27 Minute Single Star Trails

[iceman]

27 minute star trails in a single exposure with the 5DM2.

The image was a little bit noisy, but cleaned up nicely using Topaz De-Noise. There’s a few hotpixels and colour noise but you wouldn’t know unless you looked at the full-res shot.

It was captured at ISO200, f/9 for 27 minutes, with a Canon 5DMk2 and 16-35 lens @ 16mm. I came up with those figures by using an ‘exposure equivalence’ calculator in Photo Pills. I took a short 30 second exposure to get the right ‘light’, and then worked back to see what ISO and f/# I needed if I wanted a 30 minute exposure to have the same ‘light’.

Pretty happy with how it turned out!

- Large (http://www.mikesalway.com.au/download/525)
- Blog (http://www.mikesalway.com.au/radio-telescope-27-minute-star-trails/)

[multiweb]

Smooth. :thumbsup: Good the antennas didn't move much during the exposure.

[iceman]

Thanks Marc, yeh was pleased with that. A little bit of blur like they have is fine.

[gregbradley]

That is a good shot Mike. Nice star colours too.

Greg.

[Derek Klepp]

I like this one

[Ross G]

Great looking startrail photo Mike.

Nice composition.

Ross.

[Larryp]

Very nice, Mike-it really highlights the star colours

[leon]

It did turn out very well Mike, quite like this one.

Leon

[Dennis]

Loved the hi res shot Mike, made me feel like I was on Mars – great work!

Cheers

Dennis

[iceman]

Thanks guys, appreciate the feedback.

[naskies]

Very nice shot, Mike. Long exposure star trails look much smoother than stacks of 30 s shots, don't they? The little bit of movement in the dishes adds to the shot, I think.