18:50
The call for prayer of Isha marks the end of the twilight and the start of night. Just opened the roof of the observatory.
Tonight's targets are: V0725 Tau Photometric Data and some dark frames at -30C. CCD is at -25C right now.. still cooling down.
Water reservoir is at 19C ; i have set the cooling point to 13C.
21:10
50 Dark Frames of 120 seconds each have been acquired.
V0725 Tau is still at 27 degrees altitude (very low for any scientific data acquisition) in the eastern horizon.
00:12
Focused the telescope with photometric I filter. Autoguiding at a 10th magnitude star at 0.5 Hz with the combination of Adaptive Optics and Mount autoguiding capability.
90 Seconds of exposure still saturated the star.
00:20
Changed it to 30 seconds now.. nope, still too much light! Lowered it to 15 seconds now and voila! a very nice 40K counts.
Acquisition begins now!
03:15
Have got 162 images in total. Now taking 15 sec Darks for some time now.
04:51
Reduced the data and performed photometry analysis in Maxim DL. As it turned out V0725 Tau star has right now 7.855 magnitude in I band. Submitted the data to AAVSO.