Thread: M83 rgb
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Old 21-04-2021, 03:07 PM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Hinchinbrook
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M83 rgb

Not really happy with that one given the ROI with the time spent on it but that's color from my Bortle 9 backyard last Sunday and Monday night. What makes it even more painful for me is that it's shot at 2.6m FL so I did put my back into it.

So this is 59x300s with a QHY8/LUM filter with the CN-212 at prime so F/12.4. Seeing was average to good(ish). Better the first night. Thankfully the wind was down so guiding wasn't impacted.I didn't need any help with that. Sometimes it was quite tight around 0.7" but you could see the changes in seeing quite easily from one sub to the other. Image scale is 0.61asp. The QHY8 has big pixels at 7.8um so it helps a bit. In hindsight I should have gone to 10min exposures but a lot can go wrong in an open field at that FL and I wasn't game. I lost a few subs as is. ASCOM gemini driver disconnecting randomly.

I'll have to try a contrast booster or LP filter instead of LUM next time.
Anyway enough whinging.

1:1 crop [1270x1123 - 468KB]
HD full field [1920x1273 - 3.16MB]
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