Saturn + COLOUR!, 28th Feb

CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
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Meng Lee
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Post by Meng Lee »

Hi,

nice observation! its my poor RGB alignment judgement in Photoshop. [smilie=shy.gif]
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JY
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Post by JY »

Very nice: what camera did you use?

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JY
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Meng Lee
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Post by Meng Lee »

Hi, I used, Lumenera Skynyx2.0M camera with Astronomik LRGB filters, hardly any colour balancing is done.
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JY
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Post by JY »

What rate of acquisition did you achieve with the camera?
With the Toucam at f30 last week, I could only get 5 images per second without pushing the gain/brightness into bad territory.
As I could not get as many frames as needed, I went to 10 ips but had to push the gain a bit too high...

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JY
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Meng Lee
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Post by Meng Lee »

Hi,

L is 20 fps
RGB is 30 fps

2000 frames taken, 1000 frames per channel is stacked. gain for RG is about 80% and B uses 100% gain.

For Lumenera, even at 100% gain, the background hardly has "snow". I know that for Toucam, at 10 fps, Saturn is too dark, thats why you have to push the gain a lot. Thats where DMK and Lumenera can take the pushing in gain due to their low noise.
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