Aurora alert "red".

jerry12953 said:
I've just this minute got a "red" aurora alert,. Although its still daylight and cloudy with any luck by the time it gets dark the cloud will have cleared and "bingo!"
Click to expand...
Local flooding to the east of us with the M56 closed at Manchester Airport due to flooding, but the sky is brightening up here in West Cheshire at the moment. No idea if that will prevail/improve of course, hope so though. Would be great to see the aurora.
 
In that London it just so happens that I've seen blue for the first time since.......

which happens to coincide with my first day back at work :mad:
 
I didn't see much in South Gloucester in the visible band. But there was a bit in the IR range. Exaggerated and totally fake colours (the light is somewhere below 720nm)

2025 April Aurora IR 1.JPG
 
Erty said:
I didn't see much in South Gloucester in the visible band. But there was a bit in the IR range. Exaggerated and totally fake colours (the light is somewhere below 720nm)

View attachment 451395
Click to expand...
I just want to respond to your comment about exaggerated and fake colours. It is well known that camera sensors respond more strongly to auroral colours than the eye does. One of the main reasons for this is that at low light levels the eye is less sensitive to colour than a sensor is. The eye is more sensitive to black and white light levels than to colour, so that what appears to us as a faint whitish glow appears much more colourful on a digital sensor.

Of course the photographer can tweak saturation and contrast to get a more colourful result, and the camera automatically does so to produce a jpeg. So there are all sorts of other variables at play.
 
jerry12953 said:
I just want to respond to your comment about exaggerated and fake colours. It is well known that camera sensors respond more strongly to auroral colours than the eye does. One of the main reasons for this is that at low light levels the eye is less sensitive to colour than a sensor is. The eye is more sensitive to black and white light levels than to colour, so that what appears to us as a faint whitish glow appears much more colourful on a digital sensor.

Of course the photographer can tweak saturation and contrast to get a more colourful result, and the camera automatically does so to produce a jpeg. So there are all sorts of other variables at play.
Click to expand...
Yes. Last time we had proper display, the reds very very clear to see. Greens were a bit washed out... And i am also not fake either
 
I changed the chroma to, going from a dirty red-brown to a prettier green. You can't see IR anyway.
 
Aurora alert tonight for all UK but a lot of the country will be under cloud (South Wales looks good after midnight).
 
I too heard about the chance of a good display last night but there was heavy cloud and rain most of the night.

There might, I heard, be another chance tonight.

Dave
 
Last night's solar storm was massive at 2am

1521 nT on my app.

Here's hoping for more of the same tonight if the clouds b****r off.
 
You must log in or register to reply here.
Back
Top