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This image was produced with ChannelCombination of my RGB channels, then a round of noise reduction. I captured my frames in this order, 1 hour each: red, green, blue. See the RGB artifact in the bottom right? That artifact (is there a good term for this?) matches the order I captured my frames, suggesting an object was transiting the celestial background. What would cause that? Could this be a planet in our solar system? Or a comet? How would I go about identifying the source of that artifact?  |
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Any decent planetarium programs should be able to show any known SS objects given the frame size, location and time of capture. Otherwise head here: Minor Planet & Comet Ephemeris Service |
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The geometry is quite unnatural. If this were a single frame, I would suspect something in the optical train. I'd be curious to see the separate channels/ subframes. What equipment are you using? |
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A similar post over on Cloudy Nights on this same target mentioned that it might be asteroid Flora - seems like it was in that area not to long ago.
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Ian McIntyre: See the equipment list here: https://app.astrobin.com/i/q9nddh This isn't a single frame. This was the combined RGB masters for the image in the above link. I CloneStamp'd the RGB artifact out of the published image. What do you mean by unnatural geometry? |
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andrea tasselli: Thanks. I tried finding this in Stellarium but it didn't present an object there. I installed Cartes du Ciel and it showed me Flora (8). So I think that's my guy. |
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Wait until you find about 20 of these guys in your frame. It becomes a nightmare lol. Had that issue on my Ced51 a couple years ago. I ended up just leaving them.
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Also, for what it's worth, Stellarium will show rocks, you just have to enable it.   Flora was in that position on the night of the 12th |
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What do you mean by unnatural geometry? It almost looks like a dovetail connection between the 3 sections. Also would expect a more rounded appearance to the ends. That's why I thought it was a reflection, but obviously the mystery was solved. The images on Cloudy Nights have similar characteristics. |
