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Color or Monochrome DMK?

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#1 G. Hatfield

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Posted 27 March 2009 - 12:30 PM

I'd like to buy a DMK camera for my Solarmax 60. I'm specifically interested in color images of the sun. Do images from the color DMK cameras have noticeably poorer resolution than the monochrome cameras? I have tried colorizing monochrome images, but the results are less than satisfactory (see attached).

Any advice would be much appreciated.

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#2 Mert

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Posted 27 March 2009 - 01:13 PM

I remember to have read quit a lot of info just
about this kind of question on this forum.
Join and browse, I'm sure Rainer will help you out!!

#3 imjeffp

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Posted 27 March 2009 - 01:54 PM

Aren't narrowband solar images essentially greyscale to begin with? Unless you're overlaying a white-light image, there's no color to begin with.

I don't see anything wrong with your colorized sample myself!

#4 Bart Declercq

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Posted 27 March 2009 - 02:57 PM

H-alpha is a specific wavelength of Red light. If you were to use a color camera, the only pixels recording anything useful would be the red pixels, the others simply will be black and useless.

So for H-alpha imaging, using a color camera brings exactly *zero* additional value, on the contrary you will lose a lot of useful information.

You're much, much better of using a monochrome camera and colorising the result - as another posted remarked, H-alpha is actually "mono-chrome" imaging anyway (mono = single and chrome = color).

And I don't see anything wrong with your colorisation either.

#5 Gus_Smedstad

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Posted 27 March 2009 - 08:10 PM

I think that image is great, actually.

- Gus

#6 chris go

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Posted 27 March 2009 - 09:48 PM

H Alpha is essentially monochrome. Using a monochrome camera will give you a better resolution. You can go to my site to see some HAlpha images using the DMK.

http://astro.christo...ansit/index.htm

Regards,
Chris

#7 G. Hatfield

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Posted 29 March 2009 - 11:47 PM

Thanks for all the input. I did join the DMK Yahoo group and found what I needed. Monochrome it is!

George

#8 sfugardi

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Posted 30 March 2009 - 04:12 PM

George, excellent observatory! You must get a ton of good seeing nights out there in the desert. Can't wait to see some future planetary shots with your setup

Regards,
Steve

#9 G. Hatfield

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Posted 01 April 2009 - 05:11 PM

Thanks Steve. I bought a DMK21 firewire from OPT. It was actually on sale ("used, but like new"). Now I have to figure out how to use Registax, etc.

Yes, the weather is very good for astronomy in Las Cruces, especially in the winter. We have a great club here too (Astronomical Society of Las Cruces) with lots of very good imagers to learn from.

George






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