Daytime DX LUT Measurement, etc. 20180503

18:20 Closed loop
  • First Bin 1, 400 modes
    • flat 20180503_90el_1.sav
  • Bin 4, 400 Hz, 36 modes,
  • Source at 27%, Pyramid see 11.9

18:25 Dark
  • LUCI2 71
  • TN 182505
  • Note, LUCI2 had N3.75 camera in. Should not make a difference for the Dark

18:36 Dark
  • LUCI2 73
  • TN 183621

18:38 Too bright on LUCI2
  • Source 25%, 13.1 mag
  • Too bright

18:41
  • Source at 25%, mag 13.9
  • Too bright

18:44 Bin 4, 200 Hz
  • Source at 25%, mag 13.9
  • Gain 2.0, 0.1, 0.1
  • Too bright

18:57 LUCI2 set
  • Source 24%, mag 14.4
  • Gain 2.0, 0.1, 0.1
  • N30 Alignment hole aligned

19:38 El = 90
  • Changed Rotator velocity to 2.5 from 5.0. With low light, Hard to keep up with TT offload when Rotating
  • TT LUT OFF
  • Bayside stages On
  • Gain 2.0, 0.1, 0.1
  • Source 24%, mag 15.3
  • Filter 1, #5, R=0.04%, T=99.6%. A bit more light on the Pyramid
  • First LUCI2 2, TN 193751 (only 2 TN for -90, gains were not correct for first TN)
    • Trouble keeping the loop closed. Set source to 25%, mag 14.6. I think it is the noise on CCD39 because the bayside stages are powered on.
    • Source on LUCI2 is a bit bright. Peak pixel value around 50000, near saturation
    • Next pass will try bin 4, 100 Hz
  • Last LUCI2 57, TN 201153

20:23 El=90
  • tried to run bin 4, 100 Hz, but could not correct telescope vibrations so smeared image. Back to bin 4, 200 Hz
  • First LUCI2 58, TN 202424
  • Last LUCI2 114, TN 205714

21:07 Set Rotation and move in elevation
  • Rot = 45 (off grid) (note, better image quality at 45 than at 15)
  • El = 90, LUCI2 115, TN 211339 (Move 5 degrees per data set)
    • El = 75->70 loop opened. Re closed

22:10 El = 30
  • bin4, 200 Hz
  • 24%, MAG 15.1
  • First LUCI2 130, TN 221020
    • At El = 180 loop opened. Had to close bin 1 to get good flat then retake rot=180 data. LUCI2 157-159 are no good, TN 222630 -> 222717
  • Restart at Rot = 180 LUCI2 160, TN 224744
  • Last LUCI2 189, TN 230501

23:31 Back to zenith. No time to take any measurements. A lot of vibrations.

-- %USERSIG{DougMiller - 2018-05-03}%
Topic revision: r3 - 04 May 2018, DougMiller
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