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NOAO Newsletter - Cerro Tololo Inter-American Observatory - December 1996 - Number 48


Observing Request Statistics: February - July 1997

4-m Telescope: 145 nights

    Requests        Nights Requested

 Dark    Bright      Dark    Bright         Instrument    Nights    %

  8        5          29       16             Argus         45     10.4
  0        4           0       16               COB         16      3.7
  3        1           9        1            CF/CCD         10      2.3
 29        7          89       24            CS/CCD        113     26.1
  1       15           4       57           Ech/CCD         61     14.1
  0        2           0        5             CIRIM          5      1.2
  0       15           0       46            IR/IRS         46     10.6
  7        1          19        3            PF/CCD         22      5.1
 15        2          62        4               BTC         66     15.2
  3        2          12        5              RF-P         17      3.9
  0       11           0       32           Visitor         32      7.4
 --       --         ---      ---                          ---     ----
 66       65         224      209                          433    100.0


                         Now        Last Semester      Semester Before Last

No. of requests          131            133                    102
No. of nights requested  433            471                    354
Oversubscription        2.99           4.13                   2.95
Average request         3.31           3.54                   3.47


1.5-m Telescope: 158 nights

    Requests        Nights Requested

 Dark    Bright      Dark    Bright         Instrument    Nights    %

  5        1          39        7             ASCAP         46     20.9
 13        0          59        0            CF/CCD         59     26.8
  5        0          20        0            CS/CCD         20      9.1
  0        2           0        9           Ech/CCD          9      4.1
  0       14           0       62             CIRIM         62     28.2
  1        2           5        7              RF-P         12      5.5
  1        1           7        5           Visitor         12      5.5
 --       --         ---       --                          ---    -----
 25       20         130       90                          220    100.0


                         Now        Last Semester      Semester Before Last

No. of requests           45            55                     57
No. of nights requested  220           270                    265
Oversubscription        1.39          1.66                   1.65
Average request         4.89          4.91                   4.65


0.9-m Telescope: 171 nights

    Requests        Nights Requested

 Dark    Bright      Dark    Bright         Instrument    Nights    %

  20       11        123      136            CF/CCD        259    100.0


                          Now       Last Semester      Semester Before Last

No. of requests            31           27                     26
No. of nights requested   259          221                    203
Oversubscription         1.51         1.31                   1.17
Average request          8.35         8.19                   7.81


Schmidt Telescope: 139 nights

CF/CCD          2 requests for   7 nights     4.9
NF/CCD         14 requests for 135 nights    95.1
               --              ---           ----
               16 requests for 142 nights   100.0


                          Now       Last Semester      Semester Before Last

No. of requests            16           17                      9
No. of nights requested   142          156                    125
Oversubscription         1.02         1.11                   1.07
Average request          8.88         9.18                  13.89


ESO 3.6 m Telescope: 12 nights

TIMMI           1 request for   6 nights     54.5
EFOSC1          1 request for   5 nights     45.5
                -              --           -----
                2 requests for 11 nights    100.0


                          Now       Last Semester
No. of requests             2            4
No. of nights requested    11            9
Oversubscription         0.92         0.75
Average request          5.50         2.25


Mark Phillips, Ximena Herreros


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