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[vsnet-obs 3533] (fwd) Nova Sgr 1996 photometry (Sostero et al.)
- Date: Fri, 23 Aug 1996 21:25:59 +0900
- To: vsnet-obs
- From: Taichi Kato <tkato>
- Subject: [vsnet-obs 3533] (fwd) Nova Sgr 1996 photometry (Sostero et al.)
- Sender: owner-vsnet-obs@kusastro.kyoto-u.ac.jp
From SOSTERO@elettra.trieste.it Thu Aug 22 22:06:50 1996
From: SOSTERO@elettra.trieste.it
Date: Thu, 22 Aug 1996 15:05:17 +0200 (MET-DST)
Subject: BVRI photometry of N Sgr96
To: nova@nova.la.asu.edu
Content-transfer-encoding: 7BIT
Dear colleagues,
referring to the e-mail of T.Kato (August 19, 1996; Subjet: Re-brightening of
Nova Sgr96), I would like to send you some photometry collected during the last
few weeks, and recently published on IAUC 6453 and 6454. The telescope used was
a 0.4m reflector at Visnjan Observatory (Croatia), coupled with ST6 CCD plus
standard BVRI filters. We used as primary reference star the nearby one (almost
1 arcmin North of the nova itself) provided by Gilmore & Kilmartin (IAUC 6443).
"Dayly photometry"
U.T. V B-V V-R V-I
----------------------------------------------------------------------------
Aug. 9.924, 1996 11.78 +1.00 +0.86 +1.64
Aug. 10.877, 1996 12.04 +0.99 +0.85 +1.65
Aug. 12.855, 1996 12.06 +0.93 +0.82 +1.61
Aug. 13.197, 1996 11.97 +1.00 +0.80 +1.59
Aug. 14.937, 1996 11.97 +0.98 +0.79 +1.60
Aug. 15.868, 1996 11.93 +1.02 +0.85 +1.64
Aug. 16.854, 1996 11.81 +1.06 +0.79 +1.59
accuracy: +/- 0.05 magnitudes
"Short term photometry"
On the nights of August 15 and 16, we made two observing runs, 3 hours long
on each night, in search for short-term brightness fluctuations of N Sgr96.
We alternatively switched the B and I filter, and our "resolution" time was in
the order of 5 minutes. For both nights, we couldn't detect any brightness
fluctuation exceeding 0.02 magnitudes from the mean magnitude of the nova at
that night. This for both B and I filters.
Best regards,
-Giovanni Sostero-
e-mail: sostero@elettra.trieste.it