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Based on your comments, I've made some modifications to the background and
lighting.
Post a reply to this message
Attachments:
Download 'spsh01-4.png' (1128 KB)
Preview of image 'spsh01-4.png'
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On 02.08.2015 3:38, BayashiPascal wrote:
> The background is a image map of the milky way. I have no idea how bright it may
> be viewed from space. I'll see how the image looks if I make it dimmer.
Sadly you would not see the Milkyway and likely also no stars except
maybe 3 or 4 of the brightest when your eye (or camera settings) are
adapted to the brightness of Neptune in field of view. That is why
you don't usually see stars in space photos of ISS or Earth.
However, you could create a HDR image from space combining long
and short exposures that might look similar to your image, so you
have room for artistic license :)
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Christian Froeschlin <chr### [at] chrfr de> wrote:
> On 02.08.2015 3:38, BayashiPascal wrote:
>
> > The background is a image map of the milky way. I have no idea how bright it may
> > be viewed from space. I'll see how the image looks if I make it dimmer.
>
> Sadly you would not see the Milkyway and likely also no stars except
> maybe 3 or 4 of the brightest when your eye (or camera settings) are
> adapted to the brightness of Neptune in field of view. That is why
> you don't usually see stars in space photos of ISS or Earth.
>
> However, you could create a HDR image from space combining long
> and short exposures that might look similar to your image, so you
> have room for artistic license :)
Thanks for your comment.
Then I'll invoke my artistic license, because I love the image as it is, and
because I want to move on other projects ;-)
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> On 02.08.2015 3:38, BayashiPascal wrote:
>
>> The background is a image map of the milky way. I have no idea how
>> bright it may
>> be viewed from space. I'll see how the image looks if I make it dimmer.
>
> Sadly you would not see the Milkyway and likely also no stars except
> maybe 3 or 4 of the brightest when your eye (or camera settings) are
> adapted to the brightness of Neptune in field of view. That is why
> you don't usually see stars in space photos of ISS or Earth.
>
> However, you could create a HDR image from space combining long
> and short exposures that might look similar to your image, so you
> have room for artistic license :)
>
Given it's distance from the Sun, 30.1 UA, it receive very little light.
It amount to 1/906 what you get from earth, and it's surface is 14.98
that of the Earth.
One UA been the average distance from the Sun to the Earth.
It thus receive 0.0165 times the light received by the Earth over it's
whole surface.
It's albedo is 0.29, compared to 0.367 for the Earth, making it darker.
It's total surface illuminate as 0.013065 (1.3%) Earth.
So, you'll probably see most of the stars down to a magnitude around 8.
Alain
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"BayashiPascal" <Pas### [at] BayashiInJapannet> wrote:
> Based on your comments, I've made some modifications to the background and
> lighting.
May be it is not photorealistic, but it is a very nice image. Photorealism is a
goal one can aim at but with computer graphics one can make a lot of very nice
images which are not photorealistic. You are still free of the limitations of a
physical camera and of gravity or other natural forces. The image and it's
reception counts at last and I like this one.
Best regards,
Michael
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On 11.08.2015 21:45, Alain wrote:
> It's total surface illuminate as 0.013065 (1.3%) Earth.
True, but that is still relatively bright. Consider that
even on Pluto, daylight is comparable to dusk on Earth, see
http://www.skyandtelescope.com/astronomy-news/pluto-time-061620155/
Compared to this level you could still only see very bright stars.
Of course, in space you could simply block the glare of Neptune
with your hand to reveal the stars, unlike an Earth-bound observer
inside the atmosphere at dusk.
Voyager 2 images of Neptune show no background stars either:
http://www.planetary.org/blogs/emily-lakdawalla/2013/05280840-lesser-known-views-of-uranus-neptune.html
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