The arc of Northern Lights starting a show in the deep twilight over Prelude Lake on the Ingraham Trail near Yellowknife, NWT. This was September 9, 2019. Light from the waxing gibbous Moon behind the camera also illumimates the scene. The autumn colours make for a good contrast with the sky colours. This was from the lookout point above the lake and main parking area and boat launch. The Big Dipper is at left; Capella is at centre; the Pleiades and Hyades are rising at right of centre. This is a 5-segment panorama with the 15mm Laowa lens at f/2 and Sony a7III at ISO 800 and all at 25 seconds. Stitched with PTGui, as ACR and Photoshop refused to joint the left segments.
April 17/18, 2001 aurora, taken from home in Alberta. Looking straight up at zenith. 28mm wide-angle lens at f/2.8 Fujichrome Provia 100F slide film (ultra-fine grained, the finest on the market) exposure 40 seconds. Colors and contrast punched up but not excessively. Taken near the peak of substorm burst which started at midnight and lasted about 10 minutes. This aurora was the result of a major flare that let off on the Sun on Easter Sunday. Big Dipper at top, and zenith point below it
April 17/18, 2001 aurora, taken from home in Alberta. looking south. Part of a series taken looking same direction as substorm hit and subsided, from Image #2 to #15, on Roll #1. (Roll #2 was second camera shooting Provia 100F with 28mm lens and 18mm lens.) All images in this series (#1-02 thru 15) processed in Photoshop with nearly identical enhancements to contrast and colour. Brightness toned down for longer overexposed shots (early ones). This shot: 16mm full-frame fish-eye lens at f/3.5 Ektachrome E200 slide film Exposure 40 seconds Colors and contrast punched up but not excessively. Taken near the peak of substorm burst which started at midnight and lasted about 10 minutes. This aurora was the result of a major flare that let off on the Sun on Easter Sunday. Big Dipper (cut off) at top, and zenith point below it, so vertical dimension takes in well over 90° sweep from horizon to well past zenith to north. This frame had some bad scratches near the zenith point which were rubber stamped out in Photoshop.
