Comments on: From Here To Infinity

By: Infinite123Lifer

Infinite123Lifer — Wed, 24 Oct 2012 20:19:50 +0000

To infinity? Well, at least you didn’t go beyond

By: From Here To Infinity | Bad Astronomy | Discover Magazine | The Universe Around Us | Scoop.it

Wed, 24 Oct 2012 01:07:34 +0000

[...] Astronomy | Detlef Hartmann | Looking up into the night sky, it seems like you can see forever. [...]

By: Messier Tidy Upper

Messier Tidy Upper — Tue, 23 Oct 2012 11:58:59 +0000

That. is . Breath-takingly. Impressive! :-0

Superluminous (beyond merely brilliant)work Detlef Hartmann thanks and cheers BA for sharing this. 8)

By: From Here To Infinity | Bad Astronomy | Discover Magazine | Planets, Stars, rockets and Space | Scoop.it

Tue, 23 Oct 2012 10:46:35 +0000

[...] Astronomy | Detlef Hartmann | Looking up into the night sky, it seems like you can see forever. [...]

By: Joseph G

Joseph G — Tue, 23 Oct 2012 08:50:44 +0000

@18 Jon Hanford: To be fair, those appear to only correct for tip and tilt (as opposed to aberrations like astigmatism or defocusing). They’re quite impressive all the same, I mean – that one paper makes a very good case that that’s pretty much all you need for planetary observation.
Still, when I think of adaptive optics, I think of mirrors being deformed with actuators, laser guide stars, fancy stuff like that

By: Jon Hanford

Jon Hanford — Tue, 23 Oct 2012 03:11:51 +0000

Chris (14),

“I wonder how long it’ll be before an “amateur” puts adaptive optics on their telescope.”

AO have been available to amateurs for years. Here’s a 1999 paper on AO for amateurs: http://www.sciencedirect.com/science/article/pii/S0022460X9992285X

Some commercial AO systems for amateurs:

http://www.telescope.com/Astrophotography/Astrophotography-Accessories/Orion-SteadyStar-Adaptive-Optics-Guider/pc/-1/c/4/sc/61/p/53076.uts (for guiding)

http://www.stellarproducts.com/ (for imaging)

More AO systems are available (hint: google adaptive optic for amateurs).

By: Cosmonut

Cosmonut — Tue, 23 Oct 2012 02:49:06 +0000

@15 Russell: Our view into the universe is limited by time rather than space.

While the Hubble deep field looks back about 10 billion light years, the most distant thing we can “see” is the cosmic microwave background radiation which is about 13.7 billion light years away.
I say “see” because all the light has been redshifted to microwave radiation.

This doesn’t mean that this is where the universe ends. If we could teleport to where the background radiation is coming from – we’d see a view very similar to our own with galaxies stretching for tens of billions of light years in all directions…

By: Joseph G

Joseph G — Tue, 23 Oct 2012 02:22:08 +0000

@#15 Russell: If we built an even larger Hubble Telescope and looked at that same bit of space would we peer back farther beyond what we see in this image? Is there more beyond this and we can’t see it? Or is that “it” “the end”, “fineto”, blahh…?

There IS more to see! That’s the hope for the James Webb Space Telescope, anyway. Besides having a mirror area much greater than that of the Hubble, it also operates in the infrared, meaning that it can see through gas and dust, as well as resolve visible and UV light that’s been red-shifted by extreme distance. Theoretically, yes, there is a maximum distance beyond which the expansion of the universe makes it impossible to see. We’re not quite there yet, but it’s hoped that the JWST will let us see just about that far

By: Russell

Russell — Mon, 22 Oct 2012 22:31:56 +0000

If we built an even larger Hubble Telescope and looked at that same bit of space would we peer back farther beyond what we see in this image? Is there more beyond this and we can’t see it? Or is that “it” “the end”, “fineto”, blahh…?

By: Chris

Chris — Mon, 22 Oct 2012 21:36:38 +0000

I wonder how long it’ll be before an “amateur” puts adaptive optics on their telescope.