I'd also be interested in knowing more - back in the days of film I used to take photos from the flight deck, when circumstances allowed, of the aurora - Using a Standard lens "wide open" , ISO 400, anything more than a 20 sec exposure would almost always produce star "trails", due to aircraft motion, usually manifesting in the roll plane. Also using 20 -40 sec exposure you' be lucky to image anything much fainter than magnitude 3-4 stars.
To capture stuff as this image has, down to what looks like mag 6 ( basically dimmest stars visible to naked eye) or dimmer (some of the nebula in the pic), without any significant "smudging" means the photographer must have used a heck of a fast set up.
FWIW anyone able to indentify any constellations/asterisms in the image? ....I'm a bit rusty..
Last edited by wiggy; 4th Oct 2016 at 10:56.