>I wonder if I can capture the jet from my backyard? I calculate I
>would need 200 minutes of exposure at f/16 to get the same S/N. But
>it looks like I won't need quite that much. Was this image taken
>from a dark site Jim?
Dave Healy took it from his observatory in a small town in southeastern
Arizona, so: Yes, I think it's pretty dark there. You can learn more if you
click the link from my webpage to the "Huachuca Astronomy Club." (The link
is just below the image itself.)
Jim Shields