1.5m Observing Statistics Jan-Dec 2007 A L W T I O hrs % % % % % ----------------------------------------------- FAST 2030 33.6 95.9 2.2 2.3 1.4 ECH 1167 17.1 94.6 0.5 1.1 0.7 TRES 282 36.8 98.0 1.0 9.1 0.0 1.2m Observing Statistics Jan-Dec 2007 A L W T I O hrs % % % % % ----------------------------------------------- KEP 3397 30.2 92.6 2.2 2.7 2.0 1.5m Observing Statistics Jan-Dec 2006 A L W T I O hrs % % % % % ----------------------------------------------- FAST 1550 35.0 90.2 3.4 2.7 1.0 ECH 1331 28.3 92.4 5.2 3.6 0.1 1.2m Observing Statistics Jan-Dec 2006 A L W T I O hrs % % % % % ----------------------------------------------- KEP 3370 30.6 95.8 4.7 2.0 1.4 1.5m Observing Statistics Jan-Dec 2005 A L W T I O hrs % % % % % ----------------------------------------------- FAST 2150 29.7 91.1 5.2 0.4 1.2 ECH 1233 34.6 92.4 2.0 3.9 0.0 1.2m Observing Statistics Jan-Dec 2005 A L W T I O hrs % % % % % ----------------------------------------------- KEP 1238 24.1 95.6 2.3 0.8 1.8 MINI 1784 38.1 81.6 4.0 5.7 5.9 IRCAM 151 64.9 93.9 0.5 0.0 0.0 1.5m Observing Statistics Jan-Dec 2004 A L W T I O hrs % % % % % ----------------------------------------------- FAST 2168 35.7 96.0 0.5 1.4 0.5 ECH 1331 31.4 96.1 2.3 1.9 1.3 1.2m Observing Statistics Jan-Dec 2004 A L W T I O hrs % % % % % ----------------------------------------------- 4SH 1744 37.5 91.3 3.2 0.6 1.1 MINI 1143 41.2 86.5 7.2 4.6 2.1 IRCAM 365 49.9 91.2 1.6 3.3 3.8 1.5m Observing Statistics Jan-Dec 2003 A L W T I O hrs % % % % % ----------------------------------------------- FAST 2042 26.4 93.0 2.4 2.1 0.3 ECH 1123 36.9 93.9 0.3 4.5 0.2 AFOE 238 22.8 64.1 0.0 34.1 5.5 1.2m Observing Statistics Jan-Dec 2003 A L W T I O hrs % % % % % ----------------------------------------------- 4SH 2879 33.0 83.0 4.0 3.5 4.5 IRCAM 379 53.1 80.3 1.8 13.9 1.7
1.5m Observing Statistics Jan-Dec 2002 A L W T I O hrs % % % % % ----------------------------------------------- FAST 2146 28.8 93.4 1.3 4.7 0.3 ECH 931 38.6 90.5 1.3 9.7 1.7 AFOE 375 42.8 64.9 1.9 33.2 0.0 1.2m Observing Statistics Jan-Dec 2002 A L W T I O hrs % % % % % ----------------------------------------------- 4SH 2093 35.1 92.5 0.4 3.7 3.9 IRCAM 754 40.2 85.1 2.7 9.9 3.1
1.5m Observing Statistics Jan-Dec 2001 Obs Wea T I O Wea/Obs+Wea T+I+O/Obs FAST 1445.0 646.5 15.0 6.0 0.0 31 1 AFOE 252.3 170.5 15.0 12.0 0.5 40 11 ECH 590.5 226.5 5.0 3.0 0.0 28 1 Totals 2287.3 1043.5 35.0 21.0 0.5 1.2m Observing Statistics Jan-Dec 2001 Obs Wea T I O Wea/Obs+Wea T+I+O/Obs IRCAM 445.7 232.5 13.5 30.3 0.3 34 10 4SHOOTER 1089.7 489.7 30.3 18.0 7.0 31 5 Totals 1535.4 722.2 43.8 48.3 7.3
1998 stats 1.2m Telescope Month Hours Hours Lost Hours Lost Hours Lost Avg Length Obs Weather TL problems Inst Prob. Night Sept97 121 77 1 2 Oct97 218 46 5 4 Nov97 129 96 2 2 Dec97 145 186 4 3 Jan98 248 110 4 0 Feb98 70 197 6 17 Mar98 120 150 13 1 Apr98 217 52 5 8 ---- --- --- --- 1268 914 40 37 56% 40% 2% 2% 2259 Total Hours Reported 1.5m Telescope Month Hours Hours Lost Hours Lost Hours Lost Avg Length Obs Weather TL problems Inst Prob. Night Sept97 173 113 2 6 Oct97 287 49 0 0 Nov97 264 71 8 1 Dec97 161 187 0 4 Jan98 292 73 4 2 Feb98 129 151 0 3 Mar98 205 139 1 9 Apr98 260 46 1 1 May98 228 53 0 18 June98 229 17 0 10 July98 157 119 0 2 Sept98 219 82 0 0 Oct98 226 51 0 23 Nov98 268 45 0 8 (start with elec logs) Dec98 254 113 0 1 1997 stats 1.2m Telescope Month Hours Hours Lost Hours Lost Hours Lost Avg Length Obs Weather TL problems Inst Prob. Night Sept96 148 134 5 1 Oct96 168 64 7 0 Nov96 152 93 0 0 Dec96 259 41 12 1 Jan97 190 150 3 12 Feb97 172 123 5 13 Mar97 264 41 6 2 Apr97 214 59 1 0 May97 172 85 2 4 June97 178 18 2 4 July97 93 63 0 0 ---- --- --- --- 2010 871 43 37 68% 29% 1% 1% 2961 Total Hours Reported 1997 stats 1.5m Telescope Month Hours Hours Lost Hours Lost Hours Lost Avg Length Obs Weather TL problems Inst Prob. Night Sept96 185 138 0 0 Oct96 273 71 0 2 Nov96 275 90 0 1 Dec96 299 76 0 0 Jan97 213 157 2 1 Feb97 216 116 0 0 Mar97 301 39 0 0 Apr97 216 57 0 22 (reticon failure) May97 192 85 1 0 June97 232 21 0 1 July97 144 121 1 1 ---- --- --- --- 2546 971 4 28 72% 27% 0% 1% 3549 Total Hours Reported 1996 stats 1.2m Telescope Month Hours Hours Lost Hours Lost Hours Lost Avg Length Obs Weather TL problems Inst Prob. Night Sept 111 48 8.2 21 11 Oct 237.2 55 5.3 .75 11 Nov 256 13 1 0 12 Dec 188.5 104.5 9 0 13 Jan96 200.5 84 10 11 11 Feb 164 130 8 5.5 11 Mar 124.2 50.2 .7 7.3 10 Apr 160 16 8.3 1.7 9 May 104 17 1 0 8 June 113 50 3 0 8 July 67.5 95 3 0 8 ---- --- --- --- 1725.9 662.7 57.5 47.25 69% 27% 2% 2% 2493 Total Hours Reported 1.5m Month Hours Hours Lost Hours Lost Hours Lost Obs Weather TL Problems Inst Problems Sept 196 87 2.2 2.3 Oct 286 34 5.7 0 Nov 303 61 1.5 .5 Dec 276.3 95.5 1.3 0 Jan96 224.5 21 .5 3 Feb 128 121 0 0 Mar 254.7 77.2 1 1 Apr 273 37.5 1.5 4 May 244.2 12 1.2 3 June 189 58.7 0 1.5 July 110.5 159.5 .5 0 Aug 14 26 0 0 ----- ----- ----- ----- 2499.2 790.4 15.4 15.3 75% 24% <1% <1% 3320 Total Hours Reported 1995 OBSERVING STATS 60-INCH HOURS HOURS HOURS AVG HOURS LOST TO LOST TO LOST TO LENGTH Month OBSERVED WEATHER T.L. INST. NIGHT Sept 175 128 0 0 11 Oct 209 118 12 0 11 Nov 146 103 1 3 12 Dec 248 116 1 5 13 Jan 178 162 5 9 11 Feb 123 48 1 3 11 Mar 226 88 0 2 10 Apr 231 67 2 0 9 May 209 37 3 0 8 Jun 213 7 0 0 8 Jul 163 96 2 1 8 TOTALS: 2121 970 27 23 3141 total hours TOTAL PERCENTAGES 67% 31% <1% <1% 48-INCH HOURS HOURS HOURS AVG HOURS LOST TO LOST TO LOST TO LENGTH Month OBSERVED WEATHER T.L. INST. NIGHT Sept(1994) 127 113 5 0 11 Oct 192 94 17 1 11 Nov 166 166 8 1 12 Dec 236 132 8 0 13 Jan(1995) 167 157 12 3 11 Feb 154 127 2 0 11 Mar 172 59 4 0 10 Apr 183 20 2 0 9 May 162 51 4 4 8 Jun 199 13 19 3 8 Jul 142 53 6 0 8 TOTALS: 1900 985 87 12 2984 total hours TOTAL PERCENTAGES 64% 33% 3% <1% 1994 OBSERVING STATS, FIRST TWO TRIMESTERS 60-INCH HOURS HOURS HOURS AVG AVG 1994-1 HOURS LOST TO LOST TO LOST TO LOST TO LENGTH Month OBSERVED WEATHER T.L. INST. ENG. NIGHT Jan 8 nights Echelle 50 44 0 0 7 12.6 7 nights FAST engin 0 0 0 0 86 12.0 10 nights FAST 79 29 0 6 4 11.8 5 nights AFOE 24 35 0 0 0 11.8 Feb 11 nights Echelle 81 46 2 0 3 12.0 16 nights FAST 88 80 0 7 0 10.9 1 nights AFOE 4 6 0 0 0 10.0 Mar 4 nights Echelle 16 23 2 0 5 11.5 20 nights FAST 111 92 1 11 0 10.8 7 nights AFOE 54 18 1 2 0 10.7 Apr 11 nights Echelle 53 47 5 0 0 9.5 19 nights FAST 127 47 2 4 0 9.5 TOTALS: 119 nights 687 467 13 30 105 10.9 1297 total hours TOTAL PERCENTAGES 53% 36% 1% 2% 8% 1994-2 May 6 nights Echelle 41 14 0 0 0 9.2 19 nights FAST 114 38 0 6 0 8.3 6 nights AFOE 32 15 0 0 0 7.8 Jun 12 nights Echelle 25 60 3 0 8 8.0 18 nights FAST 120 18 6 0 0 8.0 Jul 14 nights Echelle 44 70 0 5 0 8.5 17 nights FAST 99 32 1 4 0 8.0 TOTALS: 92 nights 478 247 10 15 8 758 total hours TOTAL PERCENTAGES 63% 33% 1% 2% 1% 48-INCH HOURS HOURS HOURS AVG AVG 1994-1 HOURS LOST TO LOST TO LOST TO LOST TO LENGTH Month OBSERVED WEATHER T.L. INST. ENG. NIGHT Jan 24 nights CCD 222 32 6 11 0 11.3 5 nights SONIC 8 42 0 7 0 11.4 2 nights SSPM 11 0 4 11 0 13.0 Feb 23 nights CCD 118 133 1 12 0 11.5 5 nights SONIC 37 17 0 2 0 11.2 Mar 24 nights CCD 127 86 1 0 14 9.5 7 nights SSPM 45 28 0 0 0 10.4 Apr 20 nights CCD 118 60 2 2 0 9.1 4 nights SONIC 15 5 2 16 0 9.5 6 nights engin 60 10.0 TOTALS: 120 nights 701 403 16 61 74 10.5 1255 total hours TOTAL PERCENTAGES 56% 32% 1% 5% 6% 1994-2 May 31 nights CCD 172 61 2 0 19 8.2 Jun 22 nights CCD 115 54 5 2 0 8.0 8 nights SSPM 18 33 6 7 0 8.0 Jul 24 nights CCD 108 79 3 0 0 7.9 7 nights SONIC 8 27 0 24 0 8.4 TOTALS: 92 nights 421 254 16 33 19 8.1 743 total hours TOTAL PERCENTAGES 57% 34% 2% 4% 3% 1993 Observing Stats HOURS HOURS HOURS AVG HOURS LOST TO LOST TO LOST TO LENGTH Month OBSERVED WEATHER T.L. INST. OF NIGHT 60" Sept 7 nights Echelle 48 32 5 0 12.1 5 nights Zmach 47 0 3 0 10.0 70% 24% 6% 0% Oct 10 nights Echelle 61 58 2 0 12.1 14 nights Zmach 79 68 2 0 10.6 7 nights AFOE 45 23 4 0 10.3 54% 44% 2% 0% Nov 13 nights Echelle 106 50 9 3 12.9 17 nights Zmach 86 101 4 0 11.2 53% 42% 4% 1% Dec 10 nights Echelle 86 38 8 0 13.2 14 nights Zmach 89 68 4 0 11.5 7 nights AFOE 38 44 2 0 12.0 56% 40% 4% 0% TOTALS: 104 nights 685 482 43 3 11.7 TOTAL PERCENTAGES 56% 40% 4% <1% 48" Sept 17 nights CCD 103 52 0 0 9.1 66% 34% 0% 0% Oct 26 nights CCD 125 138 6 1 10.4 5 nights SONIC 31 11 0 18 12.0 47% 45% 2% 6% Nov 23 nights CCD 172 101 0 1 11.9 6 nights SONIC 28 42 0 1 11.8 58% 41% 0% 1% Dec 17 nights CCD 85.5 71 11.5 2 10.0 9 nights SONIC 45 32 1 11 9.8 5 nights SSPM 33.5 15 1.5 6 11.2 52% 37% 4% 6% TOTALS: 109 nights 623 462 20 40 10.5 TOTAL PERCENTAGES 54% 40% 2% 4%Latest update 04/05/04 by EF