Camera : Canon EOS10D
Lens : EF mount Sigma 8mm 1:4 fisheye
Guide : no guide and used Manffroto 055 tripod

Expose : 10m x 30 = total 300 minutes (5hr)

20060123
in Sang-ju, Korea

it's difficult to get 5hr star trail in film camera because of light polution, film sensitivity, small aperture etc.
But in digital, easy to get it using continuos interval shooting.
u can only compotie with photoshop's "Lignten" layer option.