These were taken in the California desert on July 19:
|Comet NEOWISE, 28mm, f3.2, 105 seconds, iso 400|
|Comet NEOWISE, 380 mm, f5, iso 400, 180 seconds|
The first photo has two people in it who I think were facing the wrong direction.
Update: I'm tracking the comet's fading:
|Images of Comet NEOWISE taken with identical telescope and camera settings.|
Height above the horizon varies and results in a change in the background.