I need a powerful and portable flashlight-suggestions please

[Essexman]

http://www.amazon.co.uk/SKYRAY-Lume...8&qid=1415991742&sr=8-3&keywords=sky+ray+king

Do you have this torch?, Have you used it for long duration on full power? What batteries did it come with?

 

[pysen78]

I know this isn't what you asked for but perhaps a composite photo? Set camera up in the afternoon, take few shots. Have brew while waiting for stars to come out. Shoot the sky. Compose in photoshop.
Works for this guy:
http://www.wired.com/2014/11/thierry-cohen-darkened-cities/

 

[Gonzo]

I'm guessing there's no vehicle access to where you're looking to shoot from? If so, a Land Rover with flood lights (perhaps on two wheel ramps at front for lift) would throw a bit of light up there.

 

[petrochemicals]

To be honest any illumination on 30 second exposure is going to give a lot of exess light, I'd take it up with a photography expert first. Sky light filter seems a better possibility.

 

[cave_dweller]

The rocks ain't gonna move, but the planet does (relative to the stars). My take on it would be to take multiple exposures, then composite them in software. If necessary you could do a 30 minute (or more) exposure on the rocks, and mix it with a 30 second exposure on the sky. Just a thought. I know a bit about photography, and a bit about torches, but exactly nothing about using torches for nighttime photography, so take this with a pinch of salt!

 

[Mike_B]

Theres more to that night sky and illuminated foreground than adding torchlight - this might be of some use? http://www.ukriversguidebook.co.uk/...4&t=106419&p=713205&hilit=durdle+door#p713205