Previous Article Next Article Table of Contents
CTIO Telescope Time Request Statistics (1Jun94) (from CTIO, NOAO Newsletter No. 38, 1 June 1994) The tables below summarize the telescope time requests for second semester 1994. On the 4-m telescope, the requests are almost at the all-time record level achieved for first semester, and well above the equivalent period last year, when the f/8 secondary was out of service almost all of the semester. The demand for the R-C spectrograph is such that the telescope could (in principle) be block-scheduled with that instrument for the entire semester. The shut-down associated with work on the primary mirror, declination motors, and other activities (as outlined in one of the preceding articles) has obviously reduced the number of nights available below "usual" levels; the reduced availability coupled with the heavy demand has led to an over-subscription factor greater than 3; it is nearly 4 for dark time. The demand on the smaller telescopes seems to be roughly normal, when compared with the requests a year ago; there is a slight decline on the 1.5-m. 4-m Telescope: 128 nights available Requests Nights Requested Dark Bright Dark Bright Instrument Nights % 1 1 4 3 ASCAP 7 1.8 9 5 28 14 Argus 42 10.7 32 11 118 35 CS/CCD 153 39.1 3 11 9 40 Ech/CCD 49 12.5 0 4 0 12 IR/Imager 12 3.1 1 4 3 11 IR/IRS 14 3.6 18 0 64 0 PF/CCD 64 16.4 2 0 5 0 PF/Plates 5 1.3 4 3 14 6 RF-P 20 5.1 1 4 8 17 OSIRIS 25 6.4 __ __ ___ ___ ___ ____ 71 43 253 138 391 100% Now Last Semester Semester Before Last No. of requests 114 120 107 No. of nights requested 391 404 355 Oversubscription 3.05 2.42 2.23 Average request 3.43 3.37 3.32 ___________________________ 1.5-m Telescope: 165 nights available Requests Nights Requested Dark Bright Dark Bright Instrument Nights % 2 0 13 0 ASCAP 13 4.9 23 2 96 10 CF/CCD 106 39.7 3 4 12 21 CS/CCD 33 12.4 0 3 0 13 Ech/CCD 13 4.9 1 5 2 31 IR/Imager 33 12.4 0 2 0 11 IR/IRS 11 4.1 3 3 12 13 RF-P 25 9.4 0 2 0 10 Visitor 10 3.7 0 5 0 23 OSIRIS 23 8.6 __ __ ___ ___ ___ ____ 32 26 135 132 267 100% Now Last Semester Semester Before Last No. of requests 58 67 69 No. of nights requested 267 340 301 Oversubscription 1.58 2.00 1.80 Average request 4.60 5.07 4.36 ____________________________ 1-m Telescope: 177 nights available Requests Nights Requested Dark Bright Dark Bright Instrument Nights % 7 4 62 37 ASCAP 99 96.1 0 1 0 4 CS/2DF 4 3.9 _ _ __ __ ___ ____ 7 5 62 41 103 100% Now Last Semester Semester Before Last No. of requests 12 19 13 No. of nights requested 103 189 101 Oversubscription 0.58 1.09 0.57 Average request 8.58 9.95 7.77 ____________________________ 0.9-m Telescope: 169 nights available Requests Nights Requested Dark Bright Dark Bright Instrument Nights % 28 9 151 59 210 100% Now Last Semester Semester Before Last No. of requests 37 36 36 No. of nights requested 210 220 207 Oversubscription 1.24 1.31 1.21 Average request 5.68 6.11 5.75 ____________________________ Schmidt Telescope: 105 nights available CF/CCD 17 requests for 104 nights 85.2 Plates 3 requests for 18 nights 14.8 __ ___ ____ 20 122 100% Now Last Semester Semester Before Last No. of requests 20 16 18 No. of nights requested 122 133 104 Oversubscription 1.16 1.23 0.96 Average request 6.10 8.31 5.78 ____________________________ 0.6-m Telescope: 181 nights available ASCAP 3 requests for 40 nights (Average request - 13.33 nights)
Previous Article Next Article Table of Contents