The loaded images just to test were infact only 0. This maybe the issue - I only have access to a very long focal length telescope (Institution based) and the best I can do is 0.81'/pixel (that would be 3x3 binning). I deleted the two identical images and the reloaded just a single one and again it did not resolve. Just to test I loaded a copy of the image that did resolve and it did not resolve the second time around.

I first loaded two images from a time sequence - one resolved and one did not. Check the headers in your two images to see if they are really identical. Alternatively, there was something different about the two 'same' images? If desired, SHARE them to me (MZK) in VPhot and I will also look at them. Is your image scale close to this value? Might address this ambiguity? The bottom line is that normally, two identical images should obviously plate solve similarly.ģ. Pinpoint will platesolve within +-25% of this value or fail. Alternatively, I will ask IF you have a telescope setup on your VPhot account (under admin>telescope>? The default image scale for platesolving is 2'/pixel. The previous comment probably does not really answer the question of why one plate solved and the second did not. Actually, why did you upload an identical image anyway?Ģ. VPhot checks headers to avoid submittal of a duplicate result from an identical image. An EQ mount on a tripod compensates for Earth's rotation, and allows your telescope to stay fixed on an object. Plate-solving is the engine of many scientific studies for. Here's why an equatorial telescope mount, or 'GEM' is essential for astrophotography.

If the analysis is successful it is possible to calculate the Right Accession (RA) and Declination (Dec) of the image center which tells where exactly is pointing the telescope, image orientation, resolution and etc. Loading two identical images with exactly the same headers is not a good practice. Plate-solving is a image analysis that detects the stars and then tries to identify them using catalogs of know stars.

Plate solving software