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California Nebula and Pleiades revisited


Andrew*

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At Kielder one and a half years ago, I piggybacked my modified Canon 450D with a manual Zeiss 50mm lens on my telescope and left it doing 30 second exposures for half an hour.

Working on the data in the morning, I was pleasantly surprised with the result:

main.php?g2_view=core.DownloadItem&g2_itemId=668&g2_serialNumber=2

Tonight, I looked at this picture, saw the colour wasn't quite right and wondered if it would be worth a revisit. Again, I'm quite pleasantly surprised. Of course it would be further improved with some more data.

main.php?g2_view=core.DownloadItem&g2_itemId=974&g2_serialNumber=2

Cheers

Andrew

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Got myself a drop-box. :) If anyone fancies having a play with the data, I'd be really interested to see what you can do with it.

http://dl.dropbox.com/u/26871129/Autosave.tif

Thanks Bob,

The Zeiss Tessar lens is an old manual M42-fit lens. Cost under £25 from eBay. These manual prime lenses are ten-a-penny, and can be excellent optically and very suitable for this kind of work as they are very fast, but best stopped down a couple of stops.

Cheers

Andrew

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Is that the F2.8? Really nice colour balance on the Tessar, warm but great especially for skin tones, seems to work well on the EOS.

Yes, it's f/2.8.

I think you will find a lot of the background stuff is dark nebulosity. Take a look at this for reference

Deep Field: From California to the Pleiades | Deep Sky Colors - Astrophotography by Rogelio Bernal Andreo

Your edit looks miles better colour wise than your original.

Regards

Kevin

Thanks Kevin. I think several more hours and much longer subs would be needed to get that stuff. For now I'm happy with the black patches, hinting at what's in there....

Andrew

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