Introducing Variable Stars Without Using Sophisticated Technology

Kohl, Michael (2006) Introducing Variable Stars Without Using Sophisticated Technology. Journal of the American Association of Variable Star Observers (JAAVSO), 35 (1). pp. 267-271. ISSN 0271-9053 (Print), 2380-3606 (Online)


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Photographs of TV Cas and U Cep taken by students equipped with conventional cameras and mobile, self-made mountings are used to introduce variable stars and, in particular, eclipsing binaries. The first step-by making a simple visual comparison-is to discover that variable stars do exist. The star's brightness change is then estimated by visual comparison with surrounding stars and measured by means of digitized photographs. Plots of luminosity versus time produce a lightcurve that can be discussed in terms of the star's regularity and periodicity.

Item Type: Article
Subjects: Astronomy Education Research
RTSRE Related Research
Depositing User: Mr Saeed Salimpour
Date Deposited: 16 Apr 2017 09:03
Last Modified: 19 Aug 2018 09:25

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