Subject: 2.5m obslog 20250907 (SJD 60926) From: dmbiz@apo.nmsu.edu Date: Mon, 8 Sep 2025 11:41:41 +0000 (UTC) APACHE POINT OBSERVATORY SDSS 2.5M OBSERVING LOG Sunday September 07, 2025 (SJD 60926) ---- Observing Team ---- Dmitry Bizyaev Kaike Pan (remotely) Conor Sayres (remotely) Jose Sanchez-Gallego (remotely) ---- Observing Plan ---- Start optical collimation. ---- Observing Summary ---- The night was clear, with almost full Moon. The optical collimation started tonight. I had Kaike and Conor and later Jose joined the process. After finishing home-relaxing and setting up engineering camera, we spent a lot of time to understand why we don't see stars in the images. We ended up with hunting for glow from Vega, and we were able to ackquire it and then to understand that correct focus is in the very high values, over 5000. At the same time, we hit the A,B,C M2 piston limit and were unable to completely focus the telescope. Kaike also noticed that new default.dat should be used. New home-relaxing procedure was run, but checking stars after that came to the same conclusion - we are unabe to focus telescope with current mirror settings. On the positive side, after some adjustment of the focus we were able to get stars into the fueld without applying any additional offsets. An offset of -90" in RA brings up stars closer to the center. See log for additional information and for the guider (engcam) exposure numbers. - at the beginning of the night a ~37 sec delay was found between a motion command issuing in STUI and the actual motion start. Jose was informed and he fixed the problem. We'll test it more tomorrow. ---- Engineering Issues ---- - 2 fans on the back wall of the MCP rack in the lower enclosure are not turned on. ---- Software Issues ---- Apparently, MCP time set to UT instead of TAI led to fixed delay between issuing command in STUI and moving telescope actually. Jose was informed and, aparenty, resolved the problem. ---- Observing Log ---- Afternoon --------- Checked actors and hardware on the telescope, downstairs and upstairs. Everythong looks working. Started APOGEE calibrations, successfully. When moved axes on the telescope, doscovered a strange thing. All commands that involve axes are executed, but with a delay. The delay is stable and suspiciously resembles 37 sec TAI - UT difference. This is all about commands issues from STUI. Commands from MCP are executed immediately. I tried to primitively synchronized via "mcp info" or to see exact delay via the "tcc show time", but it didn't help. 00:45Z started ventilation. - Status, 2025-09-08, 02:01:56 cwPositions = 35 35 35 35; MCP instr = 19 (mounted); ---------- motorPosition sp1: 0, 0, 0; ---------- Median spectrographs temperatures: Tsp1= 9.5 Outside air temperature= 0.0; ---------- Boss CCD Temp : sp1r0= -126.6 (-126.6); sp1b2= -101.2 (-100.0); sp1LN2: 10.0; ---------- Apogee: vacuum = 6.1e-07 ( 85 ) ---------- Weather: Humidity = 54.0 % AirTemp = 15.5 C, DpTemp = 6.2 C diff= 9.3 C wind25m = 9.7 mph, direction = 12.9 deg ---------- 00:26:09 apogee exposure file= apRaw-53640001 3 B ArcLamp 00:34:17 apogee exposure file= apRaw-53640002 60 B Dark 00:45:17 apogee exposure file= apRaw-53640003 10 A QuartzFlat 00:47:11 apogee exposure file= apRaw-53640004 12 B ArcLamp 00:49:24 apogee exposure file= apRaw-53640005 40 B ArcLamp 00:56:41 apogee exposure file= apRaw-53640006 12 A ArcLamp 00:58:53 apogee exposure file= apRaw-53640007 40 A ArcLamp 01:06:19 apogee exposure file= apRaw-53640008 60 A Dark 01:17:18 apogee exposure file= apRaw-53640009 30 A ArcLamp 01:22:41 apogee exposure file= apRaw-53640010 30 B ArcLamp After some ventilation, M1/M2 home/relax prodedure started. 0 0 i maxIter=1; desOrient=0.00,-18.50,-7.80,-427.00,-998.00,0.00; desOrientAge=3925.96; desEncMount=9817.60,-314.18,6746.64,19170.53,-3541.29,-3240.02; homing=0,0,0,0,0,0 0 0 i state=Done, 0, 1, 0.00, 0.00 0 0 i axisHomed=1,1,1,1,1,1 0 0 i encMount=9800.00,-300.00,6750.00,19150.00,-3550.00,-3250.00 0 0 i orient=0.00,-18.23,-7.90,-427.17,-999.00,0.00; actMount=9799.99,-299.99,6749.99,19149.99,-3550.00,-3250.00; cmdMount=9800.00,-300.00,6750.00,19150.00,-3550.00,-3250.00 home E, F 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 999999999, 000000000, -000000050", "999999999, 999999999, 999999999, 999999999, 000000000, -000000050 position error" 3 iterations home D 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 000000050, 999999999, 999999999", "999999999, 999999999, 999999999, 000000050, 999999999, 999999999 position error" 2 iterations home A, B, C 0 2 i unknownReplyKey="position error", "000000000, -000000050, -000000050, 999999999, 999999999, 999999999", "000000000, -000000050, -000000050, 999999999, 999999999, 999999999 position error" 1 iteration move 0.00,-18.50,-7.80,-427.00,-998.00 0 0 i state=Done, 0, 1, 0.00, 0.00 02:12:16 .tcc 0 tcc : JobStatus=relax,Done M2 homing D = 0 E = 0 home D 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 000000000, 999999999", "999999999, 999999999, 999999999, 000000000, 999999999 position error" 2 iterations home E 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 999999999, 000000000", "999999999, 999999999, 999999999, 999999999, 000000000 position error" 2 iterations home A, B, C 0 2 i unknownReplyKey="position error", "-000000152, 000000043, -000000014, 999999999, 999999999", "-000000152, 000000043, -000000014, 999999999, 999999999 position error" 7 iterations Set A, B, C to 0 02:34:12 CmdDone: APO.dmbiz 85 tcc proc enable collimate Ecamera setup Here we have some differences from our traditional instructions. Eups is out of business, so I used "module load" instead of "setup" command. 03:02:10 APO.dmbiz 88 ecamera : text="Pong." 03:40Z eCam stage is homed. Trying to take a dark with ecamera, but the guider dark time=20 stack=9 command fails. At the same time, direct ecamera exposure is attempting to run: 03:48:37 CmdStarted: APO.dmbiz 107 ecamera expose time=1 Follows by 03:48:39 APO.dmbiz 107 ecamera f exposureState="failed",0.0,0.0; text="no available dark frame for this MJD." Ok, if I change "guider" to "ecamera", then I can take darks with stacking and a flat. The guider command was fixed with "guider LoadCartridge" (like this, no parameters) command. Then the "guider" commands from the manual started working. 04:06:59 APO.dmbiz 135 guider f guideState="failed"; text="analyzeDark failed. Error reading/processing guider dark." 04:06:59 CmdDone: APO.dmbiz 135 guider dark time=20 stack=9 Flat 60 sec: gimg-0008 - ~41K signal 04:17Z enclosure open. For the next step and FK5 star was searched for. Direct application of command didn't bring up any signal in CCD. With KAike and Conor and later Jose in STUI we explore severl dimensions. We ensured that light was seen from flats, and that sky exposures with flats (as exp type in command) and objects looks the same. Then we moved telescope closer to the Milky Way plane and didn't get anything, even with 5-min exposures. Then we tried pointing at M13 cluster, and didn't get any signal. As a last resort, we moved to Vega and didn't get any signal. Then we started offseting back and for swinging, and finally caught a ray of glare. Pulling the net, applying various offset, we were able to catch Vega to the chip. It was looking like a huge donut, which was centered. Surprisingly, the center position was offset from the original Vega's coordinates by only -90 arcsec i RA. In the Dec it was at the right place. Then we tried to focus the huge donut and ran the focus until 5000. The docun became definitely better at 5000, but stil was a dunut. Any attempt to move beyond 5000, even 5050, led to the A, B, C M2 pistons started hitting their limits. Then we acquired an FK5 star, and it went to a corner of the chip without offsets. For a reference, gimg-0076 - focus =0 gimg-0075 - focus =1000 gimg-0074 - focus =2000 gimg-0073 - focus =3000 gimg-0072 - focus =4000 gimg-0070 - focus =5000 Kaike suggest to home-relax mirrors again and see if it changes things. 08:00:04 CmdDone: APO.dmbiz 462 tcc proc disable collimate 0 2 i maxIter=1; desOrient=0.00,0.00,0.00,0.00,0.00,0.00; desOrientAge=16723.71; desEncMount=8600.00,-150.00,7800.00,34500.00,10950.00,10950.00; homing=0,0,0,0,0,0 home E, F 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 999999999, 000000050, 000000050", "999999999, 999999999, 999999999, 999999999, 000000050, 000000050 position error" 1 iteration home D 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 000000050, 999999999, 999999999", "999999999, 999999999, 999999999, 000000050, 999999999, 999999999 position error" 2 iterations home A, B, C 0 2 i unknownReplyKey="position error", "-000000050, 000000000, 000000000, 999999999, 999999999, 999999999", "-000000050, 000000000, 000000000, 999999999, 999999999, 999999999 position error" 1 iteration 0 2 i maxIter=1; desOrient=0.00,0.00,0.00,0.00,0.00,0.00; desOrientAge=18.90; desEncMount=8600.00,-150.00,7800.00,34500.00,10950.00,10950.00; homing=0,0,0,0,0,0 08:13:21 .tcc 0 tcc : JobStatus=relax,Done M2 home D 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 000000000, 999999999", "999999999, 999999999, 999999999, 000000000, 999999999 position error" 1 iteration home E 0 2 i unknownReplyKey="position error", "999999999, 999999999, 999999999, 999999999, 000000000", "999999999, 999999999, 999999999, 999999999, 000000000 position error" 1 iteration home A,B,C 0 2 i unknownReplyKey="position error", "-000000089, -000000033, 000000056, 999999999, 999999999", "-000000089, -000000033, 000000056, 999999999, 999999999 position error" 3 iterations 08:28:54 CmdDone: APO.dmbiz 464 tcc proc enable collimate New mirros numbers are saved as nominals. Checked with command tcc track/pterr 60, 55 obs /rotty=obj /rota=0/magRange=(7.0,8.) and find a donut of the star in the chip. Foc = 0 - exposure gimg-0077. foc = 2000 - exposure gimg-0078. The exposures show the same trend - right focus value is very high - abpve 5000, which exceeds the A,B,C M2 piston limit. 09:01Z enclosure closed. LN2 fill started. Home BOSS collimators 09:19:39 APO.dmbiz 479 boss i motorStatus=0x85,0x85,0x85 09:19:39 APO.dmbiz 479 boss i motorPosition=4,0,-2 reverse limits: a = -30655 b = -28020 c = -29680 09:37:23 CmdDone: APO.dmbiz 499 boss zeroMotors spec=sp1 boss moveColl spec=sp1 piston=25000 The rest of the night was spent on looking for our documentation for the BOSS spectrograph settings. All links point at sdss-gateway, which was disconnected last year in the process of optimization. I'll contact Kaike for the further clarification. 11:35Z calling it a night. Started APOGEE calibrations. ---- Mirror Numbers ---- PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0140 0.0150 Axial B: -0.0009 -0.0009 Axial C: -0.0220 -0.0210 Trans D: 0.1520 0.0110 Lateral E: 0.3380 0.3380 Lateral F: 0.5450 0.5450 GALILS Commanded: 9800 -300 6750 19150 -3550 -3250 Actual: 9800 -300 6750 19150 -3550 -3250 SETMIR VALUES PrimDesOrient: 0.0 -18.5 -7.8 -427.0 -998.0 PrimOrient: 0.0 -18.23 -7.9 -427.17 -999.0 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -6.5010 -0.0280 Axial B: -6.3460 -0.0670 Axial C: -6.4770 0.2340 Trans D: 0.1070 -0.0060 GALILS Commanded: 803050 738450 853150 -1800 -7800 Actual: 844376 772275 866864 -1800 -7800 SETMIR VALUES SecDesOrient: 657.0 -24.5 -17.5 18.0 125.41 SecOrient: 657.02 -24.5 -17.53 18.04 125.77 MIRROR NUMBERS AFTER M1/M2 HOME/RELAXING: PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0130 0.0150 Axial B: -0.0007 -0.0009 Axial C: -0.0180 -0.0210 Trans D: 0.1650 0.0110 Lateral E: 0.3380 0.3380 Lateral F: 0.5445 0.5450 GALILS Commanded: 9800 -300 6750 19150 -3550 -3250 Actual: 9800 -300 6750 19150 -3550 -3250 SETMIR VALUES PrimDesOrient: 0.0 -18.5 -7.8 -427.0 -998.0 PrimOrient: 0.0 -18.23 -7.9 -427.17 -999.0 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -6.5490 -0.0280 Axial B: -6.3660 -0.0670 Axial C: -6.5070 0.2340 Trans D: 0.1060 -0.0060 GALILS Commanded: 864650 796800 924850 -1800 -7800 Actual: 844350 772369 866750 -1800 -7800 SETMIR VALUES SecDesOrient: 657.0 -24.5 -17.5 18.0 125.41 SecOrient: 657.08 -24.59 -17.52 18.05 125.82 AFTER SAVING NOMINAL MIGS: PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.0130 0.0130 Axial B: -0.0007 -0.0007 Axial C: -0.0180 -0.0180 Trans D: 0.1650 0.1650 Lateral E: 0.3380 0.3380 Lateral F: 0.5445 0.5445 GALILS Commanded: 9800 -300 6750 19150 -3550 -3250 Actual: 9800 -300 6750 19150 -3550 -3250 SETMIR VALUES PrimDesOrient: 0.0 -18.5 -7.8 -427.0 -998.0 PrimOrient: 0.0 -18.23 -7.9 -427.17 -999.0 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -6.5490 -6.5490 Axial B: -6.3660 -6.3670 Axial C: -6.5070 -6.5070 Trans D: 0.1070 0.1070 GALILS Commanded: 864500 796900 924700 -1750 -7750 Actual: 844231 772180 866788 -1750 -7750 SETMIR VALUES SecDesOrient: 657.0 -24.5 -17.5 18.0 125.41 SecOrient: 656.98 -24.6 -17.54 18.04 124.69 Mirror numbers after the second in the night Home/Relaxing. PRIMARY: -------- Scale: 1.000000 MIGS TONIGHT NOMINAL Axial A: 0.1020 0.0130 Axial B: -0.0008 -0.0007 Axial C: -0.1040 -0.0180 Trans D: -0.8230 0.1650 Lateral E: 0.3550 0.3380 Lateral F: 0.5565 0.5445 GALILS Commanded: 8600 -150 7800 34500 10950 10950 Actual: 8600 -150 7800 34500 10950 10950 SETMIR VALUES PrimDesOrient: 0.0 0.0 0.0 0.0 0.0 PrimOrient: 0.0 0.0 0.0 0.0 0.0 SECONDARY: ---------- Focus: 0.0000 Air temp: 0.00 Altitude: 30.0 MIGS TONIGHT NOMINAL Axial A: -6.5160 -6.5490 Axial B: -6.3770 -6.3670 Axial C: -6.5320 -6.5070 Trans D: 0.1720 0.1070 GALILS Commanded: 837700 807650 948300 -1950 -1450 Actual: 819191 770688 893018 -1950 -1450 SETMIR VALUES SecDesOrient: 657.0 -36.7 -7.7 -49.6 63.31 SecOrient: 656.87 -36.63 -7.72 -49.5 62.91 ---- Telescope Status ---- 00:45Z Started ventilation 04:17Z encl25m : open 09:01Z encl25m : closed No interlocks bypassed Status at: 11:40Z Telescope stowed at: 121.0, 30.0, 0.0 mount Instrument mounted: engCamera Counterweights at: 35 LN2 autofill systems: Connected and turned on 180L LN2 dewar scales: SP1 236 lbs, 22 psi ---- Software Used ---- STUI : 1.7.19 alerts : 2.3.0 boss : 6.0.3a0 -boss.specMec : 3.0.4 apo : 4.1.0 fliswarm : 0.5.1a0 jaeger : 1.10.2 kaiju : 1.4.1 coordio : 1.17.0 fps_calibrati : 2025.02.24+6af8363 cherno : 1.1.0 astrometrynet : 0.93 hal : 1.4.1 hartmann : 2.0.2 hub : 5.0.1a0 mcp : 2.1-6-g17da -mcp.plc : 35 -mcp.azFiduci : v1_148 -mcp.altFiduc : v1_148 -mcp.rotFiduc : v1_150 tcc : 1.4.0 apogee : not availble apogeecal : not availble apogeeql : v1_7_0dev STUIAdditions : FAILED --------------Other Versions-------------- sdss-obstools : 3.9.3 TPM : 1.2-31-gd7eb MCP : 2.1-13-g4fb8 idlspec2d : v6_2_1 Kronos : 2.1.0a roboscheduler : 2.1.0 /dev/sdb1 2.0T 464G 1.6T 23% /home /dev/sdd1 22T 11T 11T 50% /data ---- APOGEE Data Summary ---- APOGEE data list, mjd=60926, all raw_data: /data/apogee/utr_cdr/60926/apRaw-*.fits archive: /data/apogee/archive/60926/apR-[a,b,c]-*.apz quickred: /data/apogee/quickred/60926/apq-*.fits ------------------------------------------------------------------------------ mjd i UT File/Exp Imtype Nread A/B Dth Design-Cfg Arch Offset %Flux/FPI Comm ------------------------------------------------------------------------------ 60926 1 00:26 53640001 Arc---- 3 B 13.5 ---------- a-b-c - -21 test 60926 2 00:44 53640002 Dark 60 B 13.5 ---------- a-b-c - - 60926 3 00:46 53640003 QuarFlat 10 A 13.0 ---------- a-b-c - - 60926 4 00:48 53640004 Arc-Thar 12 B 13.5 ---------- a-b-c err - 60926 5 00:56 53640005 Arc-Une 40 B 13.5 ---------- a-b-c - - 60926 6 00:58 53640006 Arc-Thar 12 A 13.0 ---------- a-b-c err - 60926 7 01:05 53640007 Arc-Une 40 A 13.0 ---------- a-b-c - - 60926 8 01:16 53640008 Dark 60 A 13.0 ---------- a-b-c - - 60926 9 01:22 53640009 Arc---- 30 A 13.0 ---------- a-b-c - 107 FPI A 60926 10 01:27 53640010 Arc---- 30 B 13.5 ---------- a-b-c - 107 FPI B cannot read file : /data/apogee/utr_cdr/60926/apRaw-53640011.fits ------------------------------------------------------------------------------ ---- Weather Log ---- Wind 1 um DIMM IRSC Time Temp C Dewp C MPH Dir Dust fwhm mean sigma 18:00 14.7 6.9 11.2 54.6 dpDep 18:15 15.1 8.1 9.2 43.8 442 18:30 15.7 8.5 7.1 68.5 498 18:45 15.4 8.5 4.8 40.9 433 19:00 17.2 8.8 1.8 37.8 dpDep 19:15 15.2 9.1 13.4 36.5 458 19:30 15.8 9.6 1.9 49.6 460 19:45 15.1 8.7 9.4 30.0 494 20:00 16.1 10.5 3.4 55.8 446 20:15 16.0 9.7 16.8 07.7 dpDep 20:30 16.3 9.9 9.3 62.6 467 20:45 17.7 10.7 7.3 79.9 439 21:00 16.8 9.3 6.5 80.3 451 21:15 16.8 8.1 12.1 87.5 396 21:30 17.2 8.9 6.2 64.3 341 21:45 15.6 8.1 10.6 26.8 377 22:00 16.4 8.1 4.3 07.3 362 22:15 16.2 7.1 10.9 29.6 385 22:30 17.6 8.1 8.4 76.1 380 22:45 17.1 7.3 11.1 49.6 416 23:00 16.8 6.9 16.9 12.5 396 23:15 16.9 7.1 11.7 36.1 456 23:30 16.7 7.0 7.2 39.3 397 23:45 17.0 6.8 3.1 10.4 398 00:00 16.6 5.9 14.0 12.5 448 00:15 16.9 5.8 3.5 43.4 344 00:30 16.6 6.1 7.1 98.2 384 00:45 16.2 5.9 5.1 16.1 350 01:00 16.2 5.7 7.8 32.5 378 01:15 15.9 5.9 0.9 17.2 403 01:30 15.6 6.2 4.9 57.9 415 01:45 15.5 6.4 7.5 3.2 451 02:00 15.4 6.3 8.8 14.2 436 02:15 15.5 4.8 14.0 40.6 486 02:30 15.6 3.6 11.5 48.9 473 02:45 15.6 3.4 14.2 43.1 532 03:00 15.8 3.2 11.8 24.6 527 342 3.03 03:15 15.7 2.7 13.5 18.7 525 343 2.92 03:30 15.9 2.3 11.2 23.1 584 343 3.54 03:45 15.8 2.5 6.9 17.7 592 342 2.60 04:00 15.5 2.6 6.1 31.7 619 342 2.03 04:15 14.8 2.9 5.8 72.3 510 342 2.13 04:30 15.1 2.5 7.4 43.7 505 342 2.23 04:45 14.3 2.2 3.8 16.1 614 342 2.24 05:00 15.1 2.1 2.5 31.5 570 342 2.35 05:15 15.4 2.4 1.0 31.7 603 342 1.92 05:30 15.4 2.3 5.1 59.5 545 342 2.12 05:45 15.5 2.6 1.9 43.7 577 342 2.42 06:00 15.4 2.8 2.3 50.9 597 342 2.25 06:15 15.5 2.7 1.0 54.3 554 342 2.08 06:30 15.5 3.6 1.1 22.8 517 342 2.43 06:45 15.6 3.2 1.0 27.6 537 342 2.70 07:00 13.4 7.3 3.0 37.0 618 342 2.38 07:15 13.1 7.8 2.0 23.7 dpDep 342 3.53 07:30 15.2 3.4 1.0 27.6 742 342 2.89 07:45 15.3 4.4 1.5 40.5 590 342 2.56 08:00 15.0 5.2 1.2 22.2 538 342 2.11 08:15 14.9 5.9 2.7 57.7 482 342 1.77 08:30 14.9 6.2 2.0 49.2 469 342 3.01 08:45 14.6 6.1 5.1 66.4 473 342 2.19 09:00 14.6 6.3 4.9 67.4 452 342 2.16 09:15 14.4 6.2 4.4 64.5 500 342 3.05 09:30 14.7 6.1 4.0 59.0 472 342 2.17 09:45 14.8 5.8 2.9 40.1 442 342 1.78 10:00 14.7 5.5 2.9 43.5 480 342 2.15 10:15 14.6 5.9 2.9 56.3 451 342 3.45 10:30 14.7 5.7 2.0 41.5 461 342 4.10 10:45 14.3 5.9 4.4 52.6 470 342 2.69 11:00 13.9 6.4 4.0 32.0 482 342 2.31 11:15 14.2 6.4 1.5 37.3 488 342 2.33 11:30 14.3 6.2 2.0 41.0 479 342 2.65 ---- Time Tracking ---- *=*=*= Observatory: APO *=*=*= MJD: 60926 Fill night time in Hours below *=*=*= Total bright time : 10.1 *=*=*= Bright time, queued observations : 0 *=*=*= Bright time, commissioning/engineering: 10.1 *=*=*= Bright time lost to weather : 0 *=*=*= Bright time lost to technical issues : 0 *=*=*= Total dark time : 0 *=*=*= Dark time, queued observations : 0 *=*=*= Dark time, commissioning/engineering : 0 *=*=*= Dark time lost to weather : 0 *=*=*= Dark time lost to technical issues : 0