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Novadel I mag

Thibault__de__France
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

mrv
Affiliation
American Association of Variable Star Observers (AAVSO)
Sun, 08/18/2013 - 05:37
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

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Thibault__de__France
Affiliation
American Association of Variable Star Observers (AAVSO)
Sun, 08/18/2013 - 13:03
000-BLC-955 is hip 100536

Hi,

Thank you ,

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

Thibault

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