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Extended SV Schedule and plans

Calendar

Date Day Observers Run Manager SISPI Support Twilight (End/Begin) Moon rise/set/phase
12/02/2012 Sunday Buckley, Annis (Remote) Honscheid 22:07 - 04:59 23:30 / -- / 83%
12/03/2012 Monday Buckley, Annis (Remote) Honscheid 22:08 - 04:59 00:07 / -- / 75%
12/04/2012 Tuesday Buckley, Annis (Remote) Honscheid 22:09 - 04:59 00:43 / -- / 66%
12/05/2012 Wednesday Buckley, Annis (Remote) Elliott 22:10 - 04:59 01:17 / -- / 56%
12/06/2012 Thursday Buckley, Lin Annis Elliott 22:11 - 04:59 01:53 / -- / 46%
12/07/2012 Friday Buckley, Lin Annis Elliott 22:12 - 04:59 02:29 / -- / 35%
12/08/2012 Saturday Buckley, Lin Annis Elliott 22:13 - 04:59 03:09 / -- / 25%
12/09/2012 Sunday Buckley, Lin Annis Elliott 22:13 - 04:59 03:53 / -- / 16%
12/10-14 No DES
12/15/2012 Saturday Patton, Armstrong Diehl Patton 22:18 - 05:00 -- / 23:00 / 10%
12/16/2012 Sunday Patton, Armstrong Diehl Patton 22:19 - 05:00 -- / 23:43 / 18%
12/17/2012 Monday Patton, Armstrong Diehl Patton 22:19 - 05:01 -- / 00:22 / 28%
12/18/2012 Tuesday Patton, Armstrong Diehl Patton 22:20 - 05:01 -- / 00:58 / 38%
12/19/2012 Wednesday Patton, Armstrong Diehl Patton 22:20 - 05:01 -- / 01:32 / 48%
12/20/2012 Thursday Patton, Annis Diehl Patton 22:21 - 05:02 -- / 02:06 / 58%
12/21/2012 Friday Patton, Annis Diehl Patton 22:21 - 05:02 -- / 02:41 / 68%
12/22/2012 Saturday Patton, Annis Diehl Patton 22:22 - 05:03 -- / 03:17 / 76%
12/23/2012 Sunday James, ? (Remote) Honscheid 22:23 - 05:04 -- / 03:56 / 84%
12/24-27 No DES
12/28/2012 Friday James, Ogando Reil, Old 22:26 - 05:05 20:53 - 07:52 / 99%
12/29/2012 Saturday James, Ogando Reil, Old 22:26 - 05:06 21:34/ -- / 97%
12/30/2012 Sunday James, Ogando Reil, Old 22:26 - 05:07 22:13/ -- / 93%
12/31/2012 Monday James, Ogando Reil, Old 22:26 - 05:08 21:49/ -- / 87%
01/01/2013 Tuesday James, Ogando Reil, Old 22:26 - 05:08 23:23/ -- / 80%
01/02/2013 Wednesday James, Ogando,Helsby Reil, Old 22:26 - 05:09 23:58/ -- / 71%
01/03/2013 Thursday Ogando, Helsby Reil, Old 22:26 - 05:10 00:33/ -- / 61%
01/04/2013 Friday Ogando, Helsby Reil, Old 22:26 - 05:11 01:11/ -- / 50%
01/05/2013 Saturday Ogando, Helsby Reil, Old 22:26 - 05:12 01:52/ -- / 39%
01/06/2013 Sunday Ogando, Helsby Reil, Old 22:26 - 05:13 02:38/ -- / 28%
01/07/2013 Monday Ogando, Helsby Reil, Old 22:26 - 05:14 03:29 - 16:40/ 18%
01/08/2013 Tuesday Ogando, Helsby Old 22:26 - 05:15 04:27 - 17:46/ 10%
01/09 - 12 No DES
01/13/2013 Sunday Hoffman, Nichol Gerdes, Old 22:24 - 05:21 -- / 22:11/ 7%
01/14/2013 Monday Hoffman, Nichol Gerdes, Old 22:24 - 05:22 -- / 22:50/ 14%
01/15/2013 Tuesday Hoffman, Nichol Gerdes, Old 22:23 - 05:23 -- / 23:26/ 22%
01/16/2013 Wednesday Hoffman, Nichol Gerdes, Old 22:23 - 05:24 -- / 00:01/ 31%
01/17/2013 Thursday Hoffman, Nichol Gerdes, Old 22:23 - 05:25 -- / 00:37/ 41%
01/18/2013 Friday Hoffman, Nichol Gerdes, Old 22:22 - 05:26 -- / 01:13/ 51%
01/19/2013 Saturday Hoffman, Nichol Gerdes, Old 22:21 - 05:27 -- / 01:51/ 60%
01/20/2013 Sunday Hoffman, Nichol Gerdes, Old 22:21 - 05:29 -- / 02:31/ 70%
01/21/2013 Monday Hoffman, Nichol Gerdes, Old 22:20 - 05:30 16:26 - 03:15/ 78%
01/22/2013 Tuesday Hoffman, Old Gerdes 22:20 - 05:31 17:16 - 04:02/ 85%
01/23 - 28 No DES
01/29/2013 Tuesday Old, Kunder Soares-Santos, Rooney 22:14 - 05:39 22:00/ -- / 91%
01/30/2013 Wednesday Old, Kunder Soares-Santos, Rooney 22:13 - 05:40 22:36/ -- / 84%
01/31/2013 Thursday Old, March Soares-Santos, Rooney 22:13 - 05:41 23:12/ -- / 75%
02/01/2013 Friday Nord, March Soares-Santos, Rooney 22:12 - 05:43 23:51/ -- / 65%
02/02/2013 Saturday Nord, March Soares-Santos, Rooney 22:11 - 05:44 00:34/ -- / 55%
02/03/2013 Sunday Nord, March Soares-Santos, Rooney 22:10 - 05:45 01:22/ -- / 43%
02/04/2013 Monday Rooney, March Nord 22:09 - 05:46 02:16/ -- / 32%
02/05/2013 Tuesday Casas, March Nord, Rooney 22:08 - 05:47 03:15 - 16:35/ 22%
02/06/2013 Wednesday Casas, March Nord, Rooney 22:07 - 05:48 04:18 - 17:34/ 13%
02/07/2013 Thursday Casas, March Nord, Rooney 22:06 - 05:49 05:24 - 18:28/ 06%
02/08/2013 Friday Casas, March Nord, Rooney 22:05 - 05:51 06:30 - 19:18/ 02%
02/09 - 16 No DES
02/17/2013 Sunday Mccrann, Suchyta Annis 21:55 - 06:00 -- / 01:11/ 52%
02/18/2013 Monday Mccrann, Suchyta Annis 21:53 - 06:01 -- / 01:56/ 61%
02/19/2013 Tuesday Mccrann, Suchyta Annis 21:52 - 06:02 -- / 02:44/ 70%
02/20/2013 Wednesday Mccrann, Suchyta Annis 21:51 - 06:03 16:44 - 03:36/ 79%
02/21/2013 Thursday Mccrann, Suchyta Annis 21:50 - 06:04 17:27 - 04:29/ 86%
02/22/2013 Friday Mccrann, Suchyta Annis 21:48 - 06:05 18:08 - 05:24/ 92%
02/23/2013 - Season 1 No DES

For continued 2013 schedule, see Operations page

Nightly Schedule

  1. Be sure a fresh SISPI instance has been started during the day.
  2. ~4 or 5 PM: Telescope to white spot, dark dome, Vsub on & flush, take bias/dome flat sequence. Select DECam Script: DES/sv_prenight_bias_grizYdomes.json
  3. Dinner! Service ends 7:30 PM.
  4. Sunset - 1 hr: Vsub should be off, open dome. Ephemeris: http://www.ctio.noao.edu/obsaid/ctio_ephem_2013.html#Jan
  5. PM Sunset + 30 min: OK to check dome lights off, Vsub on, flush image, Rasicam on, QR started
  6. Push the Hexapod GUI "Init z Trim" button. We are not using "Set Ref. Temp." at this time.
  7. Ask for TELOPs to check that the handset gui at TelOps station, once getZp is issued, reads (RA,DEC) 0", -297".
    *If it says 14.3 and -268", that's ok.
    *This places the star in the gap between S4 and N4 until the TCS is rebooted or another observer changes it.
  8. PM Twilight - 45 min (really): Standard-star sequence. Always need to hit at least one of the SDSS standard fields each night. Select DECam Scripts from February_Standards_json_grizY (or February_Standards_json_ugrizY if u-band DES observations are planned). A night-by-night list of recommended fields to observe can be found on the February_Standards page. See Sky_Brightness_Measurements for results on how the sky darkens during twilight and when successful standards measurements can be taken.
  9. PM Twilight - 20 min (really): Begin observations (izY ok; gr may want to wait a few more minutes)
  10. Midpoint of night, or end of half-night shift: one or two standard fields, skip if thick clouds. Select DECam Scripts from February_Standards_json_grizY (or February_Standards_json_ugrizY if u-band DES data were observed). Night-by-night recommendations can be found on the February_Standards page.
  11. If end of half-night shift, publish nightsum and complete CTIO end-of-night report.
  12. If full-night shift:
  13. AM Twilight + 20 min: Begin standard-star sequence. For end-of-night in late-February, select DECam Scripts from February_Standards_json_grizY (or February_Standards_json_ugrizY if u-band DES data were observed); use E6-A for the low-airmass field, E5-A for the low-/medium-airmass field, and E4-A for the high-airmass field.
    Some scripts are in "choose file -> DECam Observer -> ExposureScripts"
  14. Sunrise - 30 min: Must be closed up by this time.
  15. If you did not get successful dome flats in the evening: move telescope to white spot, dark dome, take bias/dome flat sequence with DECam Script: DES/sv_postnight_bias_grizYdomes.json. Normally should not need to do this, however, and just need to take short bias sequence only. Script??? will put in block filter and turn off Vsub.
  16. Publish NightSum
  17. Fill out CTIO end-of-night report
  18. Verify that block filter is in place and VSub is off and Dome Flat LEDs are off.
Wind Shake: Recommended that one pays attention to the wind speed, since wind can shake the telescope, especially with dome pointed into the wind (which is typically out of the North). Alistair suggests:
  • When wind speeds are >5-8 mph, ask the TelOp to raise the wind blind (closes the lower part of the dome slit).
  • When wind speeds are >15 mph, ask the TelOp to close the louver windows around the dome floor.
  • At low wind speeds, it's best to keep everything open to maximize ventilation of the dome.

Junk exposure: when you want to read out the array and have the image completely ignored by DESDM, hit the Manual button on the Exposure Control panel and enter the following. Always do this for the first exposure after turning Vsub on:

 obsType=zero, object=junk, dtsqueue=none 

Target priorities and procedures for Extended SV

  1. Any needed diagnostic images
    1. See specialized instructions below
  2. Complete all SN fields once per 4 days (2x each DES week of SV).
    1. Slew to desired field and stop queue using scripts e.g. DES/e1_slew.json, where e1->your current field.
    2. Run Kentools "center" command after readout to determine coordinate offset. If the command fails to find a solution then try expanding the search radius e.g. center "" 1200 (the "" will tell it to use the most recent image) where 1200 is the new pixel search radius (the default is 1024).
    3. Enter "center" output shifts as Delta RA coordinates for another 10s exposure. Push Expose button to place at top of queue, then push Go to start queue.
    4. For shallow fields: enter full observing sequence onto queue with script DES/sv_sn_yy_griz.json where yy is the name of the field (c1, e2, x1, etc).
    5. For deep fields (C3, X3): Enter the script DES/sv_sn[cx]3_y.json_ where y is desired filter.
    6. After 10s image has read out, re-run center to double-check that pointing is within 10" of desired location. If not, adjust & re-start SN script.
    7. Repeat the "center" procedure either before starting deep z band (if it's last) or after finishing it (if it's first), since coords may drift on 1-hour time scales.
  3. Minisurvey 1a+1b
    1. Obstac will choose these automatically once you Enable auto but we will want to enable this only when the equatorial tracking is improved.
    2. Because of a race condition in obstac, it is advisable to Enable auto to fill the queue during an exposure, but Disable auto before readout begins. Re-enable to restock the queue whenever it gets low.
  4. Maximimum Visibility and SPT-W Surveys
    1. Enable Auto to have obstac schedule these pointings.
  5. Standard Stars
    1. See Nightly Schedule (above)
    2. As we get later in the season some Standard Star fields will drop off the west.
      What to do about this.

Notes on specific nights.

Engineering half-nights 21, 22 Feb:

Night 1:

  1. 02:00 local time: E4, E5, E6 standards (15 min)
  2. 02:15: On-sky linearity test near Omega Cen (15 min)
  3. 02:30: Star flat sequence near Omega Cen (2hr 40 min)
  4. 04:00: (do this between filters of the star flats) - E4, E5, E6 standards (15 min)
  5. 05:10: ugr Tourist photos of Omega Cen (25 min)
  6. 05:35: izY Tourist photos of Omega Cent (20 min)
  7. 05:55: (35 min reserve)
  8. 06:30: E4, E5, E6 standards (in twilight).
  9. Remember we will want u-band dome flats for this night.
Night 2:
  1. 02:00: E4, E5, E6 standards (15 min)
  2. 02:15: COSMOS band 1, 33 x 110s exposures taken in AOS-focus-test mode (80 min)
  3. 03:35: E4, E5, E6 standards (15 min)
  4. 03:50 COSMOS band 2, 53 x 60s exposures taken in AOS-displacement-test mode (80 min)
  5. 05:10 COSMOS band 3, 33 x 110s exposures in AOS-focus-test mode (80 min) or 12x300s exposures, no AOS (66 min)
  6. 06:30: E4, E5, E6 standards (in twilight).
Night 2 Preliminary ideas for 4 PM meeting:
  1. Start of night, standards SDSSJ0200, SDSSJ0320, E3-A
  2. until 1:20: Obstac as suggested by Jim
  3. 1:20 - 1:35: Standards E4-A, E5-A, E6-A
  4. 1:35 - 2:55: COSMOS z-band with AOS best focus
  5. 2:55 - 4:15: COSMOS i-band with AOS best displacement (from 1:35 to 4:15 COSMOS airmass goes from ~1.2-->1.65)
  6. 4:15 - 4:30: Standards E4-A, E5-A, E6-A
  7. 4:30 - 4:45: Linearity i-band test near Omega Cen
  8. 4:45 - 6:30??
  9. 6:30: Twilight standards E4-A, E5-A, E6-A

If things are falling behind, drop observations in this order:

  1. izY Omega Cen tourist pix
  2. ugr Omega Cen tourist pix
  3. up to 2 of the night-time E456 standards exposures
  4. COSMOS exposures w/o AOS.
  • Last run, 17-22 Feb:
    • Standards-observing practice remains the same as before (3 at evening twilight, 1 at mid-night handover.)
      • Standards are lower priority than SPT-E: if you get a late start, do not use potential SPT time to get the standards.
    • Highest priority is to let Obstac exposure the SPT-E field. Eric to update the exposure table and set maximum airmass to 1.6.
      • Observers should pay attention as the midpoint of the night approaches to when obstac will give up on SPT-E and start queueing exposures on some apparently random region of the sky. This is your sign to move on to something else!
      • If seeing is consistently <1.2", then initiate Kevin's study of best-focus, described below. This piggybacks on normal obstac observing.
    • If seeing is >1.3" FWHM in rizY, observe SN fields if any are at airmass <2.
    • If seeing is <1.3" and no more SNe or SPT fields are reachable, then start izY observations of COSMOS fields. Huan will obtain relevant scripts
    • If nothing to do at end of last night, Feb 22, VVDS F14 spectroscopic training set field for photo-z calibration scripts here: vvds_F14_6point.tar 6 pointings per filter x (150 sec exposure + 30 sec overhead) per pointing = 1 hr 48 min total. u band is lowest priority, Y band is next lowest, with preferred filter order z,i,r,g,Y,u.

Note that the above priorities don't leave much to do in poor seeing after the SNe have set. Either Kevin/Aaron will provide useful donut tests, or we will plod along in SPT-E.

  • 29 Dec:
    • Ran evening twilight test. Reversed filter order to Yzirg as requested and ran SDSSJ0200 repeating from sun -6 degrees to -12 degrees.
    • Did X3 i (to make sure) and E1 E2 SN fields before they set. Obstac added east-commish fields (hoping for west-commish) so finishing missing SN fields then obstac on east-commish.
  • 28 Dec:
    • All SN fields were due a visit due to break. Started night with bias/flat and three standard star fields.
    • Followed with sn_c3_z and sn_x3_z per 4:00 meeting request.
    • Fill in x3_? and c3_? and continue to finish all SN fields.
    • A reminder to watch [[http://goo.gl/eRcsC]] for auto correlation jumps
  • 23 Dec:
    • Start SS at PM Twilight -50 minutes tonight, 10 minutes earlier than usual, as a test of SS sky background.
    • Skip SPT-W this night and go straight to SN.
    • SNae fields, in order: E1, E2, S1, X3riz, C1, C2, C3zigr.
      The last C# SN will finish, or get to airmass = 2 (stop), before the night runs out.
    • Then Obstac control of SPT-E
    • Late night SS
    • Observer should try to keep the data flowing and have some happy holidays.
      PSF FWHM
      Ellipticity
      Sky Background
  • 22 Dec:
    • Start SS at PM Twilight -50 minutes tonight, 10 minutes earlier than usual, as a test of SS sky background.
    • Test of Offset tweaks in both RA and DEC directions
    • Then Obstac control of SPT-W until it runs out (at about 11:30 PM)
    • Then SN fields X1,X2,S2,X3 until 1:30ish local time.
    • AO tests during the SN fields and maybe a little longer
    • Then Starflats
    • Then Obstac control of SPT-E
    • Morning SS
    • In the event of really bad seeing and cloudy conditions do SN until it improves.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Try to get guider plots for a representative set of images with moderate to poor ellipticity. Also if any sudden jumps are seen in the guider GUI, please note them.
  • 21 Dec:
    • Start SS at PM Twilight -50 minutes tonight, 10 minutes earlier than usual, as a test of SS sky background.
    • Then Obstac control of SPT-W
    • Test of Offset tweaks in both RA directions.
    • Then Obstac control of SPT-E
    • Late night SS
    • In the event of really bad seeing and cloudy conditions do SN until it improves.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Try to get guider plots for a representative set of images with moderate to poor ellipticity. Also if any sudden jumps are seen in the guider GUI, please note them.
      PSF FWHM
      Ellipticity
      Sky Background
  • 20 Dec:
    • Same, but this time without clouds.
  • 19 Dec:
    • Obstac Control of SPT-W as long as it will run.
    • Then Obstac Control of MaxVis.
    • If conditions permit we will take 2+2 images at low galactic latitude near the zenith for Aaron. Two will be out of focus by 1500 microns in z.
    • In the event of really bad seeing and cloudy conditions do SN until it improves.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Try to get guider plots for a representative set of images with moderate to poor ellipticity. Also if any sudden jumps are seen in the guider GUI, please note them.
  • 18 Dec:
    • Obstac Control of SPT-W as long as it will run.
    • Then Obstac Control of MaxVis.
    • In the event of really bad seeing and cloudy conditions do SN until it improves.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Try to get guider plots for a representative set of images with moderate to poor ellipticity. Also if any sudden jumps are seen in the guider GUI, please note them.
    • Because last night's late night standard star field E2-A is getting to low to observe in the morning, we have substituted E3-A for that.
  • 17 Dec:
    • Obstac Control of SPT-W until 11:30 PM, followed by AO Engineering Tests.
    • When those are finished, Obstac Control of MaxVis.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Also if any sudden jumps are seen in the guider GUI, please note them.
      PSF FWHM
      Ellipticity
      Sky Background
  • 16 Dec:
    • Obstac Control of SPT-W, followed by finish up SN fields x2 & s1 & s2 & C3-i-band, followed by Obstac Control of MaxVis.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Also if any sudden jumps are seen in the guider GUI, please note them.
      PSF FWHM
      Ellipticity
      Sky Background
  • 15 Dec:
    • Supernova fields will be due for reobservation since there has been a gap, so these are highest priority and will take all or nearly all night.
    • Proceed to obstac control if the SN fields are completed.
    • Observers should try to monitor the PSF ellipticity and note in the e-log if there are exposures which show large e, particularly if these incidents occur in the midst of a series of other exposures at same pointing that have lower e's. Also if any sudden jumps are seen in the guider GUI, please note them.
      PSF FWHM
      Ellipticity
      Sky Background
  • 3 Dec: Trial of new guider code. Complete SN deep fields X3 and C3. Tracking performance seems adequate to merit repeating the Minisurvey fields on Stripe 82, so configure Obstac to place a subset of MS1b at high priority, then SPT-W and MaxVis footprints at next priority.
    PSF FWHM
    Ellipticity
    Sky Backgorund
    TASCA Animated GIF
  • 2 Dec: Start the evening with a sweep through the SN fields as long as they are visible. MS should not be targeted by obstac until we verify better equatorial tracking. AM hours will go under obstac control to the MaxVis survey. Obstac configuration: If obstac knows about SPT-W and MaxVis, and has been told to ignore all MiniSurvey pointings, we will get the desired behavior since only MaxVis will be observable by the time Jim & Liz move off the SN fields. Be sure Obstac is willing to observe 20 min past start of morning twilight (104 degree sun altitude)
    PSF FWHM
    Ellipticity
    Sky Backgorund
    TASCA Animated GIF