IMWCS USNO-A2.0 Catalog Example Image

This shows the alignment of USNO-A2.0 stars with a test image after a world coordinate system has been fit. The coordinates plotted are based on header keywords describing a plane-tangent system fit by matching HST Guide stars and sources found in the image.

[Image] [Image stars] [Image with Nominal WCS] [ID] [[Image with Fit WCS] [ID]