© Tom Cooper
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GROUPS: I no longer join groups that do not have either strict photo count limits or very narrow subjects. Former ID: AustinMN Equipment: Sony NEX-6; before that Fuji FinePix S2000HD; before that Nikon CoolPix 3100; before that Minolta X-700 & X-500; before that Minolta SRT-201.

© Tom Cooper's conversations

Thank you Tom for your very careful analysis which made me go investigate this.

First the short plane bottom right occurs right at the beginning and is heading down below the horizon and is two 30 second frames.

Now the big controversial light trail.......

This is one aircraft flying away from the camera AND left to right. The entire left half of the trail.... that is; left of frame to north star is one 30 second exposure. The right hand half of the shot consists of 4 x 30 second exposures and here the plane is flying further away from the camera, so the gap between light flashes (because that what we are looking at here) are smaller and smaller... so the flashes are closer together.

When I exported the shots from RAW to JPG for stacking I applied lens adjustment equally to each one..... BUT Its not beyond the realm of possibility that there is some curvature distortion here and the North Star just happens to appear dead center (ish).

Finally..... the clouds are actually clouds and not contrails. They are little fluffy blobs that are slow moving from left to right (like the big plane).

I'll post a composite proof on G+ in a few minutes. You know where I live :-)

Many many thanks for giving me something to do whilst on bear-watch. Its like Baywatch but only involves a bird feeder.


Sounds like some politicians I know.

You can just imagine him licking his lips :-)

Gv_AN, I have selected this as the new avatar for the POTD - Photo of the Day group. I thank you for participating in this group!

Johann50, I just want to give a polite reminder that the group POTD - Photo of the Day only allows one photo each day.

cristianoprz, I just want to give a polite reminder that the group POTD - Photo of the Day only allows one photo each day.

Beautiful shot !! L+F Greetings. DOM

So.... what you think Tom? Are you happy with this, I would be. The North Star is nice and visible.

I'd say about 15 shots stacked.

There are three or four astro shots on this page of mine if your interested in ideas to develop this theme.

I think you chose exactly the right season. The shadows are a splendid element in this photo. The wide format works fine too.

excellent view and landscape! wonderful photo!

Like 1.

greetings, tomas from toronto

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