Aurora Color Cascade

6:50 AM, 2015-01-04, Talkeetna Mountains: Since 11pm, I'd shot active aurora all night, curtains & coronas dancing overhead, maxing out my 20mm lens. As the full moon set, the aurora became delicate, tinged with red -- I only learned in postprocessing.

Artist: JANE_E_GNASS ;

Exposure Date: 2015:01:04 06:50:17;

ImageDescription: >> Officially NOT morning twilight <<(V) “Color Cascade” Spiking auroral arc, top down: red, green, violet blue colors in spiraling auroral curtain above snowy Talkeetna Mountains; north view starry morning twilight sky; upper Little Susitna River, Matanuska-Susitna Valley, Wasilla & Palmer, Alaska — Copyright © 2015 Jane E Gnass (janegnass@gmail.com) — Astrophotography Nightsky Night Sky Aurora;

Copyright: ©_2014 ;

Make: NIKON CORPORATION;

Model: NIKON D700;

ExposureTime: 2/1 s;

FNumber: f/2;

ISOSpeedRatings: 2500;

ExposureProgram: Manual;

ExposureBiasValue: 0/1;

MeteringMode: Pattern;

Flash: Flash did not fire;

FocalLength: 24 mm;

FocalLengthIn35mmFilm: 24 mm;

Software: iPhoto 9.6.1;