TASS sees 500K unique objects, some > 100 times

[Chris Albertson <chrisja@jps.net>]

No claims of discovering new exotic objects or UFO sightings this
time.  I may however have a new TASS record.  If so, I hope it 
gets beaten soon.  We need to start looking at some of this data.

Oh yes the "record":
The number of "merged" observations of a given star: 102
Anyone done better yet?


In fact 18 stars where observed at least 100 times.  and
hundreds were seen more than 90 times.  more than 500,000
objects were seen multiple times by TASS.

This was the result of combining  4128 frames of data taken by
sites B, G and H last year and ftp'd to Micheal's computer.  This
data was all taken last year.  I assume there is more but I have
exhausted my supply of test data.

We need to work on photometric calibration before a meaningful 
light curve can be plotted. 


Here are a few matching statistics.  

obs_count = number of times seen by TASS
count     = number of stars with a given obs_count value.


  count|obs_count
-------+---------
2040134|        0  <-- In TASSM16 but not seen by TASS
 970969|        1
 163738|        2
  67693|        3
  42355|        4
  31313|        5
  27746|        6
  19120|        7
  16553|        8
  17851|        9
   8309|       10
<snip>
    199|       90
    256|       91
    284|       92
    247|       93
    312|       94
    235|       95
    105|       96
     64|       97
     33|       98
     31|       99
     11|      100
      5|      101
      2|      102

So 970,969 stars where seen only once.  Of these 125,124 were matches to
the
TASSM16 list and 845,845 were non-matches.

The number of unique objects seen by TASS not in TASSM16 is 998,901.
(Includes the above 845,845)

The number of unique objects seen by TASS more then once is 510625. 
Only
a little more than 1/3 of the equatorial band was covered.  So I think
this shows that TASS Mk III will eventually monitor about 1.5M stars

More impressive is the total number of observations: 7,199,625.

-- 
   --Chris Albertson             home: chrisja@jps.net        
     Redondo Beach, California   work: chris@topdog.logicon.com