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observing

AAVSO International High Energy Network: Our Successes!

Success!

Detections, near detections, and upper limits of GRB afterglow fields by AAVSO High Energy Network Members

GRB130427A photometry by P. Wiggins

GRB110918A photometry by A. Oksanen, C. Harlingten, B. Schaefer, and M. Templeton

RR Lyrae


RR Lyrae, 1 degree field, DSS I survey plate
(copyright 1993-1995 CalTech/STScI)

Solar Program, Reducing Data and Email Format

Solar Program, Reducing Data and Email Format

Reducing Data Gathered by VLF Monitoring Systems

(Extracted from SID Technical Bulletin Vol. 3, Number 4, Oct. 1992)

SID Monitoring Overview

SID Monitoring Overview
AAVSO SID Program

Rodney Howe, Solar Section chair & SID leader

So, what are we looking for? Here are a couple references of SID events and their influence on the ionosphere:

The Zurich Classification System of Sunspot Groups

The Zurich Classification System of Sunspot Groups

Contributed by Tom Fleming (FLET)

 

"A" Type: One or more tiny spots that do not demonstrate bi-polarity or exhibit penumbra.

sunspota.jpg
 

"B" Type: Two or more tiny spots that demonstrate bi-polarity but do not exhibit penumbra.

sunspotb.jpg

 

 

 

 

Dances with Wolfs: A Short History of Sunspot Indices

Contributed by Carl E. Feehrer (FEEC)

Revised August 2000

Accuracy and Consistency in the Production of the American Sunspot Number (Ra)

Addendum

ACCURACY AND CONSISTENCY IN THE PRODUCTION OF THE AMERICAN SUNSPOT NUMBER (Ra)

Contributed by Carl E. Feehrer (FEEC)

Guidelines for new solar observers

Guidelines for New Solar Observers

  • Do not look directly at the sun without the protection offered by a filter. For naked eye viewing, a piece of #14 welder's glass provides adequate protection. Do not use overexposed film, dark glasses, or other media that are not designed specifically for solar viewing.

Useful links for new solar observers

A vast amount of useful and informative material relating to the appearance of the sun at different wavelengths, visual and instrumental observation, and analyses and records of sunspot data are available via the Internet. The list below is intended to provide the new observer with some initial points of contact with this resource. Some entries in the list present the full address required to get to a specific display or table.

Solar News

February 20, 2013

  • The NASA SDO mission released a fascinating video showing "rain" from a magnetic loop falling back onto the surface of the Sun.  It's not rain, but hot plasma magnetically levitated off the Sun!

February 15, 2013

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