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Old 05-05-2018, 10:33 AM
JA
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W....I....D....E .......... Field

When your widefield just won't cut it, don't despair, ESA's got your back ....

1.7 Billion Stars in 360° !!!

Use the navigate button top left to move around in image. See Andromeda, LMC, SMC esp - pan mid-lower right



Screen Grab small excerpt attached

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Click for full-size image (W....I....D....E Field.jpg)
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  #2  
Old 06-05-2018, 11:51 AM
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Well JA, it sure is wide field, but it doesn't do much for me to be honest.
Thanks for posting though.

Leon
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Old 06-05-2018, 03:23 PM
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Well JA, it sure is wide field, but it doesn't do much for me to be honest.
Thanks for posting though.

Leon
Tough crowd around here

Thanks Leon

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Old 06-05-2018, 03:32 PM
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Most of the stars are so small it almost looks starless
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Old 08-05-2018, 04:06 PM
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This is actually amazing!
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Old 08-05-2018, 04:10 PM
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Shouldn't this be in General chat? I mean - no offence - you didn't take the images JA This forum is more about personal efforts.

It does look starless, and remarkably bland actually.
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Old 08-05-2018, 04:36 PM
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Quote:
Originally Posted by LewisM View Post
Shouldn't this be in General chat? I mean - no offence - you didn't take the images JA This forum is more about personal efforts.

It does look starless, and remarkably bland actually.
It could be in various areas - I remember thinking about where to post it at the time and decided here as appropriate as it was deep space and most relevant to the subject matter regardless of the author.
Glad you enjoyed it
No offence taken.

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Old 08-05-2018, 05:08 PM
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And none intended - afterall, you didn't create it, just posted it. I'll tell ESA directly
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Old 08-05-2018, 06:10 PM
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Originally Posted by LewisM View Post
And none intended - afterall, you didn't create it, just posted it. I'll tell ESA directly
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


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Last edited by JA; 08-05-2018 at 06:24 PM.
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  #10  
Old 08-05-2018, 08:26 PM
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Just saw this.
Moved it to General Chat.
Only work that is taken by the OP is allowed in the Deep Space, Solar and Terrestrial sections.

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RB
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  #11  
Old 08-05-2018, 09:45 PM
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Apologies.

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Old 08-05-2018, 10:24 PM
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Old 10-05-2018, 08:23 AM
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Quote:
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Most of the stars are so small it almost looks starless
All I see is compression artifacts. And oddly I now have a craving for a kransky sausage.
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Old 11-05-2018, 10:38 PM
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I was able to open the 800MB version linked by JA:
http://sci.esa.int/science-e-media/i...an_40kx20k.png

in IrfanView:

https://www.irfanview.com/

Cheers
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  #15  
Old 11-05-2018, 10:58 PM
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^Thankyou Andrew I will have to try infranview. How did you find the 800MB image?

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  #16  
Old 11-05-2018, 11:02 PM
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Quote:
Originally Posted by JA View Post
^Thankyou Andrew I will have to try infranview. How did you find the 800MB image?

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For a good 20 seconds there I thought you were asking how I managed to find it (as opposed to "how is it?") which threw me given that you were the one who linked it!

Anyway, it's quite amazing, ... although if you zoom in too far it does start to become a bit of a wash of endless stars, but LMC is quite stunning. Actually I enjoyed the zoomed out view the most (probably making the 800MB a little redundant!) but all in all very nice.

Thanks for posting it!
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