Affiliation
American Association of Variable Star Observers (AAVSO)
Sat, 08/17/2013 - 21:04
Hi all ,
I did photometry in U , B , V , R , and I Band
For the I band i choose 000-BCL-374 which is the alone star with a Imag in the field of my camera .
The problem is that a 9.9 mag star and have a very bad snr, and my measure is not precise.
Where can i find a better reference star ?
Thanks you
Thibault
Most of the
Thibault,
Most of the brighter comp stars near the nova are in the Hipparcos catalog and have V-I as well as B-V colors listed. What camera and instrument are you using? Is your FOV wide enough to take in any Hipparcos stars?
Bob
Hi,
Thank you ,
000-BLC-955 is hip 100536 which have V-I = 0,39 so Imag is 7,61 .
Thibault