Quote:
Originally Posted by silv
Hi Greg,
love the blue tone in it. And I'm very into the cirrus thingy since I read Dana's article she posted sometime this year. Perfect for small lenses and heaps of short exposures.Looking forward to how you progress your project very much.
I first looked at your picture from an angle at my MacbookPro and noticed weird patterns in the star field. Then I changed my viewing position and it was gone. Dirt on the screen? Something in my eyes? Clicked on your big version and saw the same in the same areas of the picture again. And then it vanished.
Stripes. Or an areal of a city from very high up, streets and housing blocks. And stripes again like loosely woven fabric, slightly irregular but a pattern that stands out.
I'll attach screenshots of some. The patterned stars are mostly visible in the upper half of the image.
The very small screenshot is not straight line but a curved line of stars which appears to be doubled up.
Like I said: it's there... and then it isn't. Only to appear again after having scanned a different part of the image and coming back to a particular area.
Does someone else notice that pattern?
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I just had a look at it again. I don't see that. What happens sometimes with high resolution large file images is it takes a while for it to display the full resolution image. It starts off with a lower resolution image and then if you wait a few seconds the higher resolution shows. Perhaps that is it?
I used Sequator to align and stack the images so unless its a little off in its aligning? As I say it looks OK on my monitor.
I could use PixInsight to align the images, that does quite a good job.
I have another longer exposure set and when boosted as well I see the same halo and also it picked up the tidal stream from the Small Magellanic Cloud.
I am going to take some flats tonight and reprocess this and finish the processing on the other stack.
Greg.