Foveon sensor looks at The Great Nebula in Orion

Started 2 months ago | Photos thread
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DavidWright2010 Senior Member • Posts: 2,659
Foveon sensor looks at The Great Nebula in Orion

Since I'm mostly doing astrophotography these days, I'm using different cameras. But while I was waiting for the Moon to set tonight. I got out the SD1M and the Sigma 150-600 mm (C) lens.

After the obligatory Moon shots, where I used AF to get a sharp Moon image, I switched to manual focus and slewed the mount over to Orion. I was going to use the focus obtained on the Moon, since the SD has no live view to fine focus on a star.

I took a series of 30 second exposures wide open (f/6.3), until I got bored with pressing a button every minute. (14 exposures)

Then I processed and stacked these images.

For a comparision, I had a series of 30 sec exposures with a Pentax camera and a 360 mm F/5.9 OTA. I had used the intervalometer function in the Pentax to run off a series of 60 such exposures; I selected 14 at random and processed them as well.

Here we are - Foveon on left, Bayer on right:

And while this result isn't terrible, the Orion Nebula is the brightest deep sky object in the Northern Hemisphere.

I was also interested is seeing how the 150-600 mm lens did on stars, so here is the full-sized stacked image:

The full non-Foveon image of Orion - 60 exposures of 30 sec each - can be found here.


 DavidWright2010's gear list:DavidWright2010's gear list
Sigma DP1 Merrill Sigma DP2 Merrill Sigma DP3 Merrill Sigma SD1 Merrill Pentax K-1 +1 more
Comment & critique:
Please provide me constructive critique and criticism.
Sigma SD1 Merrill
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