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Request to Take Astronomy Knowledge Survey

Dear AAVSO Members and Observers,

Dr. Stephanie Slater (Center for Astronomy & Physics Education Research [CAPER] and Capitol College) has requested that active AAVSO members and observers take a survey about basic astronomy knowledge at the following URL:

http://www.surveymonkey.com/s/2YYX9JQ

RS Puppis

RR Lyrae


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

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

 

 

 

 

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.

About VSA

What is VSA?

Variable Star Astronomy (VSA) is the web version of Hands-On Astrophysics. Every chapter has been converted to adobe pdf and word doc formats so that you can download them directly from this website free-of-charge.

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