Date

Filter

No. of exp.

Air mass range

Exp.T sec

March 19, 2013

B

12

1.215 - 1.506

300

March 19, 2013

V

2

1.204 - 1.258

180

March 19, 2013

V

4

1.206 - 1.245

300

March 19, 2013

V

6

1.258 - 1.402

360