From: LARRY KLAES (ljk4_at_msn.com)
Date: Tue Jun 22 2004 - 19:37:56 PDT
----- Original Message -----
From: aavso_at_aavso.org<mailto:aavso_at_aavso.org>
To: aavso_at_aavso.org<mailto:aavso_at_aavso.org>
Sent: Tuesday, June 22, 2004 9:02 PM
Subject: Alert Notice 306
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
INTERNET: aavso_at_aavso.org<mailto:aavso_at_aavso.org>
Tel. 617-354-0484 Fax 617-354-0665
AAVSO ALERT NOTICE 306 (June 22, 2004)
SUBJECT: 1. POSSIBLE NEW VARIABLE IN HERCULES: 1835+25 VAR HER 04
2. UPDATE ON REQUEST FOR MONITORING OF 0409-71 VW HYDRI
1. Object: 1835+25 VAR HER 04
Event: Variable (possibly new) in Hercules
Discovered By: Yuji Nakamura, Kameyama, Mie-ken, Japan (reported to Daniel
Green, Central Bureau for Astronomical Telegrams, by Syuichi Nakano,
Sumoto, Japan)
Discovery Magnitude: 11.5 on two five-minute exposure Tri-X films taken
using 200-mm f/4.0 lens
Discovery Date: June 13.632 UT (reported to D. Green, CBAT, June 16)
R.A. (2000): 18h 39m 26.16s (from James Bedient, Honolulu, HI)
Decl. (2000): +26o 04' 10" (from James Bedient, Honolulu, HI)
AAVSO Chart(s): 'e' and 'f' scale charts (thanks to B. Gary for
photometry):
http://www.aavso.org/cgi-bin/searchcharts3.pl?name=var%20her%2004 Report Object to the AAVSO as: 1835+25 VAR HER 04
Observations Reported to the AAVSO: June 15.2462 UT, 12.033 V, ASAS-3,
Notes:
b. The nature of this object is not yet known. It does not appear to be a
c. Observing Strategy:
d. Several images have been taken of this object. An AAVSO website
2. UPDATE ON REQUEST FOR MONITORING OG 0409-71 VW HYI
Event: Request for optical monitoring - visual and CCD(V)
Alert Notice 305 (please see for details) announced the request for
As mentioned in Alert Notice 305, your observations and your immediate
SUBMIT OBSERVATIONS TO THE AAVSO
We encourage observers to submit observations via our web site (online
Many thanks for your valuable astronomical contributions and your efforts.
Good observing!
Elizabeth O. Waagen
This archive was generated by hypermail 2.1.6
: Tue Jun 22 2004 - 20:21:34 PDT
reported by J. Bedient, Honolulu, HI; 18.1375, 12.1 CCDV, R. James, Las
Cruces, NM; 18.3090, 11.8 CCDV, R. Royer, Springville, CA; 19.20, 12.69
CCDV, B. Gary, Hereford, AZ; 19.2279, 12.3 CCDV, James; 19.25, 12.74 V,
ASAS-3, reported by Bedient; 20.3146, 12.5, M. Simonsen, Imlay City, MI;
21.1889, 12.6, Simonsen; 21.2286, 12.6 CCDV, James; 21.960, 13.0, G.
Poyner, Birmingham, England; 22.005, 13.0, Poyner; 22.050, 13.1, Poyner;
22.21, 13.69, ASAS-3, reported by Gary; 22.48, 13.2, K. Itagake, Yamagata,
Japan (reported by S. Nakano via D. Green); 22.4000, 12.8 CCDV, James.
a. Nakamura writes that nothing star is visible around the
discovery position on his about fifty patrol films taken during 1999 -
2004 with the limiting magnitude = 12.
classical nova, and is quite blue. Spectroscopic observations are
scheduled for tonight that we hope will reveal the star's nature.
- Visual observers, please observe it at least once per night. If your
regular observing session is lengthy then please make an additional
observation towards the end.
- CCD observers who can get to 0.03 magnitude precision at 13-14th
magnitude should take time series data of as high quality as possible, for
as long as possible. Observe unfiltered to increase your SNR. We are
looking for orbital cycles, eclipses, superhumps or anything else that
could be found in a cataclysmic variable or a nova.
- If your system cannot perform accurate high speed photometry at that
level of brightness then please take one or two measurements per night
using a V filter to help with long term monitoring of the fading trend. If
possible, take additional observations in B as well.
(www.aavso.org<http://www.aavso.org/>) page will be created tomorrow for this object and the
images placed there. Bruce Gary has created a webpage on this object at
(http://brucegary.net/nova2004/
optical monitoring of the SU UMa-type cataclysmic variable VW Hyi this
summer in support of Target-of-Opportunity (TOO) observations with FUSE by
Dr. Knox Long and colleagues. There were three observing windows for the
satellite, and triggering of the TOO observations was substantially
dependent on the proximity of a superoutburst to the trigger time. (If a
superoutburst occurred while the satellite was observing VW Hyi in
quiescence, the satellite might be damaged.) Since a superoutburst was
due, it was hoped the TOO observations could be triggered during the June
window. Unfortunately, a superoutburst did not occur, and has not to date.
It is expected that one will have happened before the next window (August)
and it is hoped the TOO observations can be triggered during that window.
notification of AAVSO Headquarters of an outburst are absolutely essential
to the success of this observing program. Your observations to date have
been of enormous value, and Dr. Long joins me in thanking you very much.
Please continue to monitor VW Hyi closely and report your observations to
AAVSO Headquarters. AAVSO 'b' and 'd' scale charts may be found at:
http://www.aavso.org/cgi-bin/searchcharts3.pl?name=vw%20hyi
to AAVSO Headquarters.
data submission tool WebObs), or by email in AAVSO format to
observations_at_aavso.org<mailto:observations_at_aavso.org>. If you do not have AAVSO Observer Initials, please
contact Headquarters so we may assign them to you. The answering machine
at AAVSO Headquarters is on nights and weekends; use our charge-free
number (888-802-STAR = 888-802-7827) to report your observations, or
report them via fax (617-354-0665).
Interim Director