postscript and CTIO 2008 July Ephemeris Xavier's Hydra Guide hydra-usermanual
Table 1. ChaMPlane CTIO/Hydra Observation Field List
MID Mosaic Field RA(J2000) Dec(J2000) l b NH(e22)
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31 ctio03 MSH11 11:11:58.64 -60:41:34.6 291.05423 -0.13553 0.639
15 ctio01 NGC3603 11:15:52.55 -61:17:46.5 291.71539 -0.52303 14.958
32 ctio03 G292 11:19:46.34 -61:40:05.4 292.28195 -0.70651 2.171
46 ctio04 G322 15:24:04.46 -57:07:34.3 322.52652 -0.17893 4.406
16 ctio01 U1538 15:42:02.77 -52:19:13.1 327.41757 2.24774 1.334
47 ctio04 J1550 15:51:09.73 -56:27:00.4 325.91867 -1.82233 0.926
48 ctio04 MZ3 16:17:17.54 -51:59:04.0 331.73633 -1.01744 1.149
4 ctio00 J1655 16:54:33.35 -39:51:19.4 345.04135 2.36745 0.640
49 ctio04 Mars 17:00:47.95 -26:59:02.7 356.03937 9.28077 0.132
5 ctio00 G347a 17:12:21.26 -39:34:24.4 347.35007 -0.17526 4.539
51 ctio04 Tornado 17:39:59.40 -30:58:38.0 357.62271 -0.03698 11.225
36 ctio03 GC2 17:43:49.61 -29:02:33.6 359.70422 0.27872 6.814
52 ctio04 SW 17:54:24.77 -29:49:36.9 0.21811 -2.10101 0.479
53 ctio04 U1755 17:58:50.42 -33:51:43.2 357.18570 -4.93052 0.396
55 ctio04 G11 18:11:18.69 -19:14:25.2 11.32268 -0.22289 8.945
64 ctio05 V4641 18:19:20.82 -25:27:35.3 6.72577 -4.81084 0.292
65 ctio05 H1905 19:08:35.87 +00:11:05.4 35.05568 -3.73268 0.359
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The faint setups are only listed here for reference. The very bright setups (R<13) are also only listed here for reference. Usually don't need to do them. If there is a high priority target in the very bright setup (e.g. Mars), do it with slit is much quicker. The overhead time with fiber is too high for very few targets in the setup. However, you can take them when the weather is bad and no good spectra can be taken for bright setups
All the first bright setups (bright 1) have highest priority targets (Chandra-Ha sources or bright Chandra counterparts), except for fields Mars, Tornado, V4641 and H1905. Only two bright 2 setups each contains one highest priority targets. They are the G347a and MSH11 bright 2 setups. Also, since SW will be observed at Gemini, give it a lower priority in this run.
So here are the observing priorities:
1. All the bright 1 setups, except for fields SW, Mars, Tornado, V4641 and H1905.
2. Bright 2 setups for fields G347a and MSH11.
3. Bright 1 setups for fields SW, Mars, Tornado, V4641 and H1905.
That's a total of 19 setups. But we only have time for 18 setups (3
per night) even the weather is perfect for all 6 nights. So you
figure :)
Table 2. ChaMPlane CTIO/Hydra Observation Hydra files
Bright (13 < R < 20) Faint (R => 20) Very bright (R<13)
Field Total 1 2 3 4 5 Total 1 2 3 4 5 1
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MSH11 589 105/rd103/rd101/r 89/r 88/r 1847 118/r 118/r 109/r 116/r 110/r 10/r
NGC3603 675 93/r 80/r 85/r 84/r 82/r 4109 112/r 121/r 115/r 116/r 106/r 4/r
G292 85 47/r 24/r 6/r 7/r 1/r 1103 104/r 98/r 101/r 104/r 88/r 1/r
G322 60 33/rd 16/r 8/r 3/r 18/r 224 91/r 72/r 51/r 7/r 2/r
U1538 191 77/rd 62/r 35/r 11/r 3/r 42 34/r 6/r 2/r 0/r 0/r 5/r
J1550 579 89/rd 90/r 89/r 85/r 81/r 1070 103/r 99/r 78/r 74/r 82/r 5/r
MZ3 366 83/rd 77/r 70/r 63/r 39/r 952 106/r 92/r 92/r 84/r 78/r 6/r
J1655 65 45/rd 16/r 2/r 1/r 1/r 1404 107/r 114/r 105/r 99/r 100/r
Mars 87 53/r 27/r 7/r 0/r 0/r 342 89/r 81/r 75/r 47/r 26/r 4/r
G347a 196 78/rd 67/rd 33/r 13/r 3/r 313 78/r 74/r 64/r 43/r 25/r 2/r
Tornado 62 52/r 8/r 1/r 1/r 0/r 10 9/r 1/r 0/r 0/r 0/r
GC2 123 54/rd 35/r 18/r 8/r 5/r 566 90/r 81/r 62/r 54/r 50/r 1/r
SW 968 106/r 101/r 91/r 99/r 87/r 43 39/r 4/r 0/r 0/r 0/r 1/r
U1755 246 64/rd 57/r 53/r 41/r 22/r 71 42/r 23/r 5/r 0/r 0/r 7/r
G11 312 87/rd 77/r 60/r 41/r 31/r 708 100/r 106/r 111/r 108/r 89/r 6/r
V4641 97 47/r 30/r 16/r 4/r 0/r 44 35/r 8/r 1/r 0/r 0/r 2/r
H1905 105 58/r 33/r 9/r 2/r 1/r 72 38/r 23/r 6/r 2/r 1/r
47Tuc 72d
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Total: Total number of bright or faint objects (without spectra yet) in the field.
1-5: Number of bright or faint objects in the 1-5 hydra setups
Click a number to get that hydra setup file.
Click the "r" next to a number to get the region file of that setup.
Click a field name to get the detailed information of the hydra setups.
where:
hydra_file: hydra setup.
Center_RA,Dec: Center RA and Dec of the hydra setup.
Sky: number of sky positions.
GS GSb GSf: number of FOPS stars, with their bright and faint R mag.
Obj Rb Rf: number of objects, with their bright and faint R mag.
X XRb XRf: number of chandra counterparts, with their bright and faint R mag.
Xha Xhab Xhaf: number of chandra-Ha sources, with their bright and faint R mag.
Xhm Xhmb Xhmf: number of chandra-Hm sources, with their bright and faint R mag.
H HRb HRf: number of Ha emission sources, with their bright and faint R mag.
d: done (observed) - 13 setups, 957 objects
Observing log
Table 3. Exposure sequence for bright hydra setup
Do Exp Readout Total Timeline
(sec) (min) (min) (min)
-----------------------------------------------------
Setup hydra fiber ~20 20.0
Acquire field ~5 25.0
projector flat 5 2.5 2.5 27.5
Arc lamp spectrum 3 2.5 2.5 30.0
Object spectra 2400 2.5 42.5 72.5
Object spectra 2400 2.5 42.5 115.0
Arc lamp spectrum 5 2.5 2.5 117.5
Object spectra 2400 2.5 42.5 160.0
Object spectra 2400 2.5 42.5 202.5
Arc lamp spectrum 10 2.5 2.5 205.0
-----------------------------------------------------
When the weather is bad and no good spectra can be taken for bright
setups, take the very bright setups with a single 15min exposure. The
total time needed for each very bright setup is 45min (assuming field
acquisition has been done for the bright setups).
Table 4. Exposure sequence for very bright hydra setup
Do Exp Readout Total Timeline
(sec) (min) (min) (min)
-----------------------------------------------------
Setup hydra fiber ~20 20.0
projector flat 5 2.5 2.5 22.5
Arc lamp spectrum 3 2.5 2.5 25.0
Object spectra 900 2.5 17.5 42.5
Arc lamp spectrum 10 2.5 2.5 45.0
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postscript and
CTIO
2008 July Ephemeris
Xavier's Hydra Guide
hydra-usermanual
Astronomical twilight: 19:21 - 6:14 Duration: 10h53m But all the targets are set at 5:00am, so the actual usable time is only 9h39m Do three bright setups each night: 3 x 205min = 615m = 10h15m - 30m* = 9h45m *For the first field: Setup hydra fiber, Acquire field, projector flat, Arc lamp spectrum can be done in the evening before the twilight ends, so the first exposure can be started immediately at the beginning of the night.So there is just enough time for three setups each with complete exposures sequence if you start 3min before and end 3min after that 9h39m duration (this is easily doable). If short of time due to weather or technical problems, try to reduce the number of exposures and/or exposure time.
Ping Zhao: zhao@cfa.harvard.edu