| Date | JJ | Mag GBp |
|---|---|---|
| 01/01/2025 | 60677,545 | 19,3 |
| 02/01/2025 | 60678,541 | 19,7 |
| 03/01/2025 | 60679,537 | 19,6 |
I have made measurements the last 3 nights with GBp, g’, r’, i’ filters. I confirm Marc Serrau’s observation that the target has dropped a lot. It is possible that we having exceeded the maximum. Magnitude 20 is a limit for our instrument in relation to the observation conditions. Bad weather is now also a handicap in San-Pedro-Atacama-Chile for the next few days. We will close the observations.
PS : for the measurements with g’-r’-i’ filters, unfortunatly we did not found official magnitudes of the comparaison stars.
Roger Hellot, AITP