Method for automated digital "blinking" of photographic plates

Thomas A. McGlynn, Edwin L. Turner

Research output: Contribution to journalArticlepeer-review


The Princeton PDS microdensitometer has been used in a novel manner to automatically blink plates. The plates are photometrically calibrated using the known brightness profile of certain galaxies in the field to provide the density-brightness relation for the plates. All objects present on the plate are catalogued. This procedure is repeated for another plate and the catalogues for the two plates are compared to determine objects which have changed significantly in luminosity between the plates. These objects are then checked visually to eliminate the effects of plate flaws and to determine if the luminosity change is the result of a physical change in the object.

Original languageEnglish (US)
Pages (from-to)188-193
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Nov 21 1980

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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