Deep Eta carina in Hydrogen Alpha 300mm lens

[tornado33]

Here is Eta Carina in 7Nm Ha light, with the 300mm f2.8 flourite lens from Bert.
2x15 mins ISO400. Baader 7Nm Ha filter and Idas uv/ir filter. Modded 350D. Processed in Iris and PS, only red channel used and turned to greyscale.
Scott

[Peter Ward]

Scott,

Nice wide field, but it is hard to tell how well the system is working at that teeny image scale....do you have something larger?

Cheers
Peter

[strongmanmike (Michael)]

That's great Scott, I love Ha only images

Mike

[Ric]

I always enjoy those ghostly images that Ha brings out.

A fine image Scott

Cheers

[Matty P (Matt)]

Nice image Scott, there is so much detail there.

Well done.

[leon]

I agree, those Ha images are always a fovourite of mine as well, must be because of the good old days when I did everything in Black and White.

Great effort Scott, well done indeed.

leon

[tornado33]

Thanks all
Here is a bigger version.
Of course Im only getting the red pixels in the sensor, so Im only getting rouughly 1/3 of the therectical resolution. Pity Canon didnt offer a DSLR without the bayer filter array.
Scott

[strongmanmike (Michael)]

Overall a nice Schmidt looking shot that Scott and the stars look good to the corners. Yes, it really screams.."what would it look like without the bayer filter arary???"

I would love to whack a Pentax 6X7 lens on my Proline (35mm format lenses won't reach focus with the filterwheel in place) and shoot some wide field Halpha (...just for Fred )

Mike

[tornado33]

Thanks
I think years ago Kodak released an experimental monochrome chipped digital camera, but only a few were ever made
Scott

[Robert_T]

That is truly amazing detail, you can almost fall into it and dissappear

Incredible that this is taken with a DSLR


Probably a dumb question, but what happens if you shoot in colour with H alpha? Did you take this as monocrome or convert into monochrome later?

cheers,

Rob

[tornado33]

No its a good question, and what I do is calibrate the original unprocessed raw images in Iris. When Im left with the finished stacked image, I drop all the blue and green data, leaving only red, I then turn that to monochrome. I could leave it as red but as theres no other colour, its best to leave it as monochrome. If I left the other colours in, that wouldnt do well, as theres virtually no details in the other colours, only noise. Users of monochrome CCD cameras dont have to worry about that as all the pixels can see the red light.
Scott