SIMPLE = T / Standard FITS format BITPIX = 8 / Character Information NAXIS = 0 / No image data array present EXTEND = T / Extension exists FILETYPE= 'SM_REG_X' / Indicates file type ORIGIN = 'ST ScI ' / Space Telescope Science Institute DATE = '01/06/89' / Date of issue (dd/mm/yy) COMMENT THE GUIDE STAR CATALOG COMMENT COMMENT An all-sky astrometric and photometric catalog COMMENT prepared for the operation of the Hubble Space COMMENT Telescope. COMMENT COMMENT Copyright, 1989, Association of Universities COMMENT for Research in Astronomy, Inc. COMMENT COMMENT This file contains data for one of the supporting tables for the Guide COMMENT Star Catalog (GSC). Additional information on the GSC may be found in COMMENT accompanying scientific publications as well as in comments and tables COMMENT elsewhere on this set of volumes. COMMENT COMMENT The Guide Star Catalog (GSC) was prepared by the Space Telescope Science COMMENT Institute (ST ScI), 3700 San Martin Drive, Baltimore, MD 21218, USA. COMMENT ST ScI is operated by the Association of Universities for Research in COMMENT Astronomy, Inc. (AURA), under contract with the National Aeronautics and COMMENT Space Administration (NASA). COMMENT COMMENT COMMENT File SM_REG_X COMMENT Index to the Small Regions COMMENT COMMENT The adopted catalog organization divides the sky into large regions, COMMENT approximately 7.5 deg in size, which are then subdivided into small COMMENT regions on the basis of their expected individual stellar populations; COMMENT each small region corresponds to one file of the GSC. Some details are COMMENT given in the comments to file REGIONS; and a full description, including COMMENT the region counting rules, may be found in Paper III. COMMENT COMMENT All information needed to associate a point on the sky with a region COMMENT file is given in file REGIONS. However, files LR_REG_X, which is an COMMENT index to the large regions, and SM_REG_X, which is an index to the small COMMENT regions, are provided to support a more rapid search algorithm based on COMMENT the geometric arrangement of the regions and their numbering conven- COMMENT tions. COMMENT COMMENT File LG_REG_X gives, for each declination band DEC_CTR, the number of COMMENT the first large region F_LG_REG in the band and the number of large COMMENT regions N_LG_REG therein. Similarly, file SM_REG_X gives, for each large COMMENT region LG_REG_N, the number F_SM_REG of the first small region and the COMMENT level of subdivision of the large region DEPTH. Then, for any COMMENT coordinate, two simple indexing procedures are sufficient to identify COMMENT the large region number and then, obtaining the level to which that COMMENT region is subdivided from the small region table, the small region COMMENT number which bears a one-to-one correspondence with the name of a GSC COMMENT file. One need also to note that the first large region in the southern COMMENT hemisphere is 367. END XTENSION= 'TABLE ' / Table Extension BITPIX = 8 / Character Information NAXIS = 2 / Two-dimensional table NAXIS1 = 12 / Number of characters per line NAXIS2 = 732 / Number of rows PCOUNT = 0 / No Random Parameters GCOUNT = 1 / Only one group TFIELDS = 3 / Three fields per row EXTNAME = 'SM_REG_X' / Small Region Index File EXTVER = 1 / Integer Version Number TTYPE1 = 'LG_REG_N' / Number (ID) of the Large Region TBCOL1 = 1 / Start in column 1 TFORM1 = 'I3 ' / Integer, 3 Character Field TTYPE2 = 'F_SM_REG' / Number (ID) of first Small Region in Lg. Reg. TBCOL2 = 5 / Start in column 5 TFORM2 = 'I5 ' / Integer, 5 Character Field TTYPE3 = 'DEPTH ' / Depth of Subdivision of Large Region TBCOL3 = 12 / Start in column 12 TFORM3 = 'I1 ' / Integer, 1 Character Field END 1 1 3 2 10 3 3 19 3 4 28 3 5 37 3 6 46 3 7 5 5 3 8 64 3 9 73 3 10 82 4 11 98 4 12 114 4 13 130 4 14 146 4 15 162 4 16 178 4 17 194 4 18 210 4 19 226 3 20 235 3 21 244 3 22 253 3 23 262 3 24 271 3 25 280 3 26 289 3 27 29 8 3 28 307 3 29 316 3 30 325 3 31 334 4 32 350 4 33 366 4 34 382 4 35 398 4 36 414 4 37 430 4 38 446 4 39 462 4 40 478 4 41 494 4 42 510 4 43 526 4 44 542 4 45 558 3 46 567 3 47 57 6 3 48 585 3 49 594 3 50 603 3 51 612 3 52 621 3 53 630 3 54 639 3 55 648 3 56 657 3 57 666 4 58 682 4 59 698 4 60 714 4 61 730 4 62 746 4 63 762 4 64 778 4 65 794 4 66 810 3 67 81 9 3 68 828 3 69 837 3 70 846 3 71 855 3 72 864 3 73 873 3 74 882 3 75 891 3 76 900 3 77 909 3 78 918 3 79 927 4 80 943 4 81 959 4 82 975 4 83 991 4 84 1007 4 85 1023 4 86 1039 4 87 105 5 4 88 1071 4 89 1087 4 90 1103 4 91 1119 4 92 1135 4 93 1151 3 94 1160 3 95 1169 3 96 1178 3 97 1187 3 98 1196 3 99 1205 3100 1214 3 101 1223 3102 1232 4103 1248 4104 1264 4105 1280 4106 1296 4107 131 2 4108 1328 4109 1344 4110 1360 4111 1376 4112 1392 3113 1401 3114 1410 3115 1419 3116 1428 3117 1437 2118 1441 2119 1445 2120 1449 3 121 1458 3122 1467 3123 1476 3124 1485 3125 1494 3126 1503 4127 151 9 4128 1535 4129 1551 4130 1567 4131 1583 4132 1599 4133 1615 4134 1631 4135 1647 4136 1663 4137 1679 4138 1695 4139 1711 3140 1720 3 141 1729 3142 1738 3143 1747 3144 1756 3145 1765 4146 1781 4147 179 7 4148 1813 4149 1829 4150 1845 4151 1861 4152 1877 4153 1893 4154 1909 4155 1925 4156 1941 3157 1950 3158 1959 3159 1968 3160 1977 2 161 1981 2162 1985 2163 1989 2164 1993 2165 1997 3166 2006 3167 201 5 3168 2024 3169 2033 3170 2042 4171 2058 4172 2074 4173 2090 4174 2106 4175 2122 4176 2138 4177 2154 4178 2170 4179 2186 4180 2202 4 181 2218 4182 2234 4183 2250 3184 2259 4185 2275 4186 2291 4187 230 7 4188 2323 4189 2339 4190 2355 4191 2371 4192 2387 4193 2403 4194 2419 4195 2435 4196 2451 4197 2467 4198 2483 3199 2492 3200 2501 3 201 2510 3202 2519 2203 2523 2204 2527 2205 2531 2206 2535 3207 254 4 3208 2553 3209 2562 3210 2571 3211 2580 3212 2589 4213 2605 4214 2621 4215 2637 4216 2653 4217 2669 4218 2685 4219 2701 4220 2717 4 221 2733 4222 2749 4223 2765 4224 2781 4225 2797 4226 2813 4227 282 9 4228 2845 4229 2861 4230 2877 4231 2893 4232 2909 4233 2925 4234 2941 4235 2957 4236 2973 3237 2982 3238 2991 3239 3000 3240 3009 2 241 3013 2242 3017 2243 3021 2244 3025 3245 3034 3246 3043 3247 305 2 3248 3061 3249 3070 4250 3086 4251 3102 4252 3118 4253 3134 4254 3150 4255 3166 4256 3182 4257 3198 4258 3214 4259 3230 4260 3246 4 261 3262 4262 3278 4263 3294 4264 3310 4265 3326 4266 3342 4267 335 8 4268 3374 4269 3390 4270 3406 3271 3415 3272 3424 3273 3433 3274 3442 3275 3451 2276 3455 2277 3459 2278 3463 3279 3472 3280 3481 3 281 3490 3282 3499 3283 3508 4284 3524 4285 3540 4286 3556 4287 357 2 4288 3588 4289 3604 4290 3620 4291 3636 4292 3652 4293 3668 4294 3684 4295 3700 4296 3716 4297 3732 4298 3748 4299 3764 4300 3780 4 301 3796 3302 3805 3303 3814 3304 3823 3305 3832 3306 3841 3307 385 0 3308 3859 3309 3868 3310 3877 3311 3886 4312 3902 4313 3918 4314 3934 4315 3950 4316 3966 4317 3982 4318 3998 4319 4014 4320 4030 4 321 4046 4322 4062 4323 4078 4324 4094 4325 4110 4326 4126 3327 413 5 3328 4144 3329 4153 3330 4162 3331 4171 3332 4180 3333 4189 3334 4198 4335 4214 4336 4230 4337 4246 4338 4262 4339 4278 4340 4294 4 341 4310 4342 4326 4343 4342 4344 4358 4345 4374 3346 4383 3347 439 2 3348 4401 3349 4410 3350 4419 3351 4428 4352 4444 4353 4460 4354 4476 4355 4492 4356 4508 4357 4524 4358 4540 3359 4549 3360 4558 3 361 4567 4362 4583 4363 4599 4364 4615 4365 4631 4366 4647 4367 466 3 3368 4672 3369 4681 2370 4685 2371 4689 3372 4698 3373 4707 3374 4716 3375 4725 3376 4734 4377 4750 4378 4766 4379 4782 4380 4798 4 381 4814 4382 4830 4383 4846 4384 4862 4385 4878 4386 4894 3387 490 3 3388 4912 3389 4921 3390 4930 3391 4939 3392 4948 3393 4957 3394 4966 3395 4975 3396 4984 4397 5000 4398 5016 4399 5032 4400 5048 4 401 5064 4402 5080 4403 5096 4404 5112 4405 5128 4406 5144 4407 516 0 4408 5176 4409 5192 4410 5208 4411 5224 3412 5233 3413 5242 3414 5251 3415 5260 3416 5269 2417 5273 2418 5277 2419 5281 2420 5285 3 421 5294 3422 5303 3423 5312 3424 5321 3425 5330 4426 5346 4427 536 2 4428 5378 4429 5394 4430 5410 4431 5426 4432 5442 4433 5458 4434 5474 4435 5490 3436 5499 3437 5508 3438 5517 3439 5526 3440 5535 3 441 5544 3442 5553 3443 5562 4444 5578 4445 5594 4446 5610 4447 562 6 4448 5642 4449 5658 4450 5674 4451 5690 4452 5706 4453 5722 4454 5738 4455 5754 4456 5770 4457 5786 4458 5802 3459 5811 3460 5820 3 461 5829 3462 5838 3463 5847 2464 5851 2465 5855 2466 5859 2467 586 3 3468 5872 3469 5881 3470 5890 3471 5899 4472 5915 4473 5931 4474 5947 4475 5963 4476 5979 4477 5995 4478 6011 4479 6027 4480 6043 4 481 6059 4482 6075 3483 6084 3484 6093 3485 6102 3486 6111 3487 612 0 4488 6136 4489 6152 4490 6168 4491 6184 4492 6200 4493 6216 4494 6232 4495 6248 4496 6264 4497 6280 4498 6296 4499 6312 4500 6328 4 501 6344 4502 6360 4503 6376 3504 6385 3505 6394 3506 6403 3507 641 2 3508 6421 2509 6425 2510 6429 2511 6433 2512 6437 3513 6446 3514 6455 3515 6464 3516 6473 4517 6489 4518 6505 4519 6521 4520 6537 4 521 6553 4522 6569 4523 6585 4524 6601 4525 6617 4526 6633 4527 664 9 4528 6665 4529 6681 4530 6697 4531 6713 4532 6729 4533 6745 4534 6761 4535 6777 4536 6793 4537 6809 4538 6825 4539 6841 4540 6857 4 541 6873 4542 6889 4543 6905 4544 6921 4545 6937 4546 6953 3547 696 2 3548 6971 3549 6980 3550 6989 3551 6998 2552 7002 2553 7006 2554 7010 3555 7019 3556 7028 3557 7037 3558 7046 3559 7055 4560 7071 4 561 7087 4562 7103 4563 7119 4564 7135 4565 7151 4566 7167 4567 718 3 4568 7199 4569 7215 4570 7231 4571 7247 4572 7263 4573 7279 4574 7295 4575 7311 4576 7327 4577 7343 4578 7359 4579 7375 4580 7391 4 581 7407 4582 7423 4583 7439 4584 7455 4585 7471 4586 7487 3587 749 6 3588 7505 3589 7514 3590 7523 3591 7532 3592 7541 3593 7550 3594 7559 3595 7568 3596 7577 3597 7586 3598 7595 4599 7611 4600 7627 4 601 7643 4602 7659 4603 7675 4604 7691 4605 7707 4606 7723 4607 773 9 4608 7755 4609 7771 4610 7787 4611 7803 4612 7819 4613 7835 4614 7851 4615 7867 4616 7883 4617 7899 4618 7915 4619 7931 4620 7947 4 621 7963 4622 7979 4623 7995 3624 8004 3625 8013 3626 8022 3627 803 1 3628 8040 3629 8049 3630 8058 3631 8067 3632 8076 3633 8085 4634 8101 4635 8117 4636 8133 4637 8149 4638 8165 4639 8181 4640 8197 4 641 8213 4642 8229 4643 8245 4644 8261 4645 8277 4646 8293 4647 830 9 4648 8325 4649 8341 4650 8357 4651 8373 4652 8389 4653 8405 4654 8421 4655 8437 3656 8446 3657 8455 3658 8464 3659 8473 3660 8482 3 661 8491 3662 8500 3663 8509 3664 8518 4665 8534 4666 8550 4667 856 6 4668 8582 4669 8598 4670 8614 4671 8630 4672 8646 4673 8662 4674 8678 4675 8694 4676 8710 4677 8726 4678 8742 4679 8758 4680 8774 4 681 8790 4682 8806 4683 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