Quote:
Originally Posted by OzEclipse
Beautiful capture Greg.
It's only 750m at my dark site which would explain why I don't get it as much 
Seriously, it's hit and miss. I've been travelling with a mate past week. We saw it in the east from Parkes and Cowra and have been talking & trying to work it out.
I also got a time lapse video from SPSP that has low sparse cloud and high altitude skyglow, not as strong as yours.
https://vimeo.com/user4541365
Its all in that last 50 metres Joe! It really depends on Solar activity I am fairly sure.
If it's emission not refection, why is is stronger near the horizon and fainter overhead?
Near the horizon, there is additive effect of looking sideways into a thicker concentration of it. However there there are many stops of extinction present near the horizon to cancel out the additive effect of looking sideways into it?
Joe |
Its a chemical reaction to UV in the upper atmosphere and emission at night. I guess you are looking at more of it when near the horizon.
Quote:
Originally Posted by RickS
That's amazing, Greg!
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Thanks Rick. I was surprised as it looked like a regular night.
Greg.