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Old 14-09-2019, 06:29 PM
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The_bluester (Paul)
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Join Date: Feb 2011
Location: Kilmore, Australia
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I actually found these ones myself in the data, they are visible before any sort of pumping up of the saturation levels. I took it in to photoshop as a combined RGB image so I could flip the red, green and blue on and off quickly while zoomed in on the star in question (This was an image of the trifid and there were only a couple of obviously red stars in the data) I was a bit tempted to approach Ken and see if I could specify the star he may be able to grab it's spectrum.

Comparing what data is really easy to get, the Astrodon RGB set has a lot narrower red filter bandpass than the ZWO, Astrodon is about 625 to 670nm at the 3db points and ZWO is 590 to almost bang on 700. If you look at the cutoff points the ZWO extends (With obviously lower transmission) out to about 725nm where the Astrodon is at zero before 700.
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