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Old 17-07-2022, 09:31 PM
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Doogs38 (Alex)
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Join Date: Jan 2013
Location: Brisbane, Australia
Posts: 438
M20 Trifid Nebula with ASI482MC planetary camera

My ASI482MC camera has been sitting unused so I replaced the 294MC with this uncooled planetary camera to see how it would perform on a bright DSO. The smaller FOV of the 482 vs the 294 is well suited (for my scope) to something like the M20. I did a single 300s trial image using a gain of 200 and nearly fell of my chair! While the image was noisy and had visible amp glow, it was full of colour and detail and I hopped around the room like a little kid making strange noises that amused my wife. Would be a good EAA camera. Soooo I tried to get about 2hrs of 180s subs but ultimately only got 36 mins due a plate solving issue that I eventually resolved. I used a UHC-S filter hence the emission nebula doesn't have the lovely pink colour that seems to be captured in a true broadband image; the orange colour is more Ha-ish. I will play/experiment/collect more data when I'm next home and there's no moon. Alex

SW120ED x 0.85 Reducer/Flattener
12 x 180s subs, ASI482MC
Baader UHC-S filter
Darks, flats, dark flats. APP, PS, DeNoise and lightly cropped.
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Last edited by Doogs38; 18-07-2022 at 12:51 PM.
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