R-band (Cousins) data of Mkn 501 in 2008 from the GASP (http://www.oato.inaf.it/blazars/webt/), compiled on July 16, 2008. P.I.: Massimo Villata (villata@oato.inaf.it). Observatories involved: Abastumani, Crimean, Lulin, Roque de los Muchachos (KVA), St. Petersburg, Talmassons. The reported magnitudes were obtained with a 7.5 arcsec aperture radius. To transform them into flux densities of the AGN, one has to subtract the contaminating flux densities from the host galaxy and nearby objects, estimated as 12.0+/-0.3 mJy for the above aperture radius. Then, one should also correct for Galactic absorption (e.g. A_R = 0.052, from NED). The table reports: JD, mag, error, observatory, project. 2454525.73442 13.189 0.017 Roque (KVA 35 cm) GASP 2454526.76953 13.221 0.017 Roque (KVA 35 cm) GASP 2454527.74500 13.221 0.017 Roque (KVA 35 cm) GASP 2454530.75457 13.246 0.017 Roque (KVA 35 cm) GASP 2454532.74546 13.245 0.017 Roque (KVA 35 cm) GASP 2454533.74991 13.236 0.017 Roque (KVA 35 cm) GASP 2454534.75909 13.254 0.017 Roque (KVA 35 cm) GASP 2454536.75719 13.225 0.017 Roque (KVA 35 cm) GASP 2454539.74134 13.210 0.023 Roque (KVA 35 cm) GASP 2454540.75302 13.216 0.017 Roque (KVA 35 cm) GASP 2454541.75226 13.237 0.017 Roque (KVA 35 cm) GASP 2454543.76211 13.232 0.018 Roque (KVA 35 cm) GASP 2454544.74355 13.209 0.017 Roque (KVA 35 cm) GASP 2454545.75038 13.213 0.017 Roque (KVA 35 cm) GASP 2454547.74312 13.213 0.017 Roque (KVA 35 cm) GASP 2454548.72945 13.226 0.017 Roque (KVA 35 cm) GASP 2454550.73478 13.226 0.017 Roque (KVA 35 cm) GASP 2454551.50177 13.225 0.010 Abastumani (70 cm) GASP 2454551.50463 13.225 0.010 Abastumani (70 cm) GASP 2454551.50535 13.223 0.010 Abastumani (70 cm) GASP 2454551.50605 13.225 0.010 Abastumani (70 cm) GASP 2454552.22288 13.235 0.006 Lulin (SLT) GASP 2454553.30670 13.224 0.005 Lulin (SLT) GASP 2454553.56630 13.234 0.032 St. Petersburg GASP 2454553.56792 13.237 0.010 Abastumani (70 cm) GASP 2454553.56934 13.238 0.010 Abastumani (70 cm) GASP 2454553.66222 13.265 0.017 Roque (KVA 35 cm) GASP 2454553.70401 13.235 0.017 Roque (KVA 35 cm) GASP 2454553.73564 13.237 0.017 Roque (KVA 35 cm) GASP 2454554.57120 13.234 0.031 St. Petersburg GASP 2454554.66486 13.241 0.017 Roque (KVA 35 cm) GASP 2454554.70947 13.240 0.017 Roque (KVA 35 cm) GASP 2454554.73600 13.249 0.017 Roque (KVA 35 cm) GASP 2454555.47781 13.231 0.034 Talmassons GASP 2454555.59260 13.218 0.016 Abastumani (70 cm) GASP 2454555.65312 13.230 0.017 Roque (KVA 35 cm) GASP 2454555.69496 13.222 0.017 Roque (KVA 35 cm) GASP 2454555.72896 13.217 0.017 Roque (KVA 35 cm) GASP 2454556.70111 13.236 0.017 Roque (KVA 35 cm) GASP 2454556.73365 13.222 0.017 Roque (KVA 35 cm) GASP 2454557.64647 13.246 0.017 Roque (KVA 35 cm) GASP 2454557.68895 13.226 0.017 Roque (KVA 35 cm) GASP 2454557.72241 13.217 0.017 Roque (KVA 35 cm) GASP 2454558.71765 13.238 0.017 Roque (KVA 35 cm) GASP 2454559.21598 13.236 0.005 Lulin (SLT) GASP 2454560.68982 13.244 0.017 Roque (KVA 35 cm) GASP 2454561.21912 13.236 0.005 Lulin (SLT) GASP 2454561.53610 13.244 0.010 St. Petersburg GASP 2454561.63362 13.227 0.017 Roque (KVA 35 cm) GASP 2454561.67594 13.222 0.017 Roque (KVA 35 cm) GASP 2454561.71563 13.223 0.017 Roque (KVA 35 cm) GASP 2454562.22307 13.238 0.005 Lulin (SLT) GASP 2454562.47023 13.235 0.047 Talmassons GASP 2454563.35978 13.241 0.005 Lulin (SLT) GASP 2454563.46951 13.234 0.010 Abastumani (70 cm) GASP 2454563.47162 13.229 0.010 Abastumani (70 cm) GASP 2454563.47373 13.235 0.010 Abastumani (70 cm) GASP 2454563.47582 13.231 0.010 Abastumani (70 cm) GASP 2454563.48004 13.240 0.010 Abastumani (70 cm) GASP 2454563.48213 13.235 0.010 Abastumani (70 cm) GASP 2454564.16177 13.237 0.005 Lulin (SLT) GASP 2454565.17618 13.232 0.005 Lulin (SLT) GASP 2454566.25739 13.235 0.005 Lulin (SLT) GASP 2454567.20126 13.236 0.005 Lulin (SLT) GASP 2454567.55979 13.236 0.010 Abastumani (70 cm) GASP 2454567.56120 13.247 0.010 Abastumani (70 cm) GASP 2454567.56262 13.245 0.010 Abastumani (70 cm) GASP 2454568.19995 13.220 0.005 Lulin (SLT) GASP 2454568.62919 13.226 0.017 Roque (KVA 35 cm) GASP 2454568.66870 13.214 0.017 Roque (KVA 35 cm) GASP 2454568.69771 13.207 0.017 Roque (KVA 35 cm) GASP 2454569.66585 13.204 0.017 Roque (KVA 35 cm) GASP 2454570.39919 13.224 0.010 Abastumani (70 cm) GASP 2454570.40130 13.230 0.010 Abastumani (70 cm) GASP 2454570.41391 13.230 0.010 Abastumani (70 cm) GASP 2454570.41601 13.231 0.010 Abastumani (70 cm) GASP 2454570.41811 13.225 0.010 Abastumani (70 cm) GASP 2454570.43843 13.227 0.010 Abastumani (70 cm) GASP 2454570.44053 13.228 0.010 Abastumani (70 cm) GASP 2454570.44473 13.227 0.010 Abastumani (70 cm) GASP 2454570.46366 13.225 0.010 Abastumani (70 cm) GASP 2454570.46576 13.225 0.010 Abastumani (70 cm) GASP 2454570.53421 13.226 0.010 Abastumani (70 cm) GASP 2454570.55017 13.227 0.010 Abastumani (70 cm) GASP 2454570.55648 13.230 0.010 Abastumani (70 cm) GASP 2454570.66003 13.217 0.017 Roque (KVA 35 cm) GASP 2454570.70180 13.206 0.017 Roque (KVA 35 cm) GASP 2454570.72558 13.198 0.017 Roque (KVA 35 cm) GASP 2454571.19640 13.221 0.005 Lulin (SLT) GASP 2454571.66463 13.220 0.017 Roque (KVA 35 cm) GASP 2454572.36059 13.232 0.005 Lulin (SLT) GASP 2454572.70335 13.220 0.017 Roque (KVA 35 cm) GASP 2454572.72524 13.229 0.017 Roque (KVA 35 cm) GASP 2454573.70437 13.246 0.017 Roque (KVA 35 cm) GASP 2454574.53210 13.215 0.010 Abastumani (70 cm) GASP 2454574.53351 13.215 0.010 Abastumani (70 cm) GASP 2454575.67594 13.220 0.017 Roque (KVA 35 cm) GASP 2454576.65476 13.234 0.017 Roque (KVA 35 cm) GASP 2454577.64369 13.225 0.017 Roque (KVA 35 cm) GASP 2454578.50000 13.244 0.010 Abastumani (70 cm) GASP 2454578.50281 13.246 0.010 Abastumani (70 cm) GASP 2454578.50564 13.254 0.010 Abastumani (70 cm) GASP 2454578.50704 13.245 0.010 Abastumani (70 cm) GASP 2454578.65443 13.242 0.017 Roque (KVA 35 cm) GASP 2454579.20559 13.235 0.007 Lulin (SLT) GASP 2454579.68370 13.238 0.017 Roque (KVA 35 cm) GASP 2454581.66124 13.268 0.017 Roque (KVA 35 cm) GASP 2454582.58091 13.241 0.017 Roque (KVA 35 cm) GASP 2454582.62297 13.244 0.017 Roque (KVA 35 cm) GASP 2454582.65463 13.237 0.017 Roque (KVA 35 cm) GASP 2454583.15238 13.232 0.005 Lulin (SLT) GASP 2454583.57789 13.240 0.017 Roque (KVA 35 cm) GASP 2454584.58531 13.245 0.017 Roque (KVA 35 cm) GASP 2454584.62647 13.253 0.017 Roque (KVA 35 cm) GASP 2454584.66687 13.249 0.017 Roque (KVA 35 cm) GASP 2454585.49542 13.243 0.010 Abastumani (70 cm) GASP 2454585.50105 13.243 0.010 Abastumani (70 cm) GASP 2454585.50387 13.249 0.010 Abastumani (70 cm) GASP 2454585.50950 13.247 0.010 Abastumani (70 cm) GASP 2454585.51091 13.242 0.010 Abastumani (70 cm) GASP 2454585.51233 13.241 0.010 Abastumani (70 cm) GASP 2454585.51655 13.244 0.010 Abastumani (70 cm) GASP 2454585.51795 13.240 0.010 Abastumani (70 cm) GASP 2454585.52078 13.244 0.010 Abastumani (70 cm) GASP 2454585.52218 13.249 0.010 Abastumani (70 cm) GASP 2454585.52359 13.251 0.010 Abastumani (70 cm) GASP 2454585.53345 13.246 0.010 Abastumani (70 cm) GASP 2454585.54331 13.241 0.010 Abastumani (70 cm) GASP 2454585.58304 13.256 0.017 Roque (KVA 35 cm) GASP 2454585.62444 13.243 0.017 Roque (KVA 35 cm) GASP 2454585.66748 13.248 0.017 Roque (KVA 35 cm) GASP 2454585.69931 13.247 0.017 Roque (KVA 35 cm) GASP 2454586.58230 13.223 0.017 Roque (KVA 35 cm) GASP 2454586.62469 13.219 0.017 Roque (KVA 35 cm) GASP 2454586.64893 13.212 0.019 Roque (KVA 35 cm) GASP 2454587.64987 13.208 0.018 Roque (KVA 35 cm) GASP 2454588.58620 13.224 0.017 Roque (KVA 35 cm) GASP 2454588.63073 13.232 0.017 Roque (KVA 35 cm) GASP 2454588.69758 13.246 0.017 Roque (KVA 35 cm) GASP 2454589.30110 13.235 0.005 Lulin (SLT) GASP 2454589.41082 13.227 0.010 Abastumani (70 cm) GASP 2454589.41153 13.233 0.010 Abastumani (70 cm) GASP 2454589.41296 13.227 0.010 Abastumani (70 cm) GASP 2454589.41367 13.226 0.010 Abastumani (70 cm) GASP 2454589.41475 13.233 0.010 Abastumani (70 cm) GASP 2454589.41618 13.233 0.010 Abastumani (70 cm) GASP 2454589.41706 13.234 0.010 Abastumani (70 cm) GASP 2454589.41777 13.237 0.010 Abastumani (70 cm) GASP 2454589.41848 13.226 0.010 Abastumani (70 cm) GASP 2454590.10144 13.231 0.005 Lulin (SLT) GASP 2454590.49390 13.228 0.006 Crimean (70 cm; ST-7; pol) GASP 2454590.49660 13.224 0.025 Crimean (70 cm; ST-7; pol) GASP 2454590.56342 13.226 0.017 Roque (KVA 35 cm) GASP 2454590.60610 13.213 0.017 Roque (KVA 35 cm) GASP 2454590.63632 13.222 0.017 Roque (KVA 35 cm) GASP 2454591.08868 13.231 0.005 Lulin (SLT) GASP 2454591.54517 13.233 0.017 Roque (KVA 35 cm) GASP 2454591.58786 13.222 0.017 Roque (KVA 35 cm) GASP 2454591.62352 13.216 0.017 Roque (KVA 35 cm) GASP 2454592.62130 13.240 0.017 Roque (KVA 35 cm) GASP 2454593.43653 13.221 0.010 Abastumani (70 cm) GASP 2454593.44074 13.215 0.010 Abastumani (70 cm) GASP 2454593.44634 13.220 0.010 Abastumani (70 cm) GASP 2454593.45056 13.222 0.010 Abastumani (70 cm) GASP 2454593.45476 13.223 0.010 Abastumani (70 cm) GASP 2454594.33170 13.245 0.008 Lulin (SLT) GASP 2454594.45790 13.237 0.019 Crimean (70 cm; ST-7; pol) GASP 2454594.46100 13.236 0.005 Crimean (70 cm; ST-7; pol) GASP 2454594.46669 13.232 0.010 Abastumani (70 cm) GASP 2454594.46741 13.237 0.010 Abastumani (70 cm) GASP 2454594.46883 13.235 0.010 Abastumani (70 cm) GASP 2454594.46955 13.232 0.010 Abastumani (70 cm) GASP 2454594.47027 13.241 0.010 Abastumani (70 cm) GASP 2454594.47097 13.243 0.010 Abastumani (70 cm) GASP 2454595.13552 13.233 0.005 Lulin (SLT) GASP 2454596.33643 13.235 0.009 Lulin (SLT) GASP 2454596.54987 13.238 0.017 Roque (KVA 35 cm) GASP 2454596.59260 13.234 0.017 Roque (KVA 35 cm) GASP 2454596.62316 13.226 0.017 Roque (KVA 35 cm) GASP 2454597.53338 13.234 0.010 Abastumani (70 cm) GASP 2454597.53410 13.236 0.010 Abastumani (70 cm) GASP 2454597.53624 13.244 0.010 Abastumani (70 cm) GASP 2454597.53696 13.239 0.010 Abastumani (70 cm) GASP 2454597.53766 13.235 0.010 Abastumani (70 cm) GASP 2454597.54137 13.223 0.017 Roque (KVA 35 cm) GASP 2454597.58375 13.227 0.017 Roque (KVA 35 cm) GASP 2454597.62039 13.225 0.017 Roque (KVA 35 cm) GASP 2454598.20493 13.232 0.005 Lulin (SLT) GASP 2454598.57368 13.216 0.017 Roque (KVA 35 cm) GASP 2454599.14373 13.227 0.006 Lulin (SLT) GASP 2454600.16342 13.225 0.005 Lulin (SLT) GASP 2454600.66174 13.245 0.017 Roque (KVA 35 cm) GASP 2454601.37067 13.240 0.010 Abastumani (70 cm) GASP 2454601.37210 13.240 0.010 Abastumani (70 cm) GASP 2454601.37495 13.238 0.010 Abastumani (70 cm) GASP 2454601.37566 13.245 0.010 Abastumani (70 cm) GASP 2454601.37780 13.236 0.010 Abastumani (70 cm) GASP 2454601.37852 13.242 0.010 Abastumani (70 cm) GASP 2454601.37924 13.239 0.010 Abastumani (70 cm) GASP 2454601.37995 13.242 0.010 Abastumani (70 cm) GASP 2454601.38066 13.242 0.010 Abastumani (70 cm) GASP 2454601.38280 13.240 0.010 Abastumani (70 cm) GASP 2454601.66897 13.241 0.017 Roque (KVA 35 cm) GASP 2454601.69461 13.243 0.017 Roque (KVA 35 cm) GASP 2454602.63922 13.268 0.017 Roque (KVA 35 cm) GASP 2454604.49203 13.234 0.010 Abastumani (70 cm) GASP 2454604.49274 13.243 0.010 Abastumani (70 cm) GASP 2454604.49417 13.238 0.010 Abastumani (70 cm) GASP 2454605.60637 13.244 0.017 Roque (KVA 35 cm) GASP 2454606.32579 13.232 0.010 Abastumani (70 cm) GASP 2454606.33151 13.226 0.010 Abastumani (70 cm) GASP 2454606.38032 13.233 0.010 Abastumani (70 cm) GASP 2454606.38246 13.230 0.010 Abastumani (70 cm) GASP 2454606.38389 13.228 0.010 Abastumani (70 cm) GASP 2454606.38532 13.229 0.010 Abastumani (70 cm) GASP 2454606.38675 13.230 0.010 Abastumani (70 cm) GASP 2454606.38817 13.228 0.010 Abastumani (70 cm) GASP 2454606.38889 13.228 0.010 Abastumani (70 cm) GASP 2454606.45221 13.230 0.010 Abastumani (70 cm) GASP 2454606.45293 13.233 0.010 Abastumani (70 cm) GASP 2454606.45579 13.233 0.010 Abastumani (70 cm) GASP 2454606.45649 13.232 0.010 Abastumani (70 cm) GASP 2454606.45793 13.225 0.010 Abastumani (70 cm) GASP 2454606.45952 13.226 0.010 Abastumani (70 cm) GASP 2454606.46167 13.230 0.010 Abastumani (70 cm) GASP 2454606.46310 13.230 0.010 Abastumani (70 cm) GASP 2454606.46749 13.234 0.010 Abastumani (70 cm) GASP 2454606.46821 13.229 0.010 Abastumani (70 cm) GASP 2454606.46891 13.228 0.010 Abastumani (70 cm) GASP 2454606.47068 13.228 0.010 Abastumani (70 cm) GASP 2454606.47152 13.230 0.010 Abastumani (70 cm) GASP 2454606.65593 13.243 0.017 Roque (KVA 35 cm) GASP 2454607.63162 13.230 0.017 Roque (KVA 35 cm) GASP 2454608.48446 13.224 0.010 Abastumani (70 cm) GASP 2454608.48588 13.219 0.010 Abastumani (70 cm) GASP 2454608.48660 13.224 0.010 Abastumani (70 cm) GASP 2454608.48730 13.220 0.010 Abastumani (70 cm) GASP 2454608.65296 13.238 0.017 Roque (KVA 35 cm) GASP 2454609.40834 13.210 0.010 Abastumani (70 cm) GASP 2454609.40977 13.219 0.010 Abastumani (70 cm) GASP 2454609.41049 13.210 0.010 Abastumani (70 cm) GASP 2454609.63611 13.229 0.017 Roque (KVA 35 cm) GASP 2454610.15285 13.227 0.006 Lulin (SLT) GASP 2454610.46020 13.240 0.016 Crimean (70 cm; ST-7) GASP 2454610.63554 13.266 0.017 Roque (KVA 35 cm) GASP 2454611.10142 13.235 0.005 Lulin (SLT) GASP 2454611.38270 13.248 0.010 Abastumani (70 cm) GASP 2454611.38341 13.241 0.010 Abastumani (70 cm) GASP 2454611.38413 13.247 0.010 Abastumani (70 cm) GASP 2454611.38484 13.247 0.010 Abastumani (70 cm) GASP 2454611.38556 13.243 0.010 Abastumani (70 cm) GASP 2454611.38841 13.244 0.010 Abastumani (70 cm) GASP 2454611.38912 13.240 0.010 Abastumani (70 cm) GASP 2454611.38984 13.242 0.010 Abastumani (70 cm) GASP 2454611.39341 13.245 0.010 Abastumani (70 cm) GASP 2454611.39484 13.244 0.010 Abastumani (70 cm) GASP 2454612.63589 13.250 0.017 Roque (KVA 35 cm) GASP 2454613.10871 13.242 0.007 Lulin (SLT) GASP 2454613.63111 13.240 0.017 Roque (KVA 35 cm) GASP 2454614.22581 13.254 0.008 Lulin (SLT) GASP 2454614.61188 13.266 0.017 Roque (KVA 35 cm) GASP 2454615.61253 13.258 0.017 Roque (KVA 35 cm) GASP 2454616.62683 13.240 0.017 Roque (KVA 35 cm) GASP 2454617.47872 13.256 0.010 Abastumani (70 cm) GASP 2454617.47943 13.254 0.010 Abastumani (70 cm) GASP 2454617.48086 13.249 0.010 Abastumani (70 cm) GASP 2454617.48157 13.251 0.010 Abastumani (70 cm) GASP 2454617.48372 13.242 0.010 Abastumani (70 cm) GASP 2454618.49325 13.248 0.010 Abastumani (70 cm) GASP 2454618.49468 13.249 0.010 Abastumani (70 cm) GASP 2454618.63386 13.247 0.017 Roque (KVA 35 cm) GASP 2454619.62113 13.255 0.017 Roque (KVA 35 cm) GASP 2454620.63682 13.227 0.017 Roque (KVA 35 cm) GASP 2454621.42660 13.223 0.036 Crimean (70 cm; ST-7) GASP 2454621.63144 13.233 0.017 Roque (KVA 35 cm) GASP 2454622.62077 13.215 0.017 Roque (KVA 35 cm) GASP 2454623.60579 13.222 0.017 Roque (KVA 35 cm) GASP 2454624.57578 13.226 0.017 Roque (KVA 35 cm) GASP 2454625.58855 13.222 0.017 Roque (KVA 35 cm) GASP 2454626.50010 13.212 0.009 Crimean (70 cm; ST-7) GASP 2454626.57599 13.217 0.017 Roque (KVA 35 cm) GASP 2454627.19927 13.219 0.005 Lulin (SLT) GASP 2454627.60174 13.209 0.017 Roque (KVA 35 cm) GASP 2454628.58623 13.201 0.017 Roque (KVA 35 cm) GASP 2454629.60043 13.202 0.017 Roque (KVA 35 cm) GASP 2454630.60732 13.200 0.017 Roque (KVA 35 cm) GASP 2454631.60360 13.200 0.017 Roque (KVA 35 cm) GASP 2454635.60240 13.222 0.017 Roque (KVA 35 cm) GASP 2454636.59923 13.214 0.017 Roque (KVA 35 cm) GASP 2454637.59479 13.226 0.017 Roque (KVA 35 cm) GASP 2454638.16550 13.225 0.005 Lulin (SLT) GASP 2454639.60975 13.235 0.017 Roque (KVA 35 cm) GASP 2454640.08733 13.215 0.006 Lulin (SLT) GASP 2454640.62478 13.214 0.017 Roque (KVA 35 cm) GASP 2454641.11408 13.217 0.005 Lulin (SLT) GASP 2454641.51685 13.208 0.017 Roque (KVA 35 cm) GASP 2454642.50314 13.198 0.017 Roque (KVA 35 cm) GASP 2454643.05385 13.205 0.006 Lulin (SLT) GASP 2454643.51972 13.205 0.017 Roque (KVA 35 cm) GASP 2454647.09262 13.199 0.005 Lulin (SLT) GASP 2454648.08157 13.208 0.006 Lulin (SLT) GASP 2454649.09241 13.219 0.005 Lulin (SLT) GASP 2454650.20313 13.220 0.005 Lulin (SLT) GASP 2454650.33830 13.227 0.009 Crimean (70 cm; ST-7) GASP 2454651.08891 13.219 0.008 Lulin (SLT) GASP 2454652.07453 13.220 0.005 Lulin (SLT) GASP 2454653.39260 13.227 0.020 Crimean (70 cm; ST-7) GASP