CFHT, Instruments, Spectroscopy, Gecko: The Coudé f/4 Spectrograph

Gecko Runs for Semester 2001B


Weather

  1. C10 Shkolnik - Aug. 25/26 - photometric, dec. oscillations introduce variations in flux of Exposure Meter
  2. C10 Shkolnik - Aug. 26/27 - high humidity at beginning
  3. C10 Shkolnik - Aug. 27/28 - high humidity at beginning, 2.5 hours lost to weather
  4. C10 Shkolnik - Aug. 28/29 - bad guiding, up to 1/2 flux lost for the whole run
  5. C10 Shkolnik - Aug. 29/30 - almost completely lost ot weather
  6. D4 Manset - Sept. 6/7 - lost to fog
  7. D4 Manset - Sept. 7/8 - photometric
  8. C4 Bohlender - Sept. 8/9 - photometric
  9. C4 Bohlender - Sept. 9/10 - photometric
  10. C37 Fulbright - Sept. 28/29 photometric all night
  11. C37 Fulbright - Sept. 29/30 photometric at the beginning
  12. C37 Fulbright - Sept. 30/1 not always photometric - some flux lost to hotspot moving around and guiding
  13. C19 Weiss - Oct. 1/2 photometric
  14. C19 Weiss - Oct. 2/3 photometric
  15. C19 Weiss - Oct. 3/4 thin cirrus started at 21h
  16. F22 Roueff - Oct. 4/5 engineering during fog, cirrus, seeing very bad
  17. F22 Roueff - Oct. 5/6 a few cirrus, very bad seeing
  18. F22 Roueff - Oct. 6/7 photometric with bad seeing until 0h, then fog
  19. F22 Roueff - Oct. 7/8 a few cirrus - very bad seeing and some dec oscillations


Check every night or so for:

BIAS LEVELS with EEV1

Date Image(s)Bias: min-maxBias: meanNote
Aug 25 18:57 599911b-920b.fits 422.6-423.1 423.0 N=10
Aug 25 20:52 599928b-937.fits 423.1-423.6 423.5 N=10
Aug 26 06:05 599987b-996b.fits 423.3-423.7 423.6 N=10
Aug 27 06:46 600099b-118b.fits 423.6-424.0 423.9 N=20
Aug 27 18:46 600175b-194b.fits 422.2-423.1 422.9 N=20
Aug 28 06:55 600280b.fits --- 434.8 N=1
Aug 28 06:56 600281b-299b.fits 422.7-423.1 423.0 N=19
Aug 29 07:10 600411b-430b.fits 424.0-424.4 424.2 N=20
Aug 29 18:55 600548b-567b.fits 423.6-424.1 423.9 N=20
Aug 30 05:11 600589b-608b.fits 423.7-424.2 424.0 N=11
Sep 7 18:07 601788b-601807b.fits 420.6-421.1 420.9 N=20
Sep 9 18:13 602136b-602155b.fits 420.1-420.5 420.3 N=21
Sep 28 18:30 604565b-575b.fits 420.0-420.4 420.3 N=11
Sep 30 18:25 604812b-816b.fits 420.3-420.6 420.5 N=5
Oct 1 06:03 604872b-877b.fits 420.3-420.6 420.5 N=6
Oct 1 18:39 604880b-884b.fits 420.3-420.7 420.6 N=5
Oct 2 18:55 605238b-242b.fits 420.5-422.3 421.6 N=5
Oct 3 18:26 605564b-566b.fits 420.1-420.3 420.2 N=3
Oct 4 21:58 606027b-033b.fits 421.4-421.7 421.5 N=7
Oct 5 18:54 606085b-091b.fits 420.6-421.2 420.8 N=7
Oct 6 17:39 606134b-140b.fits 420.8-421.2 421.0 N=7
Oct 7 18:43 606199b-205.fits 421.7-422.6 422.3 N=7


THROUGHPUT MEASUREMENTS

RECIPE:
  1. Select object exposures (hselect *o.fits $I,OBJECT,INTTIME,AIRMASS,WAVELENG yes)
  2. Combine BIASES (imcombine input_list=@ListBias output_image=Bias.fits combine=average reject=minmax nlow=0 nhigh=1 blank=0 scale=none)
  3. Subtract BIASES (imarith Image - Bias NewImage)
  4. Change DISPAXIS to 2 if necessary (hedit)
  5. APALL object spectra
  6. noao.plot if necessary
  7. IMSTAT (-> mean in ADUs/col), select lines if necessary (imstat Image.ms[2000:3000])
  8. Multiply by GAIN=1.8021 (-> mean in e-/col)
  9. Divide by INTTIME (-> mean in e-/col/sec)
  10. Adjust to MAGNITUDE 0 (multiply by 10^(mag/2.5))


Date Image Spectro-
graph		 Wave-
length		 Order Filter/
Grism		 Star (mag) Airmass INTTIME Throughput
Aug 26 00:14 599946o.fits Red 3950 14 UV 51 Peg (5.5) 1.04 1200 10180 (outside 2 wide abs. lines - still are lot of small abs. lines)
Aug 26 01:06 599950o.fits Red 3950 14 UV HD 209458 (7.7) 1.00 2400 11400 (again, there is a lot of small abs. lines)
Aug 27 00:49 600051o.fits Red 3950 14 UV HD 209458 (7.7) 1.00 2400 11180
Aug 28 00:21 600234o.fits Red 3950 14 UV HD 209458 (7.7) 1.00 1200 8400 (problem with trace)
Sep 7 21:12 601829o.fits Red 6707 8 RED HD182572 (V=5.2) 1.0 300 105000 (R mag would be better...)
Sep 8 01:13 601844o.fits Red 6707 8 RED HD222368 (R=3.7) 1.0 300 55000
Sep 8 05:14 601883o.fits Red 6562 8 RED 56 Eri (R=5.7) 1.2 300 35000 (in continuum)
Sep 8 21:21 602004o.fits Red 6645 8 1617 HD 191980 (V=7.9) 1.0 900 45000
Sep 9 00:44 602032o.fits Red 4455 12 BLUE Gamma Peg (B=2.6) 1.0 300 23000
Sep 9 02:13 602049o.fits Red 7281 8 1711 Gamma Peg (mag ~ 3) 1.0 600 15000
Sep 9 02:50 602057o.fits Red 6645 8 1617 Gamma Peg (R=2.9) 1.1 300 33000
Sep 9 21:08 602194o.fits Red 7281 8 1711 Vega (mag=0) 1.1 60 21000
Sep 9 21:33 602198o.fits Red 7281 8 1711 HD185330 (V=6.5) 1.1 900 19000 (I would be better)
Sep 28 20:10 604582o.fits Red 6330 9 1604 13 Del (V=5.6) 1.05 300 29400 (some small abs. lines; R would be better)
Sep 28 21:17 604586o.fits Red 6330 9 1604 HD204543 (V=8.3) 1.09 1200 53500 (small abs. lines + hot pixels; R would be better)
Sep 29 05:41 604621o.fits Red 6330 9 1604 Xi Ori (R=4.5) 1.01 180 39000 (hard to trace, not much in the red)
Sep 30 01:28 604774o.fits Red 6330 9 1604 HD8724 (V=8.3) 1.00 900 39700 (small abs. lines + hot pixels)
Oct 1 19:27 604902o.fits Red 6150 9 RED Gamma Aql (R=1.65) 1.013 180 33800 (lot of small abs. lines)
Oct 1 19:54 604910o.fits Red 6150 9 RED 10 Aql (V=5.9) 1.058 120 50000 (R mag would be better)
Oct 2 05:49 605184o.fits Red 6150 9 RED (Chi Ori?) HD42560 (R=4.53) 1.005 240 47300
Oct 3 20:12 605611o.fits Red 6600 8 RED Gamma Equ (R=4.43) 1.022 90 42700 (outside abs. line; cirrus?)
Oct 3 21:43 605652o.fits Red 6675 8 RED Gamma Eql (R=4.43) 1.050 90 42400 (cirrus)
Oct 5 05:14 606054o.fits UV 3078 18 UV HD34078 (B=6.2) 1.034 2700 240 (cirrus)
Oct 5 20:17 606100o.fits UV 3078 18 UV HD 185859 (B=6.8) 1.007 2700 400 (few cirrus)
Oct 6 21:15 606151o.fits UV 3078 18 UV HD 185859 (B=6.8) 1.074 2700 260
Oct 7 20:05 606214o.fits UV 3078 18 UV HD 185859 (B=6.8) 1.005 2700 410 (few cirrus)


http://www.cfht.hawaii.edu/Instruments/Spectroscopy/Gecko/REPORTS/01B.html
Send comments to: Nadine Manset
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