Thu, 08/12/2021 - 16:27

Hi everyone,

I saw a posting on the Recurrent Nova RS Ophiuchi and decided to image it a couple of nights ago. The resulting image was posted on Astrobin ( I did a mouse-over image with one from the DSS database which showed the FOV before the star got brighter. Today I am looking at the posted image and noticed that there was a star in the lower right quadrant of my image that was missing from the DSS image. Not sure what to make of this.

I blinked through the individual capture frames to see if the object was moving. And it didn't seem to.

Perhaps someone could take a look at the Astrobin posting and let me know what they think. The star is relatively easy to spot by just blinking back and forth using the mouse-over function.

Opinions would be appreciated.


American Association of Variable Star Observers (AAVSO)
High proper motion star

Hi Eric,

It is a high proper motion red dwarf and you are recording it in its current position, which is different than the DSS one from decades ago.

Also see that the DSS color image appears elongated because the star already moved between the exposures in different colors.