Summer solstice triple sunrise...

as captured this morning from the east end of Buchanan Lane in Castle Valley. The sun rises (#1) and is eclipsed by Baby Carriage Rock, it rises (#2) again and is eclipsed by Castleton Tower, only to rise (#3) a final time to mark the longest day of the year. It’s gonna be hot, too.

Composite of three stacked images, captured between 6:52 am and 7:41 am MDT.

UPDATE: This image is highlighted in this week’s Castle Valley Comments.

The shadow cast by Castleton Tower...

at sunset will slowly creep westward across the lower slopes of Adobe Mesa through the coming months, arriving at its prominent prow at the time of the summer solstice. It’s a slow motion countdown to the longest day of the year.

The Tower’s sharp shadow will translate towards the right in this image of the face of Adobe Mesa during the next two months..

Fifty-two years ago today...

man last walked on the Moon in Taurus-Littrow valley. Here’s tonight’s waxing gibbous Moon, three days from full, with the Apollo 17 landing site indicated by the orange x where astronauts Gene Cernan and Harrison Schmitt (a geologist) performed three days of exploration in 1972.

Taurus–Littrow valley is located on the southeastern edge of Mare Serenitatis, the landing site of Apollo 17, indicated by the tiny orange x.

Elusive comet C/2023 A3 Tsuchishan-ATLAS was finally spotted...

shortly after sunset this evening, low to the west, hovering midway between Venus and Arcturus. Its size and brightness exceeded my expectations and the comet was easily observed with the unaided eye around 8 pm MDT as I snapped a series of images using different lenses.

Despite the nearly full Moon, the comet was initially spotted with binoculars, and then it became an easy naked eye object.

An automobile zooms along Highway 128 on the right, the occupants of which have no idea of the astronomical spectacle they are missing. That’s the planet Venus shining brightly in the lower left of the frame.

Telephoto shot of comet nucleus and tail that stretches more than five degrees across the night sky.