Hydra Data Streams: ------------------- system stream description ------ ------ ----------- wiyn hydra.assign Fiber assignments wiyn hydra.field Information on the current field wiyn hydra.guider FOPS coordinates wiyn hydra.gripper Gripper status Hydra Data Stream Attributes: ----------------------------- -->hydra.assign attribute type number keyword units description --------- ---- ------ -------- ----- ----------- SLFIB%d string 5 * [%d = 0 to 150] SLFIB0 ... SLFIB150 * keyword is hydra.assign.SLFIB?? (illegal FITS keyword)The hydra.assign values are the same as appear in the .iraf file. This file is a log of the assignments and describe the function of each fiber along with target information. The first element is a code:
Code Function ---- -------- -2 Fuducial position -1 Not assigned 0 Sky 1 Target 2 Comparison Source (fibers 1 and 100)The remaining elements are comments provided by the observer. One of the conventions for targets is : (2) Object name, (3,4) magnitudes, (5) observer index number. The other codes use the comment field to further describe the fiber.
The WIYN directory for ".iraf" files is oatmeal:/home/hydra/fields/.
An example (the first column is the index from the .iraf file):
1 2 SCS 2 1 T115 14.296 13.667 (280) 3 0 sky 133.22 1854.78 (207) 4 0 Random Sky (9984) 5 1 T153 13.425 13.172 (318) 6 0 Random Sky (9959) 7 0 Random Sky (9971) 8 1 B32 13.277 13.036 (18) 9 1 T118 14.330 13.974 (283) 10 1 T132 14.280 14.180 (297) 11 0 Random Sky (9986) 12 1 B14 12.967 12.669 (7) 13 0 Random Sky (9967) 14 1 B44 13.501 13.201 (24) 15 1 T148 15.252 15.233 (313) 16 0 Random Sky (9965) 17 0 Random Sky (9969) 18 1 T110 14.842 13.946 (275) 19 0 Random Sky (9996) 20 1 B1 11.983 11.408 (1) 21 1 T160 14.608 13.762 (325) 22 1 T126 14.844 14.607 (291) 23 0 sky 613.37 559.27 (237) 24 1 T101 14.137 13.370 (266) 25 1 B2 12.144 11.808 (2) 26 0 Random Sky (9976) 27 0 Random Sky (9988) 28 0 Random Sky (9960) 29 0 Random Sky (9963) 30 0 Random Sky (9975) 31 0 Random Sky (9972) 32 1 T158 13.205 13.153 (323) 33 0 sky1108.78 1962.35 (217) 34 1 B24 13.272 12.875 (12) 35 1 B25 13.117 12.904 (13) 36 1 B73 13.817 13.553 (35) 37 1 B23 13.158 12.855 (11) 38 1 T146 14.848 14.732 (311) 39 1 B11 13.193 12.843 (5) 40 1 T98 13.697 13.725 (263) 41 0 Random Sky (9993) 42 1 T86 13.534 13.354 (251) 43 0 Random Sky (9977) 44 0 Random Sky (9958) 45 0 Random Sky (9979) 46 0 Random Sky (9982) 47 0 Random Sky (9998) 48 1 B29 13.272 12.984 (16) 49 1 T162 13.952 14.131 (327) 50 1 T121 13? 13 (286) 51 1 B34 13.301 13.008 (71) 52 0 Random Sky (9970) 53 0 Random Sky (9999) 54 1 T111 14.722 14.787 (276) 55 0 Random Sky (9968) 56 1 T123 14.991 15.017 (288) 57 0 Random Sky (9962) 58 -2 Gap 59 0 Random Sky (9961) 60 0 Random Sky (9974) 61 1 B221 15.258 14.839 (183) 62 1 T149 15.181 14.655 (314) 63 0 Random Sky (9983) 64 0 Random Sky (9989) 65 1 B16 13.139 12.717 (8) 66 1 B35 13.287 13.019 (19) 67 0 Random Sky (9994) 68 -1 not assigned 69 1 T108 12.812 12.171 (273) 70 1 B53 13.952 13.491 (78) 71 1 B61 14.202 13.637 (32) 72 0 Random Sky (9997) 73 1 B3 12.264 11.987 (3) 74 0 Random Sky (9964) 75 -2 Gap 76 1 T135 14.265 14.159 (300) 77 1 B6 12.712 12.506 (65) 78 1 B67 13.985 13.495 (34) 79 0 Random Sky (9981) 80 1 T79 13.527 13.379 (244) 81 1 B21 13.198 12.926 (10) 82 1 B18 13.022 12.727 (9) 83 0 Random Sky (9995) 84 0 Random Sky (9990) 85 0 Random Sky (9978) 86 1 T159 12.547 12.492 (324) 87 0 Random Sky (9966) 88 1 B40 13.420 13.138 (21) 89 0 Random Sky (9980) 90 0 Random Sky (9987) 91 1 T128 14.950 14.710 (293) 92 0 sky1787.26 1419.25 (230) 93 0 Random Sky (9991) 94 0 Random Sky (9992) 95 1 T99 14.565 14.159 (264) 96 0 Random Sky (9973) 97 0 Random Sky (9985) 98 -1 Broken Fiber 99 -1 not assigned 100 2 SCS
-->hydra.field attribute type number keyword units description --------- ---- ------ -------- ----- ----------- fldname string 1 FLDNAME NONE name of current field fldtime string 1 FLDTIME intended exposure time fldlst string 1 FLDLST field sidereal time fldcoord string 3 FLDCOORD RA/DEC/epoch field center cable string 1 FLDCABLE NONE name of current cable cablesize integer 1 CABLESIZE -->hydra.guider attribute type number keyword units description --------- ---- ------ -------- ----- ----------- fop%c float 7 FOP%c (multi) coord. & geom. [%c = A to L, 12 FOPS] fopA FOPA ... ... fopL FOPL array values: 1 fop x 2 fop y 3 distance from origin to button 4 angle between fiber 0 pivot and this fiber's pivot 5 angle between fiber 0 pivot and this fiber's button 6 angle between this fiber's radial line and the tube at the button 7 status of the fop (assigned sky, assigned object, random sky) -->hydra.gripper attribute type number keyword units description --------- ---- ------ -------- ----- ----------- position Int 3 encoder gipper X,Y,Z status Int enumerated gripper state
Hydra GWC Interface - bob@noao.edu