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CCD Photometry in B and V of Vega and Albireo

EL Obs 2

SPU-21 Fall 2015

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Photometry is the quantitative measurement of both the flux and color of a star. This lab will guide you to understand how to calculate the magnitudes of the stars from CCD images. Because the telescope and camera are so sensitive, and Albireo and Vega are so bright, we will use an Aperture Mask when taking images to prevent our CCD camera from saturating. Using this aperture mask effectively makes our telescope aperture smaller and allows us to collect moreaccurately measure the star flux without the complications of saturated images (which would introduce large systematic errors.

Procedure (at the telescope):

Reductions (in the lab):

Analysis (in the lab):