• Corpus ID: 118470235

Image Subtraction Noise Reduction Using Point Spread Function Cross-correlation

@article{Hartung2013ImageSN,
  title={Image Subtraction Noise Reduction Using Point Spread Function Cross-correlation},
  author={Steven Hartung},
  journal={arXiv: Instrumentation and Methods for Astrophysics},
  year={2013}
}
  • Steven Hartung
  • Published 8 January 2013
  • Physics
  • arXiv: Instrumentation and Methods for Astrophysics
Image subtraction in astronomy is a tool for transient object discovery and characterization, particularly useful in wide fields, and is well suited for moving or photometrically varying objects such as asteroids, extra-solar planets and supernovae. A convolution technique is used to match point spread functions (PSFs) between images of the same field taken at different times prior to pixel-by-pixel subtraction. Particularly suitable for large-scale images is a spatially-varying kernel, where… 

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