processing TR01 to TR34

[Fraser Farrell <fraser@trilobytes.com.au>]

To all,

During my spare moments I've been doing some processing of the ~1000 
*.cal files from batches TR01 to TR34; which I downloaded last month. 
These cover the whole northern sky as well as the traditional TASS 
equatorial band. Here's a few statistics so far:

 - Decompressed total size of *.cal files :  15 355 904 130 bytes (ie: 
about 15 gigabytes). May vary slightly on your computer according to 
your inode density (Linux) or cluster size (Windows). Decompressed 
total size of TR01-TR34 is about 17.4 gigabytes (including *.cal 
files + their parameter files).

 - Total number of detections listed in the *.cal files :  158 308 290

 - Total number of objects identified by collect_stars.pl :
         44 502 318   (20 arcsec match)
         44 515 047   (15 arcsec match)
Some of these objects are magnitude "99". I haven't checked yet for 
coincidences along the "join" -- 359.999 deg to 0.001 deg in RA. And 
I haven't checked for asteroids.


The rest of these stats refer to the 15 arcsecond collection, and 
ignore objects with problem flags and/or magnitude "99"s.

 - Number of stars observed once  18 574 663
 - Number of stars observed twice   8 885 845
 - Number of stars observed 3 to 5 times  8 089 543
 - Number of stars observed 6 to 10 times  6 179 705
 - Number of stars observed 11 to 20 times  1 762 318
 - Number of stars observed 21 to 30 times  456 831
 - Number of stars observed more than 30 times  333 074
 - Total number observed at least once  44 281 979
 - Most observations of any star  251
 - Average number of observations per star    3.504

Number of stars with various maximum/minimum magnitudes:

mag           max V         min V            max I         min I
 0-6               292            276             2369         2120
 6-7             6031          5125           36 582        26 731
 7-8           53 687        43 468         253 132      212 101
 8-9         227 661      186 990         818 880      708 018
 9-10      754 270       629 294       2 538 485     2 258 806
10-11    2 524 207     2 092 306      7 116 217     6 467 521
11-12    7 767 295     6 479 533    14 384 290   13 796 796
12-13   15 970 419   14 778 605   14 314 682   15 201 312
13-14   13 755 109   15 852 270     4 450 216     5 191 733
14-15    2 944 178      3 862 296       335 388       380 458
15-33     278 830         351 816        31 738          36 383


Because I'm still not sure I'm calculating the Welch-Stetson index 
correctly I won't present those statistics yet. But here's the number 
of stars found in various amplitude ranges:

range      V                    I
 <0.1      23 171 506      27 383 180
0.1-0.2   6 374 517      9 190 359
0.2-0.5   11 968 086      7 112 395
0.5-1.0   2 547 393      546 339
1.0-2.0   202 470      45 356
 >2.0     18 007      4350

The next step is to match TASS stars to known objects.


cheers,

Fraser Farrell