A "deepscape" image of the head of Scorpius with the colourful Rho Ophiuchi nebula complex culminating over the icy peak of Mount Custer in Montana, a
Image details
Contributor:
Alan Dyer / VWPics / Alamy Stock PhotoImage ID:
2GYKRHJFile size:
58.1 MB (2.7 MB Compressed download)Releases:
Model - no | Property - noDo I need a release?Dimensions:
5400 x 3763 px | 45.7 x 31.9 cm | 18 x 12.5 inches | 300dpiDate taken:
3 June 2021More information:
A "deepscape" image of the head of Scorpius with the colourful Rho Ophiuchi nebula complex culminating over the icy peak of Mount Custer in Montana, as taken from the north shore of Cameron Lake in Waterton Lakes National Park in Alberta, Canada. Antares is the yellow star, with the globular cluster Messier 4 just to the right. The mountain is lit only by starlight. This is from latitude 49° N so this area of sky is low in the south and just clears this mountain even with Scorpius at its highest, which it was here. This is a blend of tracked and untracked exposures: 4 x 1-minute tracked at ISO 3200 for the sky plus a single 4-minute untracked exposure at ISO 800 for the ground, all with the Samyang 85mm AF lens at f/2.8 on the Canon Ra camera, and on the Move-Shoot-Move MSM tracker, polar aligned with the laser. Out of the 8 tracked shots I took for the set, half were unacceptably trailed. Taken on a very clear night June 2, 2021 with the tracked shots taken after the untracked image. That's a mistake with the MSM as it can take 2 or 3 minutes for the gears to re-engage and start tracking, wasting those shots and valuable time.