Web Publications

Computer Image Processing Techniques for the Production of

AAVSO Observing charts

pdf

Gilbert Weingarten

10 Windward Lane, City Island, NY 10464

Received: October 26, 1991

Abstract

This paper describes the computer image-analysis and chart-drawing programs used in the production of the new series of AAVSO observing charts made directly from astrophotographs as described by Scovil and Leitner (1991).  These programs reduce the time required from tens of hours to under five minutes.  It is in the area of defect-per-chart elimination and object classification, including the proper identification of "double" stars, that modern techniques of computer image processing are most valuable.