Skip to main content

Novadel I mag

Thibault de France's picture
Thibault de France
Offline
Joined: 2013-03-11

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

Thibault, Most of the
mrv's picture
mrv
Offline
Joined: 2010-12-21

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

000-BLC-955 is hip 100536
Thibault de France's picture
Thibault de France
Offline
Joined: 2013-03-11

Hi,

Thank you ,

000-BLC-955 is hip 100536 which have V-I = 0,39 so Imag is 7,61 .


Thibault

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484