Cloud of gaz ?
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by Roland69
Cloud of gaz ? I don't know what is it
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by Roland69
I can't classify it. Help me !
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by ElisabethB moderator
it's a satellite trail
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by Roland69
Merci ElisabetB...Why it is green and not rectiline ?
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by ElisabethB moderator
Avec plaisir Roland ! 😃
Because he satellite is moving fast it gets caught by only one of the filters. The green one in this case.
It's trail isn't straight because the satellite is tumbling or rotating.Posted
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by Roland69
Encore merci Elisabeth, ce soir je dormirai moins bête !!!
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by Zonix
I think Elisabeth is right.
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by Edd scientist
This is from a poor quality field - the background is a green as a result of problems during the observing - something like bad weather maybe.
Normally a rotating satellite would give a much more regular pulsing trail, and an ordinary satellite would be very straight. In this case, with such an irregular trail, and the fact the field is so poor, I'm wondering if this satellite has been affected by a bad case of the twinkles - a twinkling star is twinkling because its image is disrupted by the atmosphere. The image can actually move around on very small scales. There's a movie of this at http://en.wikipedia.org/wiki/Astronomical_seeing
I wonder if this could have happened here as it moved across? This is just a guess - it's the first time I've seen anything like it!Posted
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by JeanTate
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