Another night, another galaxy

Last night's Seestar session produced a fine image of Bode's Galaxy M81.

After that, I turned the scope toward Pluto. There's no way to know which of these dots is Pluto, so the solution is to shoot it again tonight and see which dot has moved relative to all the others. (I compared the first and last images in the sequence, taken 24 minutes apart, and could not tell from those.) That's what Clyde Tombaugh did back in 1930, of course back then he had to spend hours exposing photographic glass plates, then flip between them to see any changes.

BTW, I presume the line in the first image is a satellite. With the distance it traveled in 10 seconds and the lack of red/white dots from a flashing light, it is not an airplane. There were some other frames in the stack that had shorter tracks that didn't make it to the final image. And when I did the manual Deep Sky Stack, none of them were evident. Back in 1930, Tombaugh didn't have to worry about satellites streaking across his images.

This the Pluto Discovery Telescope at the Lowell Observatory, Flagstaff, Arizona taken back in 2002. It is a relatively-modest 13-inch refractor. Like the Seestar, it is an astrograph, i.e. a photographic instrument with no eyepiece.

Update: I shot Pluto again the next night and compared the images. After manually aligning the two images in Photoshop, I think I found it. It almost merged into a star, but it is the lower of the two dots.