APOD 4/26: Dots and Arrows?
APOD 4/26: Dots and Arrows?
What in the world do those big dots and arrows indicate? Seems like they should have been explained......
- Pete
- Science Officer
- Posts: 145
- Joined: Sun Jan 01, 2006 8:46 pm
- AKA: Long John LeBone
- Location: Toronto, ON
The red, green, and blue dots are star images resulting from combining exposures through different color filters: http://asterisk.apod.com/vie ... php?t=1218
Thank you Pete,
I understood that the arrows pointed at fragments of the comet, but the giant colored dots were really bizarre... I just visited the ESO website and confirmed your explanation.
Now I am even more surprised at the fact that the big dots didn't come in for any kind of explanation in the text.... they're a pretty dramatic component of the photo and certainly don't look like a star-trail.
Ben
I understood that the arrows pointed at fragments of the comet, but the giant colored dots were really bizarre... I just visited the ESO website and confirmed your explanation.
Now I am even more surprised at the fact that the big dots didn't come in for any kind of explanation in the text.... they're a pretty dramatic component of the photo and certainly don't look like a star-trail.
Ben