Autumn Milky Way and intense airglow

[gregbradley]

Taken 2 weekends ago at my dark site. Intense airglow.
Sony A7r3, Sigma Art 14mm F1.8.
6 panel mosaic each panel approx. 6 images.

Processed in Lightroom then stacked in Sequator and stitched in Microsoft ICE.

http://www.pbase.com/image/167491829/large

Greg

[archioptic]

Excellent shot Greg. Loving that air glow!

[JA]

Loving the "sunset" landscape :thumbsup:

Best
JA

[Retrograde]

That's amazing Greg. That airglow is something else. :thumbsup:

[gregbradley]

I seem to often get it at my dark site. Perhaps because its at 800 metres altitude.



Cheers JA. You never know what is going to show up in a nightscape.



Yes its pretty intense.

Greg.

[OzEclipse]

Beautiful capture Greg.



It's only 750m at my dark site which would explain why I don't get it as much :lol:

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

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

[RickS]

That's amazing, Greg!

[gregbradley]

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.



Thanks Rick. I was surprised as it looked like a regular night.

Greg.

[topheart]

Well done Greg!!
Beautiful!
Does it interfere in any way with deep space imaging??
Cheers,
Tim

[gregbradley]

Thanks Tim.

No it doesn't. What I do is setup my telescope on an imaging run and then go out into the paddock and take a nightscape. Typically apart from a refocus every now and then (or at least until primary mirror temps and ambient is less than .5C different).

A nightscape like this only took me about 15 minutes out in the field, probably less.

I normally setup a tracker mount but this time I had left it at home and so this was a really crappy tiny weak tripod so amazing it worked out. I use a self timer on the camera and electronic first curtain shutter to remove any chance of vibrations.

Greg.

[topheart]

Thanks Greg!
Cheers,
Tim