Another incredible sky this night! This is Comet NEOWISE (C/2020 F3) over the badlands formations at Dinosaur Provincial Park, Alberta on July 22-23, 2020, with the Big Dipper above. A very active thunderstorm system moving northeastward this night but well to the west of me lights the horizon. Parallel bands of red and green airglow tint the sky, as does the blue of lingering summer twilight. Even with the bright sky the comet’s blue ion tail can be traced up to and past the Bowl of the Big Dipper. This is an exposure blend, with the landscape from a stack of seven exposures from 2.5 to 3.5 minutes long at f/2.8 and ISO 1600, stacked to smooth noise, blended with a single untracked 30-second exposure for the sky at ISO 6400 at f/2, all with the Sigma 24mm lens and Canon EOS Ra camera. The ground is illuminated by starlight and sky light only; no light painting was used here. Topaz DeNoise AI applied to the sky; Sharpen AI applied to the ground. Some light sculpting applied to the ground with a Dodge and Burn layer and a luminosity mask, to make the foreground less flat in lighting.
This is Comet NEOWISE (C/2020 F3) over the badlands and formations of Dinosaur Provincial Park, Alberta, on the night of July 14-15, 2020, at about 12:30 am local time with it nearly due north and as low as it got for the night at this latitude of 51° N. A green and magenta aurora colours the northern sky also blue with perpetual summer twilight. Capella is at far right. The comet’s dim blue ion tail is visible here extending some 18° to the top of the frame; the whitish curving dust tail extends about 12° though it becomes lost in the sky still bright with twilight and the aurora this night. This is a classic comet! Very much the dimmer twin of Comet Hale-Bopp from April 1997. This is a blend of 6 exposures for the ground stacked to smooth noise, with a single exposure for the sky, with the 35mm Canon lens and Canon 6D MkII. The ground exposures are 1- and 2-minutes at ISO 1600 and f/2.8, while the single untracked sky exposure was 20 seconds at ISO 3200 and f/2.5. There was no Moon, thus the need to take very long exposures for the ground to reveal details in the landscape here illuminated by just starlight and the faint aurora that was to the north and that was barely visible to the eye. Otherwise the ground would have been a featureless silhouette. So, yes, this image shows much more than the eye could see unaided due to the long exposures, but that’s the point and attraction of astrophotography — to record celestial objects and scenes with more detail than the eye can see. Indeed, any exposure longer than a second is bound to show more than the eye can detect. However, in binoculars the ion tail was barely visible, helped by knowing it was there. But the dust tail could be see to this extent, but in binoculars! However, the comet was still a fine sight naked eye, with an obvious tail about 5° to 6° long to the eye, despite the bright midnight sky. LENR employed in camera on all shots this warm night to remove thermal speckling and colour casts the 6D MkII is prone to. Stacked and masked with Photoshop. Topaz DeNoise AI applied to the sky; Topaz Sharpen applied to the ground, plus a mild touch of ON1 Photo RAW Dynamic Contrast.
A once-in-a-lifetime scene — A panorama of the dawn sky at 4 am on July 14, 2020 from Waterton Lakes National Park, Alberta, Canada with Comet NEOWISE (C/2020 F3) over the iconic Prince of Wales Hotel. Noctilucent clouds glow below the comet in the dawn twilight. Venus is rising right of centre paired with Aldebaran and the Hyades star cluster, while the Pleiades cluster shine above. The waning quarter Moon shines above the Vimy Peak at far right. The Big Dipper is partly visible above the mountain at far left. Capella and the stars of Auriga are at centre. This is an 8-segment panorama with the 35mm Canon lens at f/2.5 for 15 seconds each at ISO 100 with the Canon 6D MkII and stitched with Adobe Camera Raw.
