INDI Library v1.8.3 Released (02 Jan 2020)

Minor monthly bugfix release with a new RainbowAstro mount driver and improved pier side simulation.

First H-alpha attempt

5 months 2 weeks ago 5 months 2 weeks ago by Herrhausen.
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First H-alpha attempt #42949
Quite often I read on internet forums doing narrowband astrophotography with a one shot color (OSC) cam was nonsense. I never understood why that should be the case. Of course 3/4 of the RGGB pixels remain un-used. But nevertheless it should work.

Two days ago I took a shot at it and attached a Baader 7nm h-alpha filter to my ASI 294Pro cam. In downtown Frankfurt, a heavily light polluted area, I took 12x300s test photos of NGC 7000. This is the "raw" result, just stacked and stretched.

All green and blue pixels are still present. They add nothing but noise to the picture. Once you extract the red channel thus get rid of the green and blue noise, the result is monochrome and looks like this:

I used a TS107-S with TS Flat 2,5 (107/700) on a Losmandy G-11.
The following user(s) said Thank You Gonzothegreat, starman345

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5 months 2 weeks ago
Posts: 748
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First H-alpha attempt #42952
That is superb, and proof that it can be done.....and very well to.. :)

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