La voie lactée de l'été nord au-dessus du lac Middle Waterton à la plage Driftwood, dans le parc national des Lacs-Waterton, en Alberta, une nuit de juillet.Sagittaire est à
5400 x 3568 px | 45,7 x 30,2 cm | 18 x 11,9 inches | 300dpi
Date de la prise de vue:
12 juillet 2021
Informations supplémentaires:
The northern summer Milky Way over Middle Waterton Lake at Driftwood Beach in Waterton Lakes National Park, Alberta on a July night. Sagittarius is at centre, with the pink Lagoon Nebula, M8, right of centre. The Dark Horse complex of dust lanes is over the peak at right. The Scutum Starcloud is at top centre. The bright object at far left is Jupiter, with dimmer Saturn to the right, with both over Vimy Peak and in Capricornus or thereabouts! 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 single 8-minute untracked at f/5.6 and ISO 800 for the ground, taken with Long Exposure Noise Reduction on to eliminate most thermal hot pixels this warm night. A tracked 2-minute exposure through an Kase/Alyn Wallace Starglow filter adds the star glow effect. An additional short 30-second exposure at ISO 400 and f/4 is for the lights of the Prince of Wales Hotel and their reflections, to preevent them from overexposing too much which they would in the long ground exposure. Forest fire smoke moving in added some haze and lowered contrast. 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 15mm.
