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NLC's!

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NLC's! was created by martinastro

Hi all

Last night i got my very first display of Noctilucent clouds in 2006! My sister and i were walking in the country before dawn when at 02.45 we spotted a very faint, diffuse white glowing NLC formation very low near the horizon stretching from the N to NE sky through sections of Auriga, Perseus and Pisces. Type 1 brigntness and type 1 Veil like structure. The brightening dawn sky soon washed them out. I got my images up on the UK NLC homepage were i noticed that another observer from England also seen a possible display at night fall. Got 2 images at ISO200/5 sec exposure...



Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 3 days ago #28483

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Replied by dmcdona on topic Re: NLC's!

Martin - myself and Fiona were in Galway last weekend and on the Saturday night, about 11.20 to midnight, we looked to the north and the horizon line was a fairly bright silvery white with what looked like typical twilight colours above it. I *thought* it may have been noctilucent clouds but I wasn't sure. It could have been another atmospheric effect but it was definately brighter than I'd usually been accustomed to. What we saw was similar to your images but it more silvery/white.

Unfortunately, I had no camera with me... Any ideas? NLC's?

Cheers

Dave
16 years 3 days ago #28484

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Replied by voyager on topic Re: NLC's!

Martin - myself and Fiona were in Galway last weekend and on the Saturday night, about 11.20 to midnight, we looked to the north and the horizon line was a fairly bright silvery white with what looked like typical twilight colours above it. I *thought* it may have been noctilucent clouds but I wasn't sure. It could have been another atmospheric effect but it was definately brighter than I'd usually been accustomed to. What we saw was similar to your images but it more silvery/white.

Unfortunately, I had no camera with me... Any ideas? NLC's?

Cheers

Dave


For what it's worth it certainly sounds like NLCs to me!

BB
My Home Page - www.bartbusschots.ie
16 years 3 days ago #28485

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Replied by dave_lillis on topic Re: NLC's!

At the risk of getting shot, I have to say Martin that I dont see any noctilucent clouds in either of those images. i see normal dark clouds against the sky near the horizon.
To me it looks like a nice sunset well into the twilight with typical bright blue, white and yellow horizon hues.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 3 days ago #28488

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Replied by voyager on topic Re: NLC's!

So it's not just me who was not too sure about those images. The clouds are definitely not NLCs, the are not Luminescent .... I thought that perhaps the silvery band might be NLC and that the image just didn't show them very luminously.
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16 years 3 days ago #28489

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Replied by dave_lillis on topic Re: NLC's!

I thought that perhaps the silvery band might be NLC and that the image just didn't show them very luminously.


I've stared long as this part of the image, I just dont see what I'd expect NLC to look like, this looks like a blending of the sky.
Its possible that the image is too underexposed to pick up very faint NLCs, I just dont see them here.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 3 days ago #28490

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Replied by martinastro on topic Re: NLC's!

That sounds like NLC's Keith!!

Guys i know the images are difficult to go by but it was definitley NLCs, i know what NLCs look like and besides they would not have been featured on the UK NLC homepage by Tom if there was any doubt at all in his mind. I have been observing the sky at this hour every clear night and this morning it was VERY different, the NLCs were glowing! Even my sister noticed the unusual appearance of the sky....but they were faint and would have been missed by the untrained eye.
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 3 days ago #28491

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Replied by dave_lillis on topic Re: NLC's!

Are you saying that they were in the brightish white band ?
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 3 days ago #28492

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Replied by martinastro on topic Re: NLC's!

Yes but take into consideration that they were a diffuse Veil like band. Im 100% certain they are NLC's
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 3 days ago #28493

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Replied by martinastro on topic Re: NLC's!

Check out the UK NLC homepage here..

www.nlcnet.co.uk/nlcreps.htm

If you observe or image any NLCs then send them to this site.
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 3 days ago #28495

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Replied by dave_lillis on topic Re: NLC's!

Fair enough Martin, if you saw them, then you saw them, but I dont think your image does them justice.

The apparent image brightness on a LCD screen of a camera is often deceptive, I've taken images of the moon and they appear fine on the camera screen, its only when I see them on a PC screen do I see that the image is very underexposed.
Moral of the story, don't trust the camera screen for image brightness.
The NLC season is young yet Martin :)
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
+ 12"LX200, MK67, Meade2045, 4"refractor
16 years 3 days ago #28496

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Replied by martinastro on topic Re: NLC's!

Thats a very good point Dave. I to have this problem with my LCD screen so i end up with different images than what i believed i captured via pre viewing the LCD screen. I usually bracket these NLC displays anyway so when the next decent display appears i hope to get a more convincing image. The season is young indeed..happy hunting all
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 3 days ago #28502

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Replied by galwayskywatchers on topic Re: NLC's!

Hi all, what a wonderful clear night last night, I was out also in my back garden in south county Sligo till very late last night but did not see any NCL's. Did see a very fast moving satellite and an most unusual sight of one satellite passing in front of another.

Ronan Newman
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Galway AC
16 years 3 days ago #28503

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Replied by Seanie_Morris on topic Re: NLC's!

At the risk of getting shot, I have to say Martin that I dont see any noctilucent clouds in either of those images. i see normal dark clouds against the sky near the horizon.
To me it looks like a nice sunset well into the twilight with typical bright blue, white and yellow horizon hues.


At the risk of being hung, drawn and quartered next to Dave's bullet-riddled corpse, I have to agree! Martin, you do seem to have gotten a reverse Belt of Venus effect more than NLC, in my opinion.

But, Like Dave also says, your image does not do them justice if they are.
Midlands Astronomy Club.
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Former IFAS Chairperson and Secretary.
16 years 3 days ago #28508

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Replied by Conor on topic Re: NLC's!

Martin i do believe you saw them! But i cant them on your images :)
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16 years 3 days ago #28511

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Replied by martinastro on topic May 26th NLC's!

The sky was overcast last night but my instincts told me to get out of the house and go for a walk to the bottom of the country road to check the sky before retiring to bed - im glad i did because at 02.50 i seen a very bright Noctilucent cloud display only 3* above the northern horizon in the form of a brightly glowing white bar 15* long mostly obscured by clouds. This was a very bright display (type 4) and was clearily the most eye catching phenomena in the sky. At 03.05 it was covered by clouds so i only got a few not so good images. I got stopped by a car full of partygoers who lived nearby asking me what i was doing...they said i as mad lol. I spent the rest of the morning in a field waiting for the clouds to part but ended the session at 03.40. Type 1 or 0? structure. My 2nd display of the season. Im hoping these last 2 sightings are a sign of brighter displays to come. 2 observers from England last night also seen possible NLCs.. My images....





Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 1 day ago #28594

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Replied by albertw on topic Re: NLC's!

Merged. We don't need another NLC thread, 2 days after the last one started, to record personal observations...

I'm adding the Observing Reports guidelines into this groups rules also:

For the sake of clarity and tidiness in this thread, the Moderators would like posters to to bear in mind that too many threads spoil a good thing!

PLEASE KEEP EXISTING REPORTS ETC CONTAINED IN THE ONE THREAD.

If there are ongoing observations an any celestial event, please maintain it on one thread, rather than multiple threads. For example, a comet sighting can be maintained in perhaps 1 or 2 threads spanning a week, not 1 or 2 threads daily on the change of tail, brightness contrast etc.

While it is not in the rule book, it is simply a matter of consideration towards all users!


Thank you for your co-operation :-)
Albert White MSc FRAS
Chairperson, International Dark Sky Association - Irish Section
www.darksky.ie/
16 years 1 day ago #28595

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Replied by Conor on topic Re: NLC's!

Yes good idea! Im having problems trying to get this across aswell
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16 years 1 day ago #28596

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Replied by martinastro on topic Re: NLC's!

I dont think this is a good idea at all lol
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 1 day ago #28597

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Replied by martinastro on topic Re: NLC's!

www.nlcnet.co.uk/nlcreps.htm

Check the link to see the recent sightings. Tom from the Uk NLC homepage emailed me there and agrees that the NLC season has got of to a lively start which maybe an indication of bigger things to come. There have been possible sightings on the last 3 nights in a row! looks like the sunspot minimum theory could be correct?
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
16 years 1 day ago #28598

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Replied by martinastro on topic Re: NLC's!

eaas.proboards31.com/index.cgi?action=di...149105477&page=1

Check this link to see 2 images of a faint NLC display we seen from here last night.
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
15 years 11 months ago #29018

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Replied by Conor on topic Bagged my first NLC Display

Last night i bagged my first decent NLC display. It was very nice and was quite bright. I first spotted them at 12am and they were gone by 1:15am




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15 years 11 months ago #29079

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Replied by martinastro on topic Re: NLC's!

Great stuff Conor...thanks for the text!
Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
15 years 11 months ago #29117

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Replied by albertw on topic Re: NLC's!

Looks like twilight through clouds to me.
But anyway... merged into the existing NLC's thread.
Albert White MSc FRAS
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www.darksky.ie/
15 years 11 months ago #29118

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Replied by martinastro on topic Re: NLC's!

Thanks for the text Conor!

I caught them here at 00.30 BST located very low in the north only 5* above the horizon. The display was a vivid white type 2 band structure of type 2 brightness extending 15* long and partially obscured by dark clouds on its western flank. A nice display!..





Martin Mc Kenna

coruscations attending the whole length of the luminosity, giving to the phenomena the aspect of a wrathful messenger, and not that of a tranquil body pursuing a harmless course..comet of 1680
15 years 11 months ago #29124

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