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eJAAVSO

SHUTTER MAPPING CORRECTION FOR SHORT CCD EXPOSURES

 

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Ronald E. Zissell

Mount Holyoke College

161 N. Main Street

South Hadley, MA 01075

 

Presented at the 88th Annual Meeting of the AAVSO, October 30, 1999

 

Abstract

 

Short exposures taken by CCD cameras with mechanical shutters can give field stars measurably different exposure times as a function of the position of the star in the field. For accurate photometry, the images need to be corrected for this error. The methods and formulas for correction are presented with an example of the significance of the correction.

Link to ADS abstract, article and citation information

 
 
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