[Helvetius]

I am travelling a lot and when going to nice remote places with great dark skies it is always frustrating not to have some decent equipment for astrophoto.
The issue is mainly with the weight of all this equipment that has to be carried by plane. The target is max 7 Kg for expôsures up to 5 min.

Scope: a 80ED for large field only with the 300d or DSI (max 3.5 kg all together)
Mount: EQ3 head with stepper motor on RA ? (weight ?)
For the tripod, I would make a transportable pier, based on PVC pipe, filled with sand on location.
Counterweigths for the EQ mount would be custom made also.

I am not sure if PEC is a problem with such short focal length and if I need a specific controller for the motor.
For autoguiding I think it is not necessary if the polar alignment is well done. With my LX200, I can hold up to 5 min without autoguiding, at 2000 mm focal length. With an EQ3 I don't know.

Your ideas and comments are welcome,
Cheers