YAFST - Yet Another Star Trail

So, after a few days on-call where I had to resort to boring blips, I decided to do something a bit more adventurous tonight.

Coming home from work, I noticed that there wasn't a cloud in the sky and quickly headed up to Calton Hill to take a long exposure photo. This is my longest star trail photo so far - I only stopped because I couldn't feel my fingers any more.

50 x 180" exposures for a total of 2.5 hours.

Definitely view this one large...