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Hi Robin
59 degrees verses 53 degrees is a mammoth error something drastic is wrong. Have you identified the correct stars? That seems to be the most likely problem. Has the CCD image been correctly scaled.
J2000 should be the confirmed epoch of the star coords. However most of the planetarium programs display as Jnow. which is the coords of the object at the selected date after the annual movement is factored in. However discrepencies will generally be only fractions of an arc second.
I have done a manual form of plate solving when preparing images for inclusion inclusion in Stellarium and it requires quite a lot of work to get the coords of the corners to overlay the texture accurately and then find the exact centre.
I actually picked up one or two older images that looked good in low density star fields but when more stars were added the original plate solve had identified the wrong stars.
Barry
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