The evening of Jul 25, 2020 was supposed to be clouded out.  It was at first, but for a short time, a sucker hole opened and I was able to get a batch of sub-images of Comet NEOWISE.  The total was 57×4 sec shots, but only 47 of those would stack correctly, so a little over 3 minutes of exposure.  Too bad it wasn’t totally clear.   Oh well, it is what it is.

I guess I am lucky to even get images. July is the worst month for an evening comet here along the Gulf coast. We have thunderstorms galore in the afternoons and left-overs of them for hours afterwards and into the evenings.

I did do another rendition of the 47×4 sec data set. This time I aligned on the comet when stacking and it helped it come out better than before. Surprising how much it moved in the short exposure run vs the background stars, which you can see by how long the stars are elongated in this version and the comet is not: