NLC alert july 17 / 18

[ediacara]

Erno Berko (Deepsky) phoned me to ask reporting some faint bands now in Hungary, same like he had seen two days ago. I also see them, very faintly, but he has a better place to observe.

[markt]

Still a little light here in the UK for any confirmation, but will keep an eye out - clear skies at the mo...

[tmcewan]

ediacara said:

Erno Berko (Deepsky) phoned me to ask reporting some faint bands now in Hungary, same like he had seen two days ago. I also see them, very faintly, but he has a better place to observe.

Thanks for the info. Skies are clearing here now so will check carefully as the twilight deepens...

[Deepsky]

My photos at 19:36 and 20:21(UT):
img1.tar.hu/deepsky/img/31312226.jpg#3
img1.tar.hu/deepsky/img/31312246.jpg#3
(Sunset at 18:36)

Very faint NLC?

Erno

[mjuchert]

Hi Erno,

i had a look on your picture. I guess, this is a combination
of haze and dust due to the actual heat. I have observed
the same effect yesterday from Vienna/Austria.
It can also be observed by the influence of faint cirrus
clouds.

Clear skies
Matthias

[martinastro]

Seen this display from 23.10 - 01.00 UT A bright Veil with blue and white colour. It was a strong enhancement to the natural twilight. Veil only with no complex structure.

[tmcewan]

mjuchert said:

Hi Erno,

i had a look on your picture. I guess, this is a combination
of haze and dust due to the actual heat. I have observed
the same effect yesterday from Vienna/Austria.
It can also be observed by the influence of faint cirrus
clouds.

Clear skies
Matthias

It's never easy to tell from photographs but I too think this is haze producing a contrast effect across the twilight arch.

[tmcewan]

July 17-18 update: I had fine clear skies from 2215 UT through to around 0145 UT when bands of tropospheric cloud formed low to the north. Fog started to form at 0150 UT and observing became impossible by 0205 UT. I didn't see any NLC.

[Deepsky]

Thank you very much Yours replies!