Thematic Post Your Cloudscapes

**subsea** · 01-07-2020, 11:23 AM - **1 Like**

Rare clouds over Sun Lakes, AZ, in April of 2019. K-3II and HD DA 16-85mm lens.

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**subsea** · 01-07-2020, 11:31 AM - **1 Like**

More clouds over Sun Lakes, AZ.

**mattb123** · 01-07-2020, 11:46 AM - **6 Likes**

northcoastgreg · 01-07-2020, 03:45 PM - **5 Likes**

Originally posted by HoutHans

Wow, Greg, that is just a magnificent image. This works brilliantly in B&W.

Thanks. Black and white did save the image. Sometimes when working with old lenses in difficult lighting circumstances it can be difficult to get strong, natural colors, and black and white is best way to resolve the issue.

Here's a color image taken within around the same time of the other with the same old A 70-210/4 lens:

**savoche** · 01-08-2020, 10:28 AM - **8 Likes**

Deep breath... Lenticular type II polar stratospheric clouds.

Phew!

**paulh** · 01-08-2020, 11:03 AM - **4 Likes**

Originally posted by savoche

Lenticular type II polar stratospheric clouds.

Got it

Quite amazing.

From mid-November:

**noelcmn** · 01-08-2020, 11:25 AM - **2 Likes**

**savoche** · 01-08-2020, 12:56 PM

Originally posted by paulh

Got it

Quite amazing.

Yes, it is. I don't think I've seen such clouds more than once before. That is, at least not under the right conditions - on a predominantly clear sky just after sunset so that the sun hits them at just the right angle.

**savoche** · 01-08-2020, 01:01 PM - **6 Likes**

Taken a couple of days ago from the same window as the, umm, PSC above.

**noelcmn** · 01-08-2020, 01:08 PM - **5 Likes**

**ramseybuckeye** · 01-08-2020, 06:54 PM - **5 Likes**

**KC0PET** · 01-08-2020, 07:23 PM - **1 Like**

HoutHans · 01-09-2020, 12:03 AM - **1 Like**

Originally posted by savoche

Deep breath... Lenticular type II polar stratospheric clouds.

Phew!

Wow, in Dutch these are called parelmoerwolken, mother of pearl clouds, but a very nice capture of some special clouds. Thanks for sharing.

**savoche** · 01-09-2020, 01:51 AM - **1 Like**

Originally posted by HoutHans

Wow, in Dutch these are called parelmoerwolken, mother of pearl clouds, but a very nice capture of some special clouds. Thanks for sharing.

Same as in Norwegian, then; perlemorskyer

I got some more information about the conditions required for them to appear in my area. It can happen when there's fairly moist air in the mountains to our west combined with gale force winds from the west pushing the moist air into the stratosphere (at 10-50 km altitude) causing clouds of ice particles to form (-15 to -50°C). The wavy form comes from the wind being "shaped" by the mountains, sort of a blueprint of the mountains. In addition the weather must be clear at lower altitudes and the time of day must be right (with the sun between 1° and 6° below the horizon).

Benz3ne · 01-09-2020, 03:23 AM - **5 Likes**

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01-07-2020, 11:46 AM - 6 Likes	#3348
mattb123 Site Supporter Join Date: Apr 2010 Location: Colorado High Country Photos: Gallery Posts: 10,873

01-07-2020, 03:45 PM - 5 Likes	#3349
northcoastgreg Pentaxian Join Date: Feb 2010 Location: Northern Michigan Photos: Gallery \| Albums Posts: 6,175	Originally posted by HoutHans Wow, Greg, that is just a magnificent image. This works brilliantly in B&W. Thanks. Black and white did save the image. Sometimes when working with old lenses in difficult lighting circumstances it can be difficult to get strong, natural colors, and black and white is best way to resolve the issue. Here's a color image taken within around the same time of the other with the same old A 70-210/4 lens:

01-08-2020, 10:28 AM - 8 Likes	#3350
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Deep breath... Lenticular type II polar stratospheric clouds. Phew!

01-08-2020, 11:03 AM - 4 Likes	#3351
paulh Site Supporter Join Date: Sep 2010 Location: DFW Texas/Ventura County, CA Photos: Gallery \| Albums Posts: 33,306	Originally posted by savoche Lenticular type II polar stratospheric clouds. Got it Quite amazing. From mid-November:

01-08-2020, 11:25 AM - 2 Likes	#3352
noelcmn Site Supporter Join Date: Jul 2009 Location: South Africa-Johannesburg Photos: Gallery \| Albums Posts: 46,228

01-08-2020, 12:56 PM	#3353
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Originally posted by paulh Got it Quite amazing. Yes, it is. I don't think I've seen such clouds more than once before. That is, at least not under the right conditions - on a predominantly clear sky just after sunset so that the sun hits them at just the right angle.

01-08-2020, 01:01 PM - 6 Likes	#3354
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Taken a couple of days ago from the same window as the, umm, PSC above.

01-08-2020, 01:08 PM - 5 Likes	#3355
noelcmn Site Supporter Join Date: Jul 2009 Location: South Africa-Johannesburg Photos: Gallery \| Albums Posts: 46,228

01-08-2020, 06:54 PM - 5 Likes	#3356
ramseybuckeye Site Supporter Join Date: Apr 2009 Location: Hampstead, NC Photos: Gallery Posts: 17,295

01-08-2020, 07:23 PM - 1 Like	#3357
KC0PET Loyal Site Supporter Join Date: Oct 2015 Location: Central Missouri Photos: Gallery \| Albums Posts: 6,273

01-09-2020, 12:03 AM - 1 Like	#3358
HoutHans Pentaxian Join Date: Aug 2016 Location: Appingedam Photos: Gallery Posts: 3,123	Originally posted by savoche Deep breath... Lenticular type II polar stratospheric clouds. Phew! Wow, in Dutch these are called parelmoerwolken, mother of pearl clouds, but a very nice capture of some special clouds. Thanks for sharing.

01-09-2020, 01:51 AM - 1 Like	#3359
savoche Master of the obvious Join Date: Jun 2011 Location: Lowlands of Norway Posts: 18,311	Originally posted by HoutHans Wow, in Dutch these are called parelmoerwolken, mother of pearl clouds, but a very nice capture of some special clouds. Thanks for sharing. Same as in Norwegian, then; perlemorskyer I got some more information about the conditions required for them to appear in my area. It can happen when there's fairly moist air in the mountains to our west combined with gale force winds from the west pushing the moist air into the stratosphere (at 10-50 km altitude) causing clouds of ice particles to form (-15 to -50°C). The wavy form comes from the wind being "shaped" by the mountains, sort of a blueprint of the mountains. In addition the weather must be clear at lower altitudes and the time of day must be right (with the sun between 1° and 6° below the horizon).

01-09-2020, 03:23 AM - 5 Likes	#3360
Benz3ne Pentaxian Join Date: Jun 2019 Location: Cymru Posts: 2,356