Space In General

Dennisch
Mine was Jupiter, as it easy to find for the last couple of months. I was jumping up and down like a kid on Christmas morning, and again the night I spotted Saturn, at 2.30 AM. :lol:

Tonight I went for a quickie with a Dslr and a 300mm lens. Just drove 5 minutes out of the city, setup the camera, and started shooting away. I haven't quite got the fine touch yet, but I captured 1 nebula, and 1 slightly out of focus green blob, must be a nebula too.

I learned that an Eos 400D and ISO 1600 doesn't work.




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Nice! Top one loos like M42 to me and the bottom one could be M27 that one can look very green.

My own version of them below.

M42

M42171112dss1glscaledecon_filteredfinishPF1.jpg


And M27

M27DSSGC.jpg


Little bit more than a DSLR used for those two but I think your shots are great considering how you took them. At the end of the day we are all looking up in wonder and that's is what is important 👍
 
PzR Slim
Nice! Top one loos like M42 to me and the bottom one could be M27 that one can look very green.

My own version of them below.
Click to expand...

Those are amazing. Absolutely stunning. Now I need a Dslr mount for the scope too. :lol:

But for now I will get a cheaper thing, I have a I think 750mm lens for a Slr camera, but I need an adapter ring to put it on the Dslr. I must be able to get some decent shots with that setup. And if I ever get in a crazy mood I will buy the Dslr mount for the scope, and rival your pics. :D
 
Dennisch
I have a I think 750mm lens for a Slr camera, but I need an adapter ring to put it on the Dslr. I must be able to get some decent shots with that setup. And if I ever get in a crazy mood I will buy the Dslr mount for the scope, and rival your pics. :D
Click to expand...

How much would you say it'd take to put together a 'budget' 750mm (or so) + DSLR mount etc., to be able to do these kind of shots?
 
Bye Ya
How much would you say it'd take to put together a 'budget' 750mm (or so) + DSLR mount etc., to be able to do these kind of shots?
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Well, I borrowed the Dslr from my sister, and the 750 I got for free, but it is an very old lens, without auto focus and such. But once you know how to focus properly that shouldn't be any issue. But, how much it would cost.. No idea. Look for second hand stuff, that is what I do usually. Except for the telescope, that, I bought new.
 
Wow, a 750mm for free? I've never looked into lenses of that range, but my guess would be that they aren't cheap. I'll have to look into it. Those shots are amazing.
 
The 750 lens is actually a 500mm. But still, it was free. :D
And I have some pictures of the moon.

This was the best one of my first series of shots :

img5332t.jpg


Realizing that I could not get the lens to focus properly I searched the web and found out that the lens had to be adjusted a bit. And so I did. I removed a small bolt that prevents it to focus beyond the infinity mark on the lens.

And this is the result.

img5334e.jpg


I am so happy right now, it already looks good, and I still have to take it back apart to clean the lenses. 👍
 
This seems like the right place to ask this question, could someone explain redshift and blueshift to me? I know it has something to do with the Doppler effect, but my knowledge ends there :(. Any helpers?
 
gokartman78
This seems like the right place to ask this question, could someone explain redshift and blueshift to me? I know it has something to do with the Doppler effect, but my knowledge ends there :(. Any helpers?
Click to expand...

Ok, so you have redshift which is what we see happens to very distant galaxies, they look red because the light coming from them has shifted to the red end of the spectrum (as red light has a longer wavelength than any other). It happens when an object is moving away from us.

Blueshift is just the opposite of redshift, if a distant star or galaxy moves closer to us (such as the Andromeda galaxy), we will see the colour shifting more towards the blue end of the spectrum.

The Doppler effect applies to both of these as it is just a change in wavelength due to the motion of an object.
 
I wouldn't say it has something to do with the Doppler effect; it is the Doppler effect, only with light instead of sound.

Let's say a white object is approaching you. Like a white car. As it approaches you you perceive the sound from it as having a higher pitch. After it's past you you hear it as a lower pitch. This is the Doppler effect. It would also acquire a bluish tinge. When it's moving away it would acquire a reddish tinge. The problem is that at non-relativistic speed you'd never notice the change. Sensitive enough equipment could detect the frequency change (AKA color shift) and from the amount of shift determine what the speed of the object is. This is how police radar works.
 
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cheers guys, I get it now :).
Just a random thought on the side, if the light rays from these galaxies are changing wavelengths, does that mean all other electromagnetic waves from those galaxies are changing their wavelength as well?
I'm thinking of this because at points in Earths orbit, we are getting closer to the sun, then further away (because it's and oval shaped orbit), and seeing as infrared waves are electromagnetic, they should have changing wavelengths with changing distance (from the Sun) so do we get a difference in the wavelength of infrared rays from our sun? And does this affect the temperature much here on Earth?
 
Dotini
Here is some sensational news of a possible rocket trip to Mars in only 30 days! This could revolutionize space travel by reducing the current Mars transit time of 8 months.

Interesting new physics and technology is involved, but more verification and testing is required.

http://www.nasa.gov/directorates/spacetech/niac/2012_phaseII_fellows_slough.html
http://cosmiclog.nbcnews.com/_news/...ion-rocket-technology-in-lab-and-aim-for-mars

Respectfully submitted,
Steve
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This is exactly why NASA should have a bigger budget than they do. And unfortunately it's been shrinking lately. :indiff:
 
gokartman78
cheers guys, I get it now :).
Just a random thought on the side, if the light rays from these galaxies are changing wavelengths, does that mean all other electromagnetic waves from those galaxies are changing their wavelength as well?
Click to expand...

Yep. Although to be pedantic, they're not changing wavelengths so much as we're perceiving them as having different wavelengths.

gokartman78
I'm thinking of this because at points in Earths orbit, we are getting closer to the sun, then further away (because it's and oval shaped orbit), and seeing as infrared waves are electromagnetic, they should have changing wavelengths with changing distance (from the Sun) so do we get a difference in the wavelength of infrared rays from our sun? And does this affect the temperature much here on Earth?
Click to expand...

Yep, they'd change, although the change is pretty insignificant; the speed being only a few hundred miles per hour on average. So no I wouldn't think it would have any significant effect.
 
R1600Turbo
This is exactly why NASA should have a bigger budget than they do. And unfortunately it's been shrinking lately. :indiff:
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Why should Nasa get a bigger budget? So they can continue to be the most inefficient spenders in engineering?

The US needs to subsidize private space companies. Let those brilliant scientists from NASA head on over to greener pastures. Nasa should just downsize themselves to robotics, logistical support, and museum work. JPL's the only great thing they have going.

And the SLS is cool and all, but it's first scheduled Moon-shot mission isn't till 2017, by then Obama's gonna be out and the new President's surely going to cancel it. That's why this whole system is doomed.

Clinton wants to build a massive international space station to act as a foothold toward further development of advanced orbiting space labs and colonies on the Moon. Bush neuters it to a fraction of what it was originally envisioned as. Bush wants to go to Mars, sets a timeline, Obama cancels that. Now Obama starts SLS, Nasa loses its bird in the process, starts losing money spinning its wheels, and then he randomly throws in the new goal of docking with an asteroid. Oh man, COME ON.
 
We wouldn't need the private companies if NASA had the budget to do what they need/want to do. And you just pointed out the main problem here, it's NOT NASA, it's the government. Jeeze, when are they not the problem?

Point is, NASA used to be great. It slowly died after the 60's when we actually had a president with a vision that got us somewhere in the space race. We need someone like that again.
 
Government's just a part of it, remember the contractors are able to charge whatever they want and gouge out NASA's budget and after all it's still the lowest bidder doing it. Private companies are able to build faster, cheaper, and safer because they can afford to spread out their support system and testing spending much less constricted.

If you gave NASA's multi billion dollar budget to Space X, we'd be on our way to Mars within a few years. NASA does not have a negligible budget, it's just that they have their hands tied and can't use their budget effectively.

This agency is a relic of the Cold War now. We only went to the Moon to beat Russia, it was all about national pride and competition. After that ended, there was no incentive for our government to keep up exploration at the rate it was going before.

Also, had Russia stayed powerful, prospered, and had more success in space, there's no telling where we may be right now.

But you and I know there's much more importance to exploring space than just being better than the next country. At this point, we need space, and we need to learn a lot more about it, and a lot faster, than we do now. It's in our interest to survive and flourish against the dangers space poses to us and to better support our rapid population growth.
 
There are two ways to get our government involved in space again.

1) There is some competitive reasons like Russia in the Cold War.
2) Military purposes.

If you have neither then the government really wont be interested in space.

Speaking of Space anyone play Kerbal Space Program? The game is a great sim about rockets and stuff. It's great fun if you are in to the kind of thing!
 
I used to play Moon Lander on my old TI SR-56. Does that count?

For that matter, does anyone even remember what an SR-56 was?
 
I have a lot of respect for commercial space and specially the 'new space' companies, with SpaceX as their frontman. They do however rely heavily on NASA's expertise and facilities and would not be even close to their current state of progress without oversight from the Government. Crediting them for their progress while downplaying NASA in the process is a bit unfair to say the least.
 
NASA Facebook Page
Stunning new image of Horsehead Nebula from Hubble
This new Hubble image, captured and released to celebrate the telescope’s 23rd year in orbit, shows part of the sky in the constellation of Orion (The Hunter). Rising like a giant seahorse from turbulent waves of dust and gas is the Horsehead Nebula, otherwise known as Barnard 33.

This image shows the region in infrared light, which has longer wavelengths than visible light and can pierce through the dusty material that usually obscures the nebula’s inner regions. The result is a rather ethereal and fragile-looking structure, made of delicate folds of gas — very different to the nebula’s appearance in visible light.
Click to expand...
http://www.spacetelescope.org/images/heic1307a/

68534_10151568051651772_404615560_n.jpg
 
Looks more like an Asian-style dragon to me.
 

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