What are the green tracks?


Those are cosmic rays – signatures being (a) only in one band; (b) sharper than the PSF; © squiggly paths – though different kinds of particles produce different kinds of tracks.

Thanks Dustin. I have found another interesting object but the system won’t let me post it - it says I have reached the limit for new users and I should wait 8 hours to submit, but it has already been 15 hours since my first activity!

This is a good one - 157.7025, 0.4029 - looks like it could be a gravitational lensed supernova, almost an Einstein Cross.


I just cranked up your “trust level” to regular user (not new user), so can you try posting now?