CRVAL Error in Fixed Projections

SkyView is currently putting incorrect values in the FITS CRVAL keywords of the fixed projections. The CRVAL keywords should be the center of the projection which in fixed projections is not necessarily the center of the image. For CAR, SFL and AIT projections the fixed center is 0,0 while it is 0,90 for the TOAST projection. SkyView is currently giving the center of the image — so that all-sky images, for which these projections are often used, are fine.

The image data themselves are unaffected.

We’ll be installing a patch shortly.

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  1. Pingback: SkyView Blog » Blog Archive » CRVAL value in FITS file fixed

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