Quote:
Originally Posted by LewisM
And none intended - afterall, you didn't create it, just posted it. I'll tell ESA directly
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OK go get 'em !
But in their defence, or atleast in relation to the image and video I posted as a link from youtube - We are looking at highly undersampled images. Not undersampled by their cameras or technique, but the medium: Youtube at 1080P or even 4K or my screen grab from youtube at 1080P.
Their original image is a mosaic
they say of 1 Gigapixel as a 360 degree view. They have a 40,000 x 20,000 pixel PNG image available for download, which unfortunately crashes for me. The next size down available is a 4,000 x 2,000 pixel image which shows more detail and tiny stars.
In the youtube video or the low resolution screen grab I attached the horizontal field of view is approximately 100 degrees, so with Youtube at 1920 x1080 and at max screen on a 1920x1080P monitor, that's a screen image scale of 187 arcsec/pixel. That will smooth out (read lose) a lot of stars. Even if you up it to 4K on Youtube (a benefit with a 4K screen, but somewhat better nonetheless) on a 4K screen ( 3840 x 2160) screen image scale improves somewhat to 94 arcsec/pixel, but will still hugely undersample and smear or hide detail otherwise present in the original image data.
Even though effectively the same as 4K video in resolution the 4000x2000 pixel JPG image gives some insight in to how spectacular the 40,000x20,000 might be even on our typically non-4K monitors because we can zoom in. Any way here's a link to the 8 Megapixel and 800 Megapixel images I just spoke of:
8 Megapixel JPG (It downloads OK for me)
http://sci.esa.int/science-e-media/i...tesian_360.jpg
800 Megapixel PNG(Not so much
, hopefully others have more luck.Mine is still trying!!!)
http://sci.esa.int/science-e-media/i...an_40kx20k.png
Best
JA