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24 November Solar Bulletin - Volume 68, Number 10

The October 2012 Solar Bulletin is now available!

20 November Special Notice #311: HST COS to observe CW Mon 2012 November 30 - December 1

November 20, 2012:  The HST COS far ultraviolet observations of the dwarf nova CW Mon will be taking place 2012 November 30 20:54:49 through 2012 December 1 02:26:15 UT (AAVSO Special Notice #309, www.aavso.org/aaso-special-notice-309).

19 November Eye candy from Bright Star Monitor South

At the moment, I'm taking a short break from doing some programming and beta testing for our latest AAVSOnet telescope to come online, Bright Star Monitor - South.  This is a twin of the Bright Star Monitor that ran in New Mexico for the past few years, but installed on the opposite side of the world.  BSM-South is hosted by Peter Nelson (NLX) a few dozen miles east of Melbourne, Australia, and has been operating in a "hands-on" capacity for several months now. 

15 November Special Notice #310: Continued observing of V452 Cas requested

November 15, 2012: As announced in [baavss-alert] on 15 November 2012, Dr. Chris Lloyd (University of Sussex) has requested that the SU UMa-type dwarf nova V452 Cas continue to be observed in order to maintain the good historical coverage of its superoutbursts. He writes: "Over the past several years we have accumulated enviable coverage of V452 Cas' superoutbursts but the general monitoring has dropped off recently as people have moved on to more interesting objects.

13 November Special Notice #309: Next Set of HST COS targets announced

* revised November 20, 2012: CW Mon - scheduled observation dates and times are 2012 November 30 20:54:49 through December 1 02:26:15 UT; see details in AAVSO Special Notice #311.

13 November Special Notice #308: Observations crucial starting tonight for FL Psc (ASAS J002511+1217.2)

November 13, 2012: The HST COS far ultraviolet observations of the WZ Sge-type cataclysmic variable FL Psc (ASAS J002511+1217.2) will be taking place 2012 November 15 22:48:37 UT through November 16 04:49:58 UT (AAVSO Special Notice #305 www.aavso.org/aavso-special-notice-305).

09 November New eJAAVSO preprint: ROAD intensive observations of variables stars

ej223: "ROAD (Remote Observatory Atacama Desert): Intensive Observations of Variable Stars" by F.-J. Hambsch

www.aavso.org/ejaavso

08 November Special Notice #307: Observations crucial tonight for SDSS J001153.08-064739.1

November 8, 2012: The HST COS far ultraviolet observations of the dwarf nova SDSS J001153.08-064739.1 have been scheduled for 2012 November 9 20:42:29 UT through November 10 04:57:33 UT (AAVSO Special Notice #304).

Your observations from tonight are crucial to confirm whether the target is at minimum (which it must be for HST to observe it).

07 November Special Notice #306: Telluric standards for T Tau stars campaign spectroscopists

7 November 2012: Further to AAVSO Alert Notice 473 (www.aavso.org/aavso alert-notice/473), Principal Investigator Darryl Sergison (University of Exeter) requests that spectroscopists planning to observe the targets RY Tau, DN Tau, and/or DR Tau image the corresponding telluric standards below at the same time:

Telluric standard for RY Tau
HD 283567     B9     Vmag = 10.38   RA 04 20 33.072  Dec +28 39 08.55

06 November 101st Annual Meeting of the AAVSO - Archive

Meeting Archive Materials:

06 November Alert Notice 473: T Tauri stars observing campaign

November 6, 2012:  Darryl Sergison (University of Exeter) has requested AAVSO assistance with a campaign he is organizing on six T Tauri stars. He writes: "In Autumn 2013 I [and my PhD supervisor Tim Naylor of Exeter University are] undertaking a new study into the nature of pre-main-sequence low mass stars, using time series optical spectroscopy and UV-Visual-IR photometry...to build a clearer picture of the environment around young solar-type stars and characterise their various disc, accretion, and outflow structures.

05 November New eJAAVSO preprint: Period Analysis of 55 Semiregular (SR/SRa/SRb) Variables

ej222: "Period Analysis of AAVSO Visual Observations of 55 Semiregular (SR/SRa/SRb) Variables"
 by J. R. Percy and P. Jx Tan

www.aavso.org/ejaavso

05 November Special Notice #305: HST COS observations of FL Psc (ASAS J002511+1217.2) scheduled

November 5, 2012: Further to AAVSO Alert Notice 471 (Gaensicke, Patterson, and Henden), the HST COS (Cosmic Origins Spectrograph) far ultraviolet observations of THE NEXT TARGET from the list, the WZ Sge-type cataclysmic variable

                     FL Psc (ASAS J002511+1217.2),

05 November Publication deadlines to remember

APPROACHING PUBLICATION DEADLINES TO REMEMBER

December 15, 2012    AAVSO Annual Report     (Section Reports, Meeting Minutes, Treasurer's Report, Director's Report, Development)

December 15, 2012    AAVSO Newsletter          (any contributions)

31 October Special Notice #304: HST COS observations of SDSS J001153.08-064739.1 scheduled

October 31, 2012:  Further to AAVSO Alert Notice 471 (Gaensicke, Patterson, and Henden) and AAVSO Special Notice #298, the HST COS (Cosmic Origins Spectrograph) far ultraviolet observations of THE NEXT TARGET from the list, the dwarf nova-type cataclysmic variable

                           SDSS J001153.08-064739.1,

31 October Special Notice #303: VLBA and e-MERLIN observations of SS Cyg underway

October 31, 2012:  The cataclysmic variable SS Cyg is beginning to decline from what appears to be a narrow outburst, and was at visual magnitude 9.1 on 2012 October 30, according to observations in the AAVSO International Database.

31 October New eJAAVSO preprint: Ross variables revisited. II by W. Osborn and O. F. Mills

ej 221: "The Ross Variable Stars Revisited. II" by W. Osborn and O. F. Mills

www.aavso.org/ejaavso

29 October VStar version 2.14.0

A new version of VStar has just been released (the previous version was released in April 2012).

To get it, please visit http://www.aavso.org/vstar-overview and click "Download VStar Now".

26 October New eJAAVSO preprint: on Variability type determination and high precision ephemeris for NSVS 7606408

ej 220: "Variability Type Determination and High Precision Ephemeris for NSVS 7606408" by R. Furgoni

www.aavso.org/ejaavso

24 October Special Notice #302: HST COS observations of 1RXS J023238.8-371812 scheduled

October 24, 2012: Following on AAVSO Alert Notice 471 (Gaensicke, Patterson, and Henden, www.aavso.org/aavso-alert-notice-471) and AAVSO Special Notice #298 (www.aavso.org/aavso-special-notice-298), the HST COS (Cosmic Origins Spectrograph) far ultraviolet observations of THE NEXT TARGET from the list, the WZ Sge-type cataclysmic variable

24 October Four new eJAAVSO preprints

ej216: "BVRI Photometry of SN 2011fe in M101" by M. W. Richmond and H. A. Smith

ej217: "The Pulsation Period of the Hot Hydrogen-Deficient Star MV Sgr" by J. R. Percy and R. Fu

ej218: "Period Changes in RRc Stars" by J. R. Percy and P. J. Tan

ej219: "The Citation of Manuscripts Which Have Appeared in JAAVSO" by A. U. Landolt

www.aavso.org/ejaavso

24 October Special Notice #301: Retraction of Special Notice #300

October 23, 2012:  Multiple observers have checked the Hyades and found no evidence of the transient mentioned in by I. Shelton in ATel #4513.  There is no object visible in the field according to observations by Patrick Schmeer, Emmanuel Conseil, and Ulisse Munari.  Doug Welch notes that the object appears non-stellar on the image that was posted to Shelton's website, and suggests it may be the product of a cosmic ray hit.

23 October Two new eJAAVSO preprints

ej214: "VSX J071108.7+695227: a Newly Discovered Short-period Eclipsing Binary" by M. Damasso, et al.

ej215: "A Practical Approach to Transforming Magnitudes onto a Standard Photometric System" by D. Boyd

www.aavso.org/ejaavso

19 October Alert Notice 472: Monitoring of HD 5980 requested for multiwavelength campaign

October 19, 2012:  Dr. Noel Richardson (Universite de Montreal, formerly at Georgia State University) has requested monitoring of the Small Magellanic Cloud eclipsing binary HD 5980 (in Tucana) as part of a multiwavelength campaign he is coordinating to study this unusual system. Dr. Richardson writes:

17 October Solar Bulletin - Volume 68, Number 9

The September 2012 Solar Bulletin is now available!

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