Le cœur galactique de la voie lactée de l'été nord au-dessus de la vallée de Blakiston et du ruisseau Blakiston dans le parc national des Lacs-Waterton, en Alberta, sur un Ju
5400 x 3557 px | 45,7 x 30,1 cm | 18 x 11,9 inches | 300dpi
Date de la prise de vue:
13 juillet 2021
Informations supplémentaires:
The galactic core area of the northern summer Milky Way over the Blakiston Valley and Blakiston Creek in Waterton Lakes National Park, Alberta on a July night. Sagittarius is at left over Vimy Peak, with the bright Sagittarius Starcloud over the valley, with the Messier 6 and 7 star clusters low and left of centre. Scorpius with reddish Antares is at right. The pink Lagoon Nebula, M8, is at top, and the globular cluster M22 is at upper left. The dark Pipe Nebula is at top centre. This is a blend of tracked exposures for the sky and untracked exposures for the ground: a stack of 4 x 2-minute tracked at f/2.8 and ISO 1600 for the sky, blended with a stack of 2 x 5-minute untracked at f/4 and ISO 1600 for the ground. A tracked 2-minute exposure through an Kase/Alyn Wallace Starglow filter adds the star glow effect. An additional 8-minute exposure at ISO 400 and f/8 taken early in the evening during blue hour adds some illumination to the distant mountains. However, the majority of the landscape comes from untracked exposures taken just before the tracked ones when the sky was dark, with illumination just from starlight with a more normal colour balance. Forest fire smoke moving in added some haze and lowered contrast. The bright light is the Prince of Wales Hotel, and the light to the left is from the golf course clubhouse. The sky tracker was the Star Adventurer Mini which worked perfectly. The camera was the Canon ESO Ra and lens the Canon 15-35mm RF at 35mm.
