ITAP of the Milky Way/Aurora Australis above Aoraki National Park, New Zealand

Image from preview.redd.it and submitted by chaka160
image showing ITAP of the Milky Way/Aurora Australis above Aoraki National Park, New Zealand

chaka160 on March 20th, 2023 at 10:34 UTC »

This one's from a fairly solid hike around Aoraki (Mt Cook) National Park and has the oldest hut in the area (that is still on its original site).

From what I understood, the green band is not just airglow, but actually an auroral display that was occurring at the time. This is relatively rare as this spot is fairly inland, so was quite happy to get this little burst of colour.

Additionally, the Milky Way "arch" is a panoramic effect from having to project the full arm of the Milky Way, while accurately trying to make it meet at the horizon. This results in a case of either the Milky Way arm being curved or the foreground being curved.

Here's my EXIF with gear and settings:

Gear used: Nikon Z7, Sigma Art 40 f1.4, Nikkor Z 14-24 f2.8S, SkyWatcher Star Adventurer Pro

Settings:

Sky: 11 shots x 2 rows (roughly), each shot at 40mm, f1.8, ISO2000, 50 second exposures. Stitched in PTGui before being processed in PixInsight.

Foreground: 3 frames x 1 row, each shot at 24mm, f5.6, ISO3200, 120 second exposures. Stacked to reduce noise in Photoshop prior to merge in PTGui.

Final touches in Lightroom and Photoshop.

KeithMyArthe on March 20th, 2023 at 10:53 UTC »

Beautiful image

katerbilla on March 20th, 2023 at 11:21 UTC »

Astonishing work!