Note:
This is the "oldest" version of this memo, when the photometric monitoring was performed with large apertures.
This memo contains photometric information for Proposal 5629 which takes exposures of the standard star GRW+70D5824 in filter F170W in all four WFPC2 CCD's once a week. The dates covered in this memo run from 25 Apr. 1994 through 18 Jul. 1995.
The images were calibrated using the WFPC2 pipeline. Aperture photometry was done using a radius of 30 pixels for both PC1 and the WF CCDs. The first table contains countrates normalized to the 25 Apr. 1994 countrate. The data on this date was taken 1 day after a decontamination which cooled the CCDs from -76° C to -88° C. The second column is the associated error. The second table contains the measured countrates per second with error.
Decontaminations were done on the following dates:
24 Apr. 1994 23 May 1994 13 Jun. 1994 10 Jul. 1994 28 Jul. 1994 27 Aug. 1994 24 Sep. 1994 20 Oct. 1994 19 Nov. 1994 17 Dec. 1994 12 Jan. 1995 11 Feb. 1995 11 Mar. 1995 07 Apr. 1995 06 May 1995 03 Jun. 1995 27 Jun. 1995
-Christine Ritchie
Normalized countrates to 25 Apr. 1994, followed by error.
PC1 WF2 WF3 WF4 Date MJD 1.0000 0.0052 1.0000 0.0061 1.0000 0.0066 1.0000 0.0073 25-Apr-1994 49467.06 0.9428 0.0070 0.9036 0.0084 0.8839 0.0086 0.9061 0.0100 6-May-1994 49478.38 0.9020 0.0069 0.8341 0.0078 0.8387 0.0083 0.8863 0.0097 12-May-1994 49484.27 0.8686 0.0067 0.7805 0.0076 0.7705 0.0081 0.8325 0.0095 18-May-1994 49490.23 0.8379 0.0066 0.7171 0.0072 0.7311 0.0078 0.7770 0.0093 23-May-1994 49495.12 0.9273 0.0071 0.8929 0.0082 0.8646 0.0084 0.9145 0.0101 3-Jun-1994 49506.84 0.9436 0.0071 0.8798 0.0080 0.8504 0.0084 0.9028 0.0098 6-Jun-1994 49509.18 1.0139 0.0072 1.0046 0.0083 0.9674 0.0090 1.0046 0.0095 15-Jun-1994 49518.08 0.9763 0.0070 0.9204 0.0079 0.9012 0.0084 0.9247 0.0089 24-Jun-1994 49527.80 0.9053 0.0067 0.8426 0.0075 0.8143 0.0079 0.8638 0.0086 3-Jul-1994 49536.36 1.0046 0.0071 1.0242 0.0086 0.9827 0.0088 1.0074 0.0095 12-Jul-1994 49545.00 1.0083 0.0072 0.9763 0.0081 0.9204 0.0086 0.9541 0.0092 16-Jul-1994 49549.09 0.9471 0.0069 0.9020 0.0081 0.8646 0.0088 0.8823 0.0089 23-Jul-1994 49556.79 0.9638 0.0069 0.8614 0.0079 0.8504 0.0082 0.8831 0.0089 25-Jul-1994 49558.06 0.9863 0.0070 0.9367 0.0081 0.9307 0.0088 0.9471 0.0093 3-Aug-1994 49567.91 0.9384 0.0068 0.9120 0.0078 0.8888 0.0087 0.9367 0.0091 8-Aug-1994 49572.05 0.9462 0.0069 0.8464 0.0077 0.8211 0.0082 0.8646 0.0087 15-Aug-1994 49579.07 0.8457 0.0064 0.7338 0.0071 0.7112 0.0075 0.7593 0.0078 26-Aug-1994 49590.39 1.0328 0.0073 0.9881 0.0082 0.9710 0.0091 1.0177 0.0095 29-Aug-1994 49593.27 0.9436 0.0068 0.8622 0.0077 0.8264 0.0083 0.8566 0.0087 11-Sep-1994 49606.67 0.9324 0.0068 0.8098 0.0074 0.7980 0.0079 0.8559 0.0085 14-Sep-1994 49609.41 0.9095 0.0066 0.7677 0.0072 0.7489 0.0075 0.8061 0.0081 19-Sep-1994 49614.04 1.0394 0.0073 1.0000 0.0086 0.9550 0.0093 0.9817 0.0096 26-Sep-1994 49621.47 0.9683 0.0070 0.9020 0.0079 0.8798 0.0086 0.9213 0.0090 5-Oct-1994 49630.11 0.9445 0.0069 0.8488 0.0076 0.7907 0.0079 0.8806 0.0088 11-Oct-1994 49636.05 0.9171 0.0068 0.7762 0.0072 0.7614 0.0080 0.8098 0.0084 17-Oct-1994 49642.09 1.0224 0.0072 0.9890 0.0083 0.9358 0.0087 0.9719 0.0093 25-Oct-1994 49650.25 1.0065 0.0072 0.8855 0.0078 0.8702 0.0085 0.9264 0.0093 2-Nov-1994 49658.62 0.9603 0.0068 0.8566 0.0076 0.8069 0.0081 0.8726 0.0085 7-Nov-1994 49663.25 0.9137 0.0068 0.7614 0.0071 0.7178 0.0077 0.8039 0.0082 14-Nov-1994 49670.88 1.0242 0.0072 0.9890 0.0085 0.9772 0.0092 0.9781 0.0093 22-Nov-1994 49678.09 0.9827 0.0070 0.9298 0.0078 0.8750 0.0084 0.9179 0.0089 28-Nov-1994 49684.48 0.9419 0.0068 0.8295 0.0076 0.7936 0.0082 0.8686 0.0089 6-Dec-1994 49692.69 0.8750 0.0066 0.7900 0.0074 0.7338 0.0080 0.7863 0.0085 14-Dec-1994 49700.73 1.0261 0.0072 1.0093 0.0084 0.9497 0.0090 0.9710 0.0093 19-Dec-1994 49705.96 0.9772 0.0069 0.9612 0.0085 0.9045 0.0090 0.9307 0.0092 26-Dec-1994 49712.45 0.9045 0.0066 0.8032 0.0073 0.7713 0.0080 0.7987 0.0082 7-Jan-1995 49724.50 0.8888 0.0066 0.7621 0.0071 0.7015 0.0072 0.7762 0.0081 11-Jan-1995 49728.79 1.0148 0.0072 0.9471 0.0080 0.8823 0.0085 0.9196 0.0091 21-Jan-1995 49738.95 0.9621 0.0069 0.8718 0.0075 0.8272 0.0082 0.9003 0.0089 27-Jan-1995 49744.91 0.9489 0.0068 0.8480 0.0074 0.8076 0.0081 0.8662 0.0087 30-Jan-1995 49747.85 0.8750 0.0065 0.7413 0.0071 0.7086 0.0080 0.7856 0.0083 10-Feb-1995 49758.44 1.0328 0.0072 1.0065 0.0084 0.9568 0.0088 0.9845 0.0093 14-Feb-1995 49762.05 1.0046 0.0071 0.9264 0.0078 0.8823 0.0086 0.9179 0.0090 20-Feb-1995 49768.82 0.9204 0.0067 0.8758 0.0077 0.7995 0.0083 0.8646 0.0088 4-Mar-1995 49780.27 0.8954 0.0066 0.7684 0.0070 0.7777 0.0080 0.7995 0.0083 7-Mar-1995 49783.50 0.9936 0.0071 -.---- -.---- 0.9028 0.0091 0.9333 0.0092 19-Mar-1995 49795.73 1.0018 0.0071 0.8888 0.0075 0.8742 0.0086 0.9154 0.0091 23-Mar-1995 49799.07 0.9745 0.0070 0.8782 0.0079 0.8590 0.0089 0.8654 0.0088 27-Mar-1995 49803.50 0.9087 0.0067 0.7509 0.0071 0.7271 0.0077 0.7958 0.0083 6-Apr-1995 49813.93 1.0309 0.0072 0.9719 0.0081 0.9612 0.0091 0.9585 0.0092 12-Apr-1995 49819.69 -.---- -.---- 0.8774 0.0075 -.---- -.---- -.---- -.---- 22-Apr-1995 49829.84 0.9559 0.0068 0.8622 0.0078 0.8418 0.0084 0.8670 0.0086 24-Apr-1995 49831.68 0.9078 0.0065 0.7352 0.0070 0.7238 0.0078 0.7856 0.0083 5-May-1995 49842.13 1.0233 0.0072 0.9638 0.0080 0.9428 0.0088 0.9754 0.0094 11-May-1995 49848.66 1.0083 0.0071 0.9204 0.0083 -.---- -.---- 0.9324 0.0092 15-May-1995 49852.57 0.9638 0.0069 0.8511 0.0074 0.8257 0.0082 0.8654 0.0087 22-May-1995 49859.65 0.9436 0.0069 0.7936 0.0072 0.7642 0.0079 0.8211 0.0085 31-May-1995 49868.64 0.9982 0.0070 0.9524 0.0083 0.9341 0.0092 0.9350 0.0092 11-Jun-1995 49879.95 0.9954 0.0070 0.8726 0.0078 0.8333 0.0084 0.8921 0.0087 17-Jun-1995 49885.17 0.9656 0.0070 0.8418 0.0074 0.8054 0.0084 0.8654 0.0090 20-Jun-1995 49888.99 0.9358 0.0069 0.7958 0.0072 0.7635 0.0081 0.8128 0.0085 26-Jun-1995 49894.07 1.0158 0.0072 0.9683 0.0083 0.9358 0.0089 0.9367 0.0093 3-Jul-1995 49901.04 0.9845 0.0071 0.8449 0.0074 0.8287 0.0084 0.8742 0.0088 14-Jul-1995 49912.95
Counts per second followed by error.
PC1 WF2 WF3 WF4 Date MJD
160.546 0.834 219.786 1.332 191.955 1.268 198.976 1.452 25-Apr-1994 49467.06
151.356 0.814 198.609 1.387 169.668 1.213 180.302 1.495 6-May-1994 49478.38
144.810 0.820 183.316 1.293 160.990 1.178 176.360 1.442 12-May-1994 49484.27
139.444 0.805 171.554 1.308 147.911 1.210 165.653 1.447 18-May-1994 49490.23
134.524 0.803 157.616 1.259 140.346 1.166 154.597 1.455 23-May-1994 49495.12
148.868 0.829 196.246 1.345 165.959 1.178 181.970 1.502 3-Jun-1994 49506.84
151.496 0.824 193.375 1.314 163.230 1.205 179.639 1.453 6-Jun-1994 49509.17
162.780 0.792 220.800 1.223 185.695 1.213 199.894 1.217 15-Jun-1994 49518.08
156.747 0.777 202.302 1.215 172.982 1.136 183.992 1.155 24-Jun-1994 49527.80
145.345 0.755 185.183 1.222 156.315 1.117 171.870 1.174 3-Jul-1994 49536.36
161.287 0.771 225.113 1.298 188.625 1.151 200.447 1.207 12-Jul-1994 49545.00
161.882 0.789 214.585 1.222 176.685 1.154 189.845 1.198 16-Jul-1994 49549.09
152.055 0.776 198.244 1.299 165.959 1.284 175.550 1.216 23-Jul-1994 49556.79
154.739 0.768 189.321 1.304 163.230 1.148 175.711 1.226 25-Jul-1994 49558.06
158.343 0.756 205.873 1.279 178.649 1.197 188.452 1.233 3-Aug-1994 49567.91
150.661 0.760 200.447 1.206 170.608 1.231 186.380 1.190 8-Aug-1994 49572.05
151.915 0.769 186.037 1.269 157.616 1.184 172.028 1.180 15-Aug-1994 49579.07
135.769 0.746 161.287 1.202 136.521 1.127 151.078 1.087 26-Aug-1994 49590.39
165.806 0.791 217.170 1.243 186.380 1.244 202.488 1.193 29-Aug-1994 49593.27
151.496 0.768 189.496 1.236 158.635 1.199 170.451 1.215 11-Sep-1994 49606.67
149.692 0.768 177.992 1.230 153.179 1.123 170.294 1.158 14-Sep-1994 49609.41
146.016 0.746 168.733 1.205 143.747 1.071 160.398 1.101 19-Sep-1994 49614.04
166.878 0.796 219.786 1.326 183.316 1.299 195.344 1.263 26-Sep-1994 49621.47
155.453 0.771 198.244 1.254 168.888 1.226 183.316 1.176 5-Oct-1994 49630.11
151.635 0.769 186.552 1.239 151.775 1.128 175.227 1.188 11-Oct-1994 49636.05
147.231 0.783 170.608 1.203 146.150 1.183 161.139 1.187 17-Oct-1994 49642.09
164.135 0.788 217.370 1.274 179.639 1.182 193.375 1.206 25-Oct-1994 49650.25
161.585 0.791 194.626 1.248 167.032 1.205 184.332 1.269 2-Nov-1994 49658.62
154.170 0.750 188.278 1.229 154.882 1.173 173.620 1.126 7-Nov-1994 49663.25
146.690 0.773 167.340 1.190 137.784 1.155 159.956 1.137 14-Nov-1994 49670.88
164.437 0.784 217.370 1.330 187.586 1.247 194.626 1.197 22-Nov-1994 49678.09
157.761 0.758 204.362 1.190 167.958 1.174 182.642 1.164 28-Nov-1994 49684.48
151.217 0.764 182.306 1.247 152.335 1.217 172.822 1.237 6-Dec-1994 49692.69
140.475 0.758 173.620 1.227 140.864 1.231 156.459 1.242 14-Dec-1994 49700.73
164.740 0.771 221.820 1.263 182.306 1.250 193.197 1.209 19-Dec-1994 49705.96
156.892 0.758 211.252 1.369 173.620 1.287 185.183 1.249 26-Dec-1994 49712.45
145.211 0.745 176.523 1.206 148.047 1.181 158.928 1.152 7-Jan-1995 49724.50
142.692 0.763 167.494 1.189 134.648 1.057 154.454 1.160 11-Jan-1995 49728.79
162.930 0.797 208.161 1.234 169.356 1.177 182.978 1.215 21-Jan-1995 49738.94
154.454 0.764 191.602 1.176 158.781 1.185 179.143 1.197 27-Jan-1995 49744.91
152.335 0.762 186.380 1.180 155.024 1.176 172.345 1.202 30-Jan-1995 49747.85
140.475 0.738 162.930 1.198 136.019 1.238 156.315 1.183 10-Feb-1995 49758.44
165.806 0.779 221.208 1.265 183.654 1.181 195.885 1.174 14-Feb-1995 49762.05
161.287 0.769 203.610 1.178 169.356 1.217 182.642 1.199 20-Feb-1995 49768.82
147.775 0.759 192.486 1.223 153.462 1.217 172.028 1.223 4-Mar-1995 49780.27
143.747 0.748 168.888 1.153 149.279 1.169 159.074 1.186 7-Mar-1995 49783.50
159.514 0.774 ---.--- -.--- 173.301 1.317 185.695 1.243 19-Mar-1995 49795.73
160.842 0.781 195.344 1.157 167.803 1.211 182.138 1.239 23-Mar-1995 49799.07
156.459 0.769 193.019 1.293 164.892 1.314 172.187 1.225 27-Mar-1995 49803.50
145.881 0.754 165.044 1.184 139.572 1.160 158.343 1.185 6-Apr-1995 49813.93
165.501 0.766 213.599 1.209 184.501 1.246 190.722 1.204 12-Apr-1995 49819.69
---.--- -.--- 192.841 1.168 ---.--- -.--- ---.--- -.--- 22-Apr-1995 49829.84
153.462 0.734 189.496 1.261 161.585 1.221 172.504 1.162 24-Apr-1995 49831.68
145.747 0.727 161.585 1.173 138.931 1.193 156.315 1.186 5-May-1995 49842.12
164.286 0.776 211.836 1.212 180.967 1.201 194.089 1.228 11-May-1995 49848.66
161.883 0.772 202.302 1.342 ---.--- -.--- 185.524 1.233 15-May-1995 49852.57
154.739 0.757 187.068 1.163 158.489 1.164 172.187 1.185 22-May-1995 49859.65
151.496 0.774 174.422 1.169 146.690 1.169 163.380 1.206 31-May-1995 49868.64
160.251 0.764 209.315 1.323 179.308 1.318 186.037 1.225 11-Jun-1995 49879.95
159.809 0.764 191.779 1.247 159.956 1.225 177.501 1.157 17-Jun-1995 49885.17
155.024 0.779 185.012 1.166 154.597 1.253 172.187 1.269 20-Jun-1995 49888.99
150.245 0.779 174.904 1.188 146.555 1.217 161.733 1.198 26-Jun-1995 49894.08
163.080 0.782 212.814 1.302 179.639 1.235 186.380 1.261 3-Jul-1995 49901.04
158.052 0.782 185.695 1.166 159.074 1.223 173.940 1.216 14-Jul-1995 49912.95