Sagittarius and Scorpius Rising

By: Alan Dyer

Mar 12 2013

Tags: , , , , , , , , ,

Category: Constellations, Milky Way, Nightscape

5 Comments

Aperture:f/2.8
Focal Length:24mm
ISO:800
Shutter:301 sec
Camera:Canon EOS 5D Mark II

This is the view from early this morning as the centre of the Milky Way rises above the desert landscape of New Mexico.

Sagittarius (at centre) and Scorpius (at right) contain the rich starfields of the galactic core. To the eye this scene looks as if bright clouds are moving in to hide the stars, but in fact the glows are stars – clouds of stars forming the glowing bulge of the galactic core. Superimposed on the glowing core are lanes of dark interstellar dust, such as the silhouette of the Dark Horse prancing at centre, with lanes of dust flowing across the sky and converging onto yellow Antares, the heart of Scorpius right of centre.

I shot this before dawn this morning, March 12, from our site in southwest New Mexico. Skies were perfect.

This is a stack of five 5-minute exposures with the 24mm lens at f/2.8. A sixth exposure taken through a diffusion filter added the star glows to accentuate the bright stars and their colours. The foreground is from one exposure and has been processed to bring out the details, here lit only by starlight.

– Alan, March 12, 2013 / © 2013 Alan Dyer

 

5 comments on “Sagittarius and Scorpius Rising”

  1. fantastic. did you have ‘long exposure noise reduction’ enabled?

  2. Great photo.

  3. Hi — the ISO is listed at left — ISO 800. And yes, as the text says, this is a stack of 5 exposures, each 5 minutes, and stacked in Photoshop. The stacking is for noise smoothing. And the camera was on the little iOptron SkyTracker to follow the stars, so the ground is blurred.

  4. Hi, really nice photo, wish I was there. Can I ask what ISO used and is this on an equatorial mount or stacked later in photoshop? Thanks!


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