Skip to main content

front page news

All nodes that have this tag will posted to the home page "Recent Activity" block

Alert Notice 550: Nova Sco 2016 No. 2 = PNV J17225112-3158349 = ASASSN-16kd [V1656 Sco]

September 9, 2016:

Event: Nova in Scorpius  [V1656 Sco]

Discovered by:  
- Shigehisa Fujikawa (Kan'onji, Kagawa, Japan; reported to CBAT via M. Soma (National Astronomical Observatory of Japan, Mitaka, Tokyo))
- All Sky Automated Survey for SuperNovae (ASAS-SN) (K. Z. Stanek et al., ATel #9469, published September 7; reported to CBAT via L. Chomiuk (Michigan State University))

Alert Notice 549: RX And Chandra observing campaign

September 1, 2016: Dr. Christian Knigge (University of Southampton) and colleagues have requested AAVSO coverage of the Z Cam dwarf nova RX And in support of Chandra X-ray observations to be carried out via a Target of Opportunity (TOO) triggering when the system is in a suitable outburst.

Registration Now Open for Remaining 2016 CHOICE Courses

Registration is now open for the remaining CHOICE courses to be offered in 2016. You can sign up by visiting the AAVSO Store.

September 5 - 30
CCD Photometry Part I

Alert Notice 548: AR Sco observing campaign

August 18, 2016: Dr. Thomas Marsh (University of Warwick) and colleagues have requested AAVSO coverage of the intriguing binary AR Sco in support of upcoming Newton-XMM observations.

The XMM observations of AR Sco have been scheduled for:
2016 September 10 15:41 - September 11 02:26 UT

Solar Bulletin - Volume 72, Number 07

The July Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: https://www.aavso.org/solar-bulletin

The July SID Data report is available here: https://www.aavso.org/sid-database

Alert Notice 547: Nova Sgr 2016 No. 2 = ASASSN-16ig = TCP J18010780-2631434 [V5853 Sgr]

August 11, 2016

Event: Nova in Sagittarius  [V5853 Sgr]

Discovered by:  
- Koichi Nishiyama (Kurume, Japan) and Fujio Kabashima (Miyaki, Japan) (CBET 4295);
- All Sky Automated Survey for SuperNovae (ASAS-SN) (K. Z. Stanek et al., ATel #9343)

Discovery magnitude:
- Nishiyama and Kabashima - 10.7 unfiltered CCD (2 frames using a 135-mm f/4 camera lens (+FLI 09000 camera))
- ASAS-SN - V~13.3

Alert Notice 546: Campaign on V1687 Cyg (WR 140)

Campaign continued through 2017. Also, updated in Special Notice #419 (20160809) to encourage spectroscopy. 

August 3, 2016: Dr. Noel Richardson (University of Toledo) and colleagues have requested AAVSO assistance in optical monitoring of the bright, colliding-winds binary V1687 Cyg (WR 140, HD 193793) as part of their multi-wavelength campaign on this system.

Solar Bulletin - Volume 72, Number 06

The June Solar Bulletin is now available. Please visit the Solar Bulletin web page to download your copy: https://www.aavso.org/solar-bulletin

The June SID Data report is available here: https://www.aavso.org/sid-database

Pages

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