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Full-Text Articles in Instrumentation
Maximizing Precision Of Variable Star Photometry With Digital Cameras In Suburban Environments, David Hergesheimer
Maximizing Precision Of Variable Star Photometry With Digital Cameras In Suburban Environments, David Hergesheimer
STAR Program Research Presentations
Photometry is the measure of the brightness of an object. When making such measurements on stars, it is done is units of magnitude, which is on a logarithmic scale with a base of ~2.512. Variable star photometry using a commercially available digital camera is not going to be as accurate and precise as equipment used by astronomers, and because of the logarithmic scale of magnitude used, determining how much of an effect different error reduction strategies have is not straightforward, and is best done experimentally.
My research is conducting photometry on variable stars (changing brightness) with a digital camera, and …
Digital Aperture Photometry Utilizing Growth Curves, William Chandler Overcast
Digital Aperture Photometry Utilizing Growth Curves, William Chandler Overcast
Masters Theses
Point source extraction is critical to proper analysis of images containing point sources obtained by focal plane array cameras. Two popular methods of extracting the intensity of a point source are aperture photometry and point spread function fitting. Digital aperture photometry encompasses procedures utilized to extract the intensity of an imaged point source. It has been used by astronomers in various forms for calculating stellar brightness. It is also useful for doing analysis of data associated with other unresolved radiating objects. The various aperture photometry methods include the two-aperture method, aperture correction, and growth curve method.
The growth curve method …