This was a 15-second exposure with the O-GPS1 in Astrotracer mode, which is about all you can get out of it at 500mm! Still, it's pretty impressive that Pentax lets you get this kind of thing with nothing more than your camera (if it's a K-3ii or newer) and a tripod. Yes, I get better astrophotos out of my thousand-dollar telescope and thousand-dollar German equatorial mount, but (1) that's $2K blown, and (2) that rig, with 12V battery, mount, counterweight, and tripod (2" diameter legs) weighs about 75 pounds. I can put the O-GPS1 in my pocket and hardly know it's there.

[HoutHans]

Very nice and impressive technology indeed!