After 2 tries yesterday the weather was very kind and the sky at the horizon open up

and the gear the good old never fail

Assisting gear:
Canon 550D not modded
Canon 400mm f/5.6 L focus at infinity
China made intervalometer set to trip shutter every 20 sec for one hour from sunset!
Mini Tower slew and align to the Sun
Comet Data updated into the Hand Controller 8401
Then using the hand controler slew to Comet L4 PANSTARRS
At sunset start the intervalometer and wait for camera to finish.
thanks for viewing
cheers