly generate summary automatically using the -o option:
      $ makesum -o
    • Go to the logbook and make changes as needed. Repeat the makesum step until you are happy with the results.
    • Publish the results so it shows up on the web server on des-ops.fnal.gov:
      $ cd ~sispi/nightsum-reports
      $ pubsum
    • NB The report is published at http://des-ops.fnal.gov:8080/nightsum/
    • If you need to edit or republish an old nightsum-report,
      makesum -D yyyy-mm-dd
      pubsum -D yyyy-mm-dd
  • Copy and paste the link of "DES Night Summary" you have just posted into the CTIO Night Report. Post the CTIO Night Report.
    • At the bottom of the CTIO Night Report webform, hit the "Finished editing the night report? Then click to send the Night Report email" button.
    • If you have previously saved an in-progress Night Report and return to it later, you may need to publish it by clicking on the "Publish" tab at the top of the page, instead of the button at the bottom.
    • If you need to change the CTIO Night Report after you have published it, you can find your report in the CTIO Reports Calendar and click on "Edit" from the Observer 2 console.
  • Clean up observer2 console.

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