Sagittarius and Sagebrush


Sagittarius over Sagebrush

Sagittarius and Scorpius shine above the pines and sagebrush of the summit of Mount Kobau, BC.

I’m still working through images I took last week at the Mt. Kobau Star Party. This one looks south toward Washington state amid some smoky air, toward the centre of the Galaxy.

Note the dark lanes in the Milky Way, particularly the prancing “Dark Horse.”

I shot this image the first night I was on the mountain, using a new Sky-Watcher Star Adventurer tracking system.

The image is a stack of five 5-minute tracked exposures with a 24mm lens. The ground is from just one of the exposures to minimize blurring of the ground from the moving camera.

It nicely captures both the sagebrush and the stars of the Milky Way, a quintessential Kobau sky scene.

– Alan, August 5, 2014 / © 2014 Alan Dyer

 

Mount Kobau Nightscapes


Big Dipper Down the Road

The pines and sagebrush landscape of the summit of Mount Kobau are illuminated by the light of just the stars and Milky Way.

This collection of images from Monday night, July 28, captures the night sky above and the land below in classic “nightscapes.”

I took all of these with a camera on a static tripod, with no tracking system involved here. All are about 40-second exposures at ISO 3200 to 6400 with a fast 24mm lens at f/2.5 on a Canon 6D.

However, for the image above I composited two exposures: a shorter 40 second shot for the sky and a longer 1 minute 40 second shot for the ground. I used Photoshop’s Quick Selection tool to make a rough selection of the ground, then the Refine Mask and Smart Radius tool to refine the edge to precisely mask the sky separately from the ground, for individual processing.

The top image shows the Big Dipper and a well-timed meteor, at the end of the summit road on Mt. Kobau, near Osoyoos, BC.

Big Dipper & Arcturus from Mt Kobau

This image takes in the Big Dipper at right pointing down to Arcturus at left. I used Photoshop’s Content Aware Fill to neatly eliminate a power pole and wires.

Sagebrush and Stars

Looking southwest reveals the Milky Way above the sagebrush and pine trees. This is a single exposure, with the ground processed with Shadow detail recovery to bring out the starlit ground.

Pleiades Rising Down the Road

This image, taken about 2 a.m., records the Pleiades star cluster rising down the end of the summit road, with Capella at left. It is a dual-exposure composite: 40 seconds for the sky and 1m40s for the ground.

I gave a talk at this year’s Mt. Kobau Star Party on how to shoot these kinds of nightscapes, illustrated with some of these images shot on site the night before. Very nice!

– Alan, July 30, 2014 / © 2014 Alan Dyer