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Alert Notice 610: Anticipated primary eclipse of b Persei by the third star

January 26, 2018: An AAVSO campaign on the bright star b Per has been launched at the request of Dr. Donald F. Collins, who writes:

Solar Bulletin - Volume 73, Number 12

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

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

Alert Notice 609: Nova Muscae 2018 - PNV J11261220-6531086

January 15, 2018

Event: Nova in Musca - Nova Muscae 2018 = PNV J11261220-6531086

Discovered by: Rob Kaufman (Bright, Victoria, Australia)

Discovery magnitude: 7.0 V (on four frames, using Canon 650D and 55mm lens)

Discovery date: 2018 January 14.4861 UT

Coordinates (2000.0):  R.A. 11 26 15.16  Decl. -65 31 23.3
Position from VSX; measured by Daniel Bamberger (Marburg, Germany) on frames taken by Robert Fidrich (Bakonycsernye, Hungary).

PEP Observer's Guide now in French

Due to another outstanding volunteer effort by Bernard Candela, we are now able to offer a French language translation of the Photoelectric Photometry Observer's Guide.

Many thanks once again Bernard!

 

 

LPV of the Month January, 2018

JANUARY 2018

KHI CYGNI

Discovery

The German astronomer Gottfried Kirch discovered its variability in 1686, when in July of that year he observed that the star had disappeared from the sky, not being visible again until the month of October.

The data

AAVSO Newsletter 75 online

AAVSO Newsletter Number 75 (January 2018) has been published and is online. AAVSO members may download a high- or low-resolution version from here. This issue will be available to non-members when the next issue (Number 76, April 2018) is published.

JAAVSO volume 45, number 2, December 2017, print version now available

eJAAVSO

The Journal of the American Association of Variable Star Observers
Volume 45, Number 2, 2017

The printed version of this issue is now available from Createspace via the link below.

Volume 45, Number 2, 2017

JAAVSO Volume 45 Number 2 2017 is published

eJAAVSO

http://www.aavso.org/apps/jaavso/volumes/

The printed version of this issue will be available soon. Please watch for the announcement on our main web page.

The Journal of the American Association of Variable Star Observers
Volume 45, Number 2, 2017

Articles in this issue

Solar Bulletin - Volume 73, Number 11

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

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

Solar Observing Guide in German

Thanks to an excellent volunteer effort by Ilka Petermann, the AAVSO's Solar Observing Guide is now available in German.

Click here to get to download (free-of-charge)

If you would like to translate the Guide into your native language, please contact Sara at AAVSO HQ. In addition to this new German version, we also have a French translation and Italian and Spanish versions are in progress.

Sunny skies!

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