File:Elongated contrail dissolving - 2021-12-10 (stitched image).jpg

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Captions

English

Aeroplane contrail, rapidly dissolving into contorted segments (composed of 9 images)

Summary edit

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Description	English: Aeroplane contrail stitched from 9 images taken within a period of 18 seconds over an arc of sky of approx. 60°. Flight direction from right to left. The contrail comprises two features (a) the rapidly rotating, thus increasingly contorted, almost pure white segments and (b) a background of rising and rotating wisps just above. Only at 100% resolution barely visible: the most recent wisps on the left and the oldest, almost completely evaporated contortions at right. Deutsch: Flugzeugspur aus 9 Einzelbildern, binnen 18 Sekunden über einen Himmelswinkel von geschätzt 60° aufgenommen. Flugrichtung von rechts nach links. Die Kondensspur umfasst zwei Hauptmerkmale: (a) die rasch rotierenden und somit zunehmend verwirbelnden, fast reinweiße Segmente und (b) eine Begleitfahne aus aufsteigenden und rotierenden Kondensfetzen knapp darüber. Nur bei 100% Auflösung schwach sichtbar: die zuletzt entstandenen Gebilde links und die ältesten, fast schon aufgelösten Verwirbelungen rechts.
Date	10 December 2021, 12:13:10
Source	Own work
Author	Franz van Duns

Camera location	51° 28′ 40.8″ N, 7° 33′ 18″ E	View this and other nearby images on: OpenStreetMap	51.478000; 7.555000

NOTE: This image is a panorama of an elongated aeroplane contrail consisting of 9 frames that were merged or stitched in Adobe Photoshop CC 23.0.2 (File ~ Automate ~ PhotoMerge). As a result, this image necessarily underwent some form of digital manipulation. These manipulations may include blending, blurring, cloning, and colour and perspective adjustments. As a result of these adjustments, the image content may be slightly different from reality at the points where multiple images were combined. This manipulation is often required due to lens, perspective, and parallax distortions.

Additional Information edit

en: Aeroplane contrail

Stitched from 9 images taken free-handed within a period of 18 seconds.
Covers an arc of sky of approx. 60°. The apex of this contrail tops out due south at approx. 70° above the horizon.
Flight direction from right to left, thus from southwest to southeast.
The aeroplane itself couldn't be included in this image series, as it had already disappeared behind a nearby tree.
This contrail dissolves into a series of whorls or vortexes, most remaining open until they ultimately dissolve. In some cases, closed loops may form.
See Wikipedia page about Crow instabilities.

See below for technical details concerning the "making of" this image.

de: Flugzeug-Kondensstreifen

Flugzeugspur aus 9 Einzelbildern, binnen 18 Sekunden freihand aufgenommen.
Umfasst einen Himmelswinkel von geschätzt 60°. Die höchste Stelle des Bogens zeigt exakt nach Süden und erreicht ca. 70° über dem Horizont.
Flugrichtung von rechts nach links, also von Südwest nach Südost.
Das Flugzeug ist in dieser Aufnahmeserie nicht enthalten, da es zum Zeitpunkt der Aufnahme bereits hinter einem nahen Baum verschwunden war.
Dieser Kondensstreifen zerfällt in eine lange Reihe Wirbel (Vortices), wobei die meisten offene Verschlingungen bilden bis zu ihrer Auflösung, manchmal jedoch entsteht ein geschlossener Ring.
Siehe Wikipedia Seite über Crow instabilities (keine deutsche Seite verfügbar).

Technische Daten zum Bild: siehe nachfolgende Beschreibung im englischer Sprache.

Technical Details / Making of this Image edit

[1] Camera: Sony Alpha 7RIII, 42 Mpixels, sensor size 7952x5304.
[2] Lens: Sony FE 200-600mm F5.6-6.3 G OSS.
[3] Scope: 9 images taken free-handed from left to right with camera in portrait position, overlapping by approx. 50%.
[4] Settings: Camera: ExposureProgram: MANUAL, ExposureMode: MANUAL, electronic shutter: YES, FocusMode: MANUAL, image stabilization: ON, FocalLength: 200mm, ISO 100, 1/2000s, aperture 7.1, bias (=exposure compensation) -2.00, WB (white balance) 5600K, colour space 'Adobe RGB', image stored both as JPG and 16-bit 'Adobe RGB' RAW (.ARW).
[5] ---
[6] Adobe Lightroom: (a) imported 16-bit 'Adobe RGB' RAW (.ARW) file (b) Preset 004 (Presence + Sharpening + NoiseRed + LensParamCorr) (c) Exposure: +0.00 (d) texture: +50, clarity. +30, vibrance: +10, saturation: +3 (e) Tone curve: 0>0, 53>29, 224>235, 255>255--- (f) exported as TIFF/16bit, retaining 'Adobe RGB' colour profile.
[7] ---
[8] Adobe Photoshop / panorama function 'PhotoMerge': (a) imported all 9 TIFF/16bit images; merging resulted in two separately stitched areas, one containing 3 and other 6 merged images. (b) merged these two areas on a new 16-bit RGB canvas, sized 50,000x9,000 pixels; applied suitable mask and colour adaptation at stitching interface. (c) tone curve NO (d) removed sensor specks (e) enhanced sharpness: NO (f) crop: precursors: full size: 42800x5700, mid size: 21400x2850, this image: 14980x1995 (export size limited by Adobe Photoshop) (g) exported as JPG max. quality file with embedded 'sRGB' colour profile.
[9] Arc of stitched image: approx. 60 degrees of sky.
[10] Wiki Commons categorisation: 'Category:Crow instabilities'.

Wiki Links edit

Wikipedia en: Crow instability, Contrail

Wikipedia de: Kein deutscher Wikipedia-Eintrag zum Begriff "Crow instability", Kondensstreifen

Licensing edit

I, the copyright holder of this work, hereby publish it under the following license:

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to remix – to adapt the work

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File history

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	22:04, 10 December 2021		14,980 × 1,995 (5.09 MB)	Franz van Duns (talk \| contribs)	Uploaded own work with UploadWizard

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File usage on Commons

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User:Franz van Duns

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Image title	Elongated contrail dissolving - 2021-12-10 (stitched image)
Camera manufacturer	SONY
Camera model	ILCE-7RM3
Author	Franz van Duns
Copyright holder	Franz van Duns
Exposure time	1/2,000 sec (0.0005)
F-number	f/7.1
ISO speed rating	100
Lens focal length	200 mm
User comments	[1] Camera: Sony Alpha 7RIII, 42 Mpixels, sensor size 7952x5304. [2] Lens: Sony FE 200-600mm F5.6-6.3 G OSS. [3] Scope: 9 images taken free-handed from left to right with camera in portrait position, overlapping by approx. 50%. [4] Settings: Camera: ExposureProgram: MANUAL, ExposureMode: MANUAL, electronic shutter: YES, FocusMode: MANUAL, image stabilization: ON, FocalLength: 200mm, ISO 100, 1/2000s, aperture 7.1, bias (=exposure compensation) -2.00, WB (white balance) 5600K, colour space 'Adobe RGB', image stored both as JPG and 16-bit 'Adobe RGB' RAW (.ARW). [5] --- [6] Adobe Lightroom: (a) imported 16-bit 'Adobe RGB' RAW (.ARW) file (b) Preset 004 (Presence + Sharpening + NoiseRed + LensParamCorr) (c) Exposure: +0.00 (d) texture: +50, clarity. +30, vibrance: +10, saturation: +3 (e) Tone curve: 0>0, 53>29, 224>235, 255>255--- (f) exported as TIFF/16bit, retaining 'Adobe RGB' colour profile. [7] --- [8] Adobe Photoshop / panorama function 'PhotoMerge': (a) imported all 9 TIFF/16bit images; merging resulted in two separately stitched areas, one containing 3 and other 6 merged images. (b) merged these two areas on a new 16-bit RGB canvas, sized 50,000x9,000 pixels; applied suitable mask and colour adaptation at stitching interface. (c) tone curve NO (d) removed sensor specks (e) enhanced sharpness: NO (f) crop: full size: 42800x5700, mid size: 21400x2850, export: 14980x1995 (export size limited by Adobe Photoshop) (g) exported as JPG max. quality file with embedded 'sRGB' colour profile. [9] Arc of stitched image: approx. 60 degrees of sky. [10] Wiki Commons categorisation: 'Category:Crow instabilities'.
Short title	Elongated contrail dissolving - 2021-12-10 (stitched image)
Date and time of data generation	13:13, 10 December 2021
JPEG file comment	Prepared for release to Wiki Commons with the help of 'ExifTool.exe'. Many thanks.
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	Adobe Lightroom Classic 11.0.1 (Win) / Adobe Photoshop 23.0.2 (Win)
Y and C positioning	Centered
Exif version	2.32
Meaning of each component	Y Cb Cr does not exist
APEX shutter speed	10.965784377017
APEX aperture	5.6556380823768
APEX brightness	10.91
APEX exposure bias	−2
Metering mode	Pattern
Supported Flashpix version	1
Color space	Uncalibrated
File source	Digital still camera
Exposure mode	Manual exposure
Focal length in 35 mm film	200 mm
Contrast	Normal
Saturation	Normal
Sharpness	Normal
Lens used	Sony FE 200-600mm F5.6-6.3 G OSS
Keywords	Elongated contrail dissolving - 2021-12-10 (stitched image)
IIM version	4