View single post by Robert
 Posted: Mon Feb 22nd, 2016 09:39
Robert



Joined: Mon Apr 2nd, 2012
Location: South Lakeland, UK
Posts: 4066
Status: 
Offline
Depends what my maximum dark exposure time is. I would like to aim for 20 second interval, at f4 and ISO 6,400 I Might get there if I push the NEF's in PP...

It would probably mean a 16 second maximum exposure, plus recovery time?

An added complication being I would like to turn the camera about 70ยบ from North to West as dawn breaks. I am trying to think of a way to do that, very slowly and not while exposures are being made.

I have ideas, but not the experience, YET!!! I am thinking Land Rover steering box, with a Q mount welded to the drop arm shaft. Calibrate the steering wheel and turn it manually say an inch or two per exposure? Whatever works.

These fancy computer controlled racks and heads are all very clever but for occasional use something simple and manual would get the job done. Main thing is it has to be solid and steady, else the resulting video could induce seasickness with the viewer!!! :lol:



____________________
Robert.