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Amazing pic of Titan/Saturn

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TechBoyJK

Lifer
Oct 17, 2002
16,699
60
91
Saturn is not in the pic though...

You have Titan and Dione and Saturn's rings in the background.

I think Saturn is the biggest part of the picture.. you just can't see nearly the whole thing at all since Titan is the focus....
 

Bartman39

Elite Member | For Sale/Trade
Jul 4, 2000
8,867
51
91
Had found this one awhile back from "Cassini Saturn Mission"...
newrings_cassini_big.jpg


Kinda liked it for a desktop...:)
 

Jeff7

Lifer
Jan 4, 2001
41,596
20
81
I think Saturn is the biggest part of the picture.. you just can't see nearly the whole thing at all since Titan is the focus....
Yup. The entire background of the image is Saturn.



Mine is Uranus

jokes aside, is this a real picture, as seen by naked eye or some infrared, ultrasound or some crap like that?
It's natural color. Titan looks weird like that because of its thick, hazy atmosphere. (Denser than Earth's.)
The smaller moon is Dione. Yes, it really is that gray and colorless.




Nice pic, but since Nasa photoshops the sh!t out of their releases, I'm simply not impressed with this one.
Examples?

The one in the OP might have had some cleanups done to remove static from cosmic ray hits on the CCD, but other than that, they will radiometrically calibrate the images (multiple B&W images are taken through different color filters), and then combine them. This is very nearly true color.



Nice pic, but for ffs NASA needs to upload 30mb pics instead of craptacular resolution.
Many of their recent imagers are 1024x1024 resolution. Things like this are just single type shots, done with multiple filters for color, though they probably also capture additional images using wavelength filters beyond what we can see.
To get the huge images, they have to get a lot of pictures, which are then combined back on Earth. Just to get an approximate natural-color view, each image must be taken 3x, with the red, green, and blue filters. Some of the large collages require hundreds of snapshots. ("Image-to-image seams have been eliminated from the sky portion of the mosaic to better simulate the vista a person standing on Mars would see." That one's also approximate true-color - the red filter is a bit into the infrared.) And you want resolution? Here's the 65MB version.
This is what they'd look like without the seam removal. Oh well.



We need to send people to Titan. Forget Mars, Titan has water, that means we can create oxygen for settlements.
Yes, but it's quite literally hard as rocks here on Earth. And to get oxygen from water, you're going to need energy. Yes, Titan has an abundance of hydrocarbons, which you could burn for energy, if only you had some oxygen.
:hmm:
Brb, violating thermodynamics.


(Oh, and Mars does have water. It's also frozen.)
 
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TechBoyJK

Lifer
Oct 17, 2002
16,699
60
91
We need to send people to Titan. Forget Mars, Titan has water, that means we can create oxygen for settlements.

Titan DOES NOT have water, at least not liquid water. All the oceans and most of it's 'humidity' is liquid methane. It's wayyyyy cold there and methane acts like water at that temp.

It's not an environment we can survive without some gear! Some scientists have actually pitched the idea that because of it's dense atmosphere, and all the chemical activity, it might be significantly warmer on the surface than we imagine, and it could be highly possible that all we would need are space suits kind of like what the astronauts currently wear.
 

ichy

Diamond Member
Oct 5, 2006
6,940
8
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Re: NASA photoshopping pictures, nearly all astronomical pictures that are used for scientific work are in a format that wouldn't be worth looking at without some processing.

http://www.badastronomy.com/bad/misc/badhst.html

An aside here: when you see the images released from STScI on the news, or in a newspaper, or even on the net, you are not seeing the actual data but the data converted to an image readable by computers (like JPG or GIF images). These formats cannot convey the detailed information in the actual data, and so cannot be used scientifically; you need the actual data numbers to produce any kind of real science. As someone who has tried to produce a nice picture from data, trust me here; it's hard! It takes a lot of time and effort to get the color balance right, to highlight the features you want to see, and then to put it in a format that everyone can read.
 

ShadowOfMyself

Diamond Member
Jun 22, 2006
4,227
2
0
So thats saturn + rings in the background? Whats with the black part at the bottom?

Whole pic looks like a terrible photoshop though... The lightning is just weird
 

TechBoyJK

Lifer
Oct 17, 2002
16,699
60
91
Saturn is huge, and casts a huge shadow on the surrounding planetary bodies. If anything is going to mess with lighting, it's a huge ass planet in the background.
 

Jeff7

Lifer
Jan 4, 2001
41,596
20
81
So thats saturn + rings in the background? Whats with the black part at the bottom?

Whole pic looks like a terrible photoshop though... The lightning is just weird
That's the shadows cast by the rings. The horizontal gray line is the rings, seen nearly on-edge. They are very wide, but incredibly thin.

A different view.
The rings are the line across the middle of the image, and their shadow is visible on the planet.




Saturn is huge, and casts a huge shadow on the surrounding planetary bodies. If anything is going to mess with lighting, it's a huge ass planet in the background.
Though it will only cast a shadow on things behind it, relative to the Sun. ;)

It's a narrow-angle view, of an orange planet with multiple moons, one of which has a thick and hazy atmosphere, and giant rings. It's not going to look entirely normal to a lot of people. :)



Re: NASA photoshopping pictures, nearly all astronomical pictures that are used for scientific work are in a format that wouldn't be worth looking at without some processing.

http://www.badastronomy.com/bad/misc/badhst.html
An aside here: when you see the images released from STScI on the news, or in a newspaper, or even on the net, you are not seeing the actual data but the data converted to an image readable by computers (like JPG or GIF images). These formats cannot convey the detailed information in the actual data, and so cannot be used scientifically; you need the actual data numbers to produce any kind of real science. As someone who has tried to produce a nice picture from data, trust me here; it's hard! It takes a lot of time and effort to get the color balance right, to highlight the features you want to see, and then to put it in a format that everyone can read.
Some people went into conspiracy-mode when they'd work with the JPEGs from the Mars Exploration Rovers - OMG, The sky there is actually blue!!! NASA's doing a big coverup!
Yes, it certainly might turn out that way, if you don't use the calibration data sent with each raw image. How bright was the ambient light at the time? What was the exposure time? What aperture setting was used? If you just slam together the red-, green-, and blue-filter images, you're probably not going to end up with anything reasonable.
 
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TechBoyJK

Lifer
Oct 17, 2002
16,699
60
91
That's the shadows cast by the rings. The horizontal gray line is the rings, seen nearly on-edge. They are very wide, but incredibly thin.

A different view.
The rings are the line across the middle of the image, and their shadow is visible on the planet.





Though it will only cast a shadow on things behind it, relative to the Sun. ;)

It's a narrow-angle view, of an orange planet with multiple moons, one of which has a thick and hazy atmosphere, and giant rings. It's not going to look entirely normal to a lot of people. :)

I totally agree. My guess is that the sun is probably shining from the bottom left corner..
 

Locut0s

Lifer
Nov 28, 2001
22,205
44
91
another of titan

070202_titan_cloud_02.jpg


methane rain clouds

Titan-methane-rain.jpg

It's amazing how similar Titan is the earth. Only with temps own in the -200s and liquid methane replacing water.

But it rains, there are lakes, rivers, erosion and more.
 

phucheneh

Diamond Member
Jun 30, 2012
7,306
5
0
I simply don't think that one at the top can be a 'picture' as we generally know it. As in 'photograph.'

Reminds me of when they take a 'picture' of another galaxy or something...and it's like, okay...blurry infrared picture...invert colors...apply various filters...enhance...enhance...enhance...INCREDIBLE!

I mean, I see the scientific value, but not that 'stuff I find visually interesting' value.

I almost prefer good CGI.

PSA: If you havn't watched Wonders of the Solar System/Universe with Brian Cox (the physicist, not the fat guy that made Wolverine), you are a sillynancy.