ChaMPlane Observation: CTIO/Hydra May 20-24, 2006

ChaMPlane Observation with CTIO 4m Hydra

May 20-24, 2006

I. Target Fields

Table 1 lists the 24 target fields for this run.

            Table 1. ChaMPlane CTIO/Hydra Observation Field List
MID Mosaic  Field      RA(J2000)    Dec(J2000)      l         b       NH(e22)
-----------------------------------------------------------------------------
 3  ctio00  NGC3256   10:28:41.70  -43:59:18.3  277.54922   11.73626   0.068
14  ctio01  V382Vel   10:44:48.00  -52:18:18.0  284.10977    5.87716   0.258
31  ctio03  MSH11     11:11:57.38  -60:41:28.0  291.05115   -0.13479   0.637
15  ctio01  NGC3603   11:15:49.80  -61:17:23.0  291.70792   -0.51893  16.683
32  ctio03  G292      11:19:45.94  -61:40:13.5  292.28198   -0.70890   2.162
33  ctio03  Cenx3     11:20:49.67  -60:37:04.3  292.03949    0.32333   0.665
34  ctio03  J1614     16:14:53.00  -63:12:57.0  323.64777   -8.85384   0.075
 4  ctio00  J1655     16:54:28.90  -39:51:31.7  345.02972    2.37637   0.638
17  ctio01  PSR1706   17:09:42.00  -44:30:45.0  343.07489   -2.69993   1.319
 5  ctio00  G347a     17:12:16.10  -39:34:39.6  347.33688   -0.16436   4.895
 6  ctio00  G347b     17:15:36.00  -39:58:36.0  347.38821   -0.91690   1.794
35  ctio03  GC5       17:43:04.80  -29:37:48.0  359.11887    0.10892  15.853
36  ctio03  GC2       17:43:33.12  -29:01:48.0  359.68350    0.33651   4.930
37  ctio03  GC3       17:45:44.88  -28:25:48.0    0.44666    0.23978  17.838
38  ctio03  GC6       17:45:49.20  -29:37:48.0  359.43039   -0.39852  10.212
39  ctio03  GC1       17:46:16.32  -29:01:48.0  359.99405   -0.17051  36.045
40  ctio03  GC4       17:48:27.60  -28:25:48.0    0.75573   -0.27009  30.783
63  ctio05  LW        17:51:48.00  -29:34:12.0    0.15160   -1.48171   0.704
52  ctio04  SW        17:54:24.42  -29:49:16.3    0.22242   -2.09703   0.478
18  ctio01  PSR1757   18:01:48.00  -24:49:39.0    5.37027   -1.02458   4.030
54  ctio04  BW        18:03:36.00  -29:57:50.7    1.08909   -3.89739   0.321
20  ctio01  MWC297    18:27:59.80  -03:51:02.6   26.82325    3.44240   6.963
41  ctio03  GP        18:43:27.72  -03:58:12.0   28.49013   -0.03869  17.281
21  ctio01  SGR1900   19:07:38.30  +09:18:08.1   43.04858    0.66903   2.784
-----------------------------------------------------------------------------

Table 2 lists the Hydra setup files. For each field, there are bright setups (R < 19) and faint setups (R => 19). Our data show that hydra is only effective for objects with R < 19. So we only observe bright setups in this run. For most of the fields, only observe the first bright setup. The faint setups are only listed here for reference. Only observe those with more than 20 objects in the hydra file. Priorities are given in the order of number of objects in the setup.

    Table 2. ChaMPlane CTIO/Hydra Observation Hydra files 
        Bright (object Mag < 19)    Faint (object Mag => 18) 			 
Field   Total   1   2   3   4  5  Total    1    2    3    4    5
-------------------------------------------------------------------
NGC3256    15  12   2   1   0  0     56   43   11    2    0    0
V382Vel     7   7   0   0   0  0     40   32    7    1    0    0
MSH11     236  86d 84  47  16  2   1931  115  114  116  111  103
NGC3603   195  65d 61  32  18  9   3453  108  118  109  110  112
G292       48  35d 12   1   0  0    901   99  105   99   93   84
Cenx3     112  58d 40  12   2  0    309   90   85   58   35   19
J1614      18  17   1   0   0  0     81   50   23    8    0    0
J1655      34  31   3   0   0  0   1039  106   96   98  102   98
PSR1706    26  20   5   1   0  0    211   80   72   39   16    3
G347a     121  64d 36  11   5  2    178   69   53   28   12    6
G347b      32  28   3   1   0  0    108   61   30   16    1    0
GC5        23  20   3   0   0  0    167   86   56   22    3    0
GC2        37  29   7   1   0  0    382   81   67   63   49   39
GC3        68  53d 13   2   0  0    261   89   75   43   26   16
GC6        32  24   6   1   1  0    537   92   78   68   73   49
GC1       211  81d 78d 35  13  3   1197  106  106  105  102  103
GC4        67  45  19   3   0  0    402   84   74   74   58   40
LW         65  40d 25                   
SW         61  50d 11                   
PSR1757    36  30   4   1   1  0    113   74   26    8    2    2
BW         35  30   5                   
MWC297     42  37   4   1   0  0     46   35    8    2    1    0
GP         61  47  12   2   0  0    283   81   76   77   34   11
SGR1900    40  36   4   0   0  0    148   85   50   12    1    0
-------------------------------------------------------------------
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 a field name to get the detailed information of the hydra setup.
Here is the detailed hydra setup information for all the fields.

Table 2s lists the Hydra setup files for bright stars (R<16) in the HII region. Take one 10min exposure.

Table 2b. HII Region Bright Star Hydra files 
        Bright (object Mag < 16)
Field   Total   1   2   3   4   5
-----------------------------------
GC1       494  25  23  25  23  22
GC2       237  43  54  53  45  25
GC4       678  77d 71  69  70  70
-----------------------------------
d: done (observed) - 11 setups, 687 objects

III. Exposure Sequence

Take 3x30min exposures for each bright setup. Table 3 lists the exposure sequence for each setup, including setup fibers, acquire field and take comparison lamp. The total time needed for each bright setup is 2hr8.5m.

 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      1800      2.5      32.5   62.5
Object spectra      1800      2.5      32.5   95.0
Object spectra      1800      2.5      32.5  127.5
Arc lamp spectrum     10      2.5       2.5  130.0
-----------------------------------------------------

IV. Observation Plan

Here is an observing elevation chart showing the locus of the 24 target fields. Space between the two vertical dashed lines is the astronomical twilight zone.

postscript and txt observation star track chart observing almanac CTIO 2006 May Ephemeris Xavier's Hydra Guide hydra-usermanual

Astronomical twilight:  19:18 - 6:02   duration 10h45m 
Do five bright setups:  5 x 130min = 650m = 10h50m

V. Flux Standard

Take flux standards every night. To take the standard, move one fiber to the exact center, then point the telescope at the flux standard and take a spectrum. Remember to take a comparison spectrum after each standard taken.