Still trying to hunt down the elusive Procyon B, but so far, no success.
However, what I did notice is that Procyon A “appears” to have changed its position against the fainter background stars when I compare a crop from an up-sampled DSS Image and the Mewlon ASI 290 MM image.
I have uploaded a low-res animation (blink rate = 2 secs) to show how the centroid of Procyon appears to wander between the DSS and Mewlon images, when registered using the faint BG stars.
Could this be a simple case of Parallax based on the older DSS plate and the more current Mewlon image? Or is it more likely to be an image acquisition artefact?
Or, is the Universe expanding...
Cheers
Dennis