Analysis Of Synthesized Dim Galaxy Images

John F. Jarvis; Francisco Valdes; J. Anthony Tyson

doi:10.1117/12.933490

16 November 1982 Analysis Of Synthesized Dim Galaxy Images

John F. Jarvis, Francisco Valdes, J. Anthony Tyson

Proceedings Volume 0331, Instrumentation in Astronomy IV; (1982) https://doi.org/10.1117/12.933490
Event: 1982 Astronomy Conferences, 1982, Tucson, United States

Abstract

In order to understand better the image description parameters generated by the FOCAS (Faint Object Classification and Analysis System) automatic astronomical image cataloging system, we have synthesized and analyzed images of dim galaxies. These simulated galaxy images were created from brighter galaxy images by geometric size reduction and intensity scaling followed by a convolution with a stellar image. The synthesized images are added at random locations to existing, digital images and the modified images are processed. The simulated galaxies are distinguished from the intrinsic images in the field by matching positions. The image parameters thus obtained serve to increase confidence in the automatic cataloging and calibrate various data reduction procedures.

Citation Download Citation

John F. Jarvis, Francisco Valdes, and J. Anthony Tyson "Analysis Of Synthesized Dim Galaxy Images", Proc. SPIE 0331, Instrumentation in Astronomy IV, (16 November 1982); https://doi.org/10.1117/12.933490

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