Aircraft contrails........

[The Sage of Milton]

KLM743
Amsterdam-Lima
PH-BVD
30,000 ft
25th Dec 2014

Canon ESO550D+400mm IS


PH-BVD B77W 25DEC14.JPG

[The Sage of Milton]

TFL365
Amsterdam-Bonaire
PH-TFL
36,000 ft
25th Dec 2014

PH-TFL B788 25DEC14.JPG

[Mike Griffiths]

QTR714
IAH - DOH
A7-BAT
535knots/35000ft
24/12/24:



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[The Sage of Milton]

KLM765
Amsterdam-Aruba
PH-AKB
34,000ft
25 DEC 2014

Canon EOS550D + 400mm IS

PH-AKB A333 25DEC14.JPG

[Mike Griffiths]

UAE238
BOS - DXB
A6-ECN
590knots/33000ft
24/12/24:



1024px

[The Sage of Milton]

TOM740
Birmingham-Montego Bay
G-TUIE
38,000ft
24th Dec 2014

Canon EOS550D+400mm IS

G-TUIE B788 24DEC14.JPG

[The Sage of Milton]

KLM706
Rio de Janeiro - Amsterdam
PH-BQE
40,000 ft
24DEC14

Canon EOS550D + 100-400mm IS

PH-BQE B772 24DEC14.JPG

[Qwerty]

My Travel A330
@ FL380
Taken from B737-700 over northern Holland 26/04/2007
MyTravel_A330.jpg

[Mike Griffiths]

UAL976
IAD - DXB
N223UA
515knots/35000ft
20/12/14:



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[Stifflord]

19.12./15:26 NH223
JA784A All Nippon Airways / Boeing 777-381(ER) HND - FRA / Alt: 10363m / 34000ft

[Mike Griffiths]

The Sage of Milton and Mike, i guess you're both right, i'm paying attention to this detail next time.



It's been really hot here these days, so i guess i could have some atmospheric turbulence due to the heat. Lens distortion... i've got one hell of a vigneting on the image, but i'm avoiding that by cropping the image.

..try and get your shots with the aircraft flying right over you or as near as possible ie with your lens straight up or nearly so.

Atmospheric disturbance will then be less than with long distance angled shots and the image on your sensor will be bigger allowing you to crop a bigger image. The further away they are the poorer the image quality!

[Mike Griffiths]

UAE202
JFK - DXB
A6-EDE
560knots/37000ft
19/12/14:



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[Jonas Barros]

The Sage of Milton and Mike, i guess you're both right, i'm paying attention to this detail next time.

It looks to be more atmospheric /lens distortion as opposed to focus. Else the entire image would be out, but you can see the edges have tears. It may be the sensor of the camera or a little bit of movement in the mount.

You get similar shooting objects across a heat source in the foreground.

It's been really hot here these days, so i guess i could have some atmospheric turbulence due to the heat. Lens distortion... i've got one hell of a vigneting on the image, but i'm avoiding that by cropping the image.

[Mike Griffiths]

The obvious thing that I noticed was that many of the photos are of aircraft with no contrails, which seems strange as this is supposed to be a "contrail" thread. I've ceased posting anything for the time being because so many of my overflights have been non-trailing. Others may disagree, but posting non-contrail images on a contrail thread is, to me, akin to posting images of a Ford Cortina car on a site dedicated to the Austin Mini.

Rich (The Sage)

Sage - you are quite correct in your observation i.e. this is a aircraft contrail thread...

[The Sage of Milton]

Here are some of my newer pics using a canon t3i in prime focus with my telescope (900mm f/8)

The obvious thing that I noticed was that many of the photos are of aircraft with no contrails, which seems strange as this is supposed to be a "contrail" thread. I've ceased posting anything for the time being because so many of my overflights have been non-trailing. Others may disagree, but posting non-contrail images on a contrail thread is, to me, akin to posting images of a Ford Cortina car on a site dedicated to the Austin Mini.

Rich (The Sage)