Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

MASSIVE Magellan Telescope - More than TWICE as big as Keck - and 10x the resolution of Hubble ...

mirror making optics reflector observatory
  • Please log in to reply
18 replies to this topic

#1 cloudynebulas

cloudynebulas

    Lift Off

  • -----
  • topic starter
  • Posts: 14
  • Joined: 22 Sep 2019
  • Loc: San Diego, CA

Posted 08 October 2019 - 12:01 AM

Don't we live in exciting times? While the Keck Observatory's Twin Telescopes have mirrors that measure an astounding 10 meters (32.8 feet across), the Giant Magellan Telescope in Chili, with an updated 1st light target date of 2024 (per an Aug 2018 post), will be comprised of 7 mirrors that will collectively measure a massive 25.4 meters. And thanks to adaptive optics, the Magellan will resolve down to it's defraction limit giving it a resolution expected to be 10x that of the Hubble Space Telescope!

Here's a great video about the Magellan (that was posted previously on CloudyNights):
https://www.youtube....eature=youtu.be

 

And here's something new ...

 

Here's a copy (in PDF form) of the 208 page book: "Giant Magellan Telescope Science Book 2018" (it's excellent):
https://www.gmto.org...nceBook2018.pdf

 

Additional downloadable resources here:

https://www.gmto.org...ience_Book_2018

 

And if the Giant Magellan Telescope isn't "giant enough" for you - even bigger telescopes are on the way, including the next generation TMT: "Thirty Meter Telescope" currently under construction on Maunakea, Hawaii. It was bogged down in lawsuits but after going all the way to the Hawaii Supreme Court, they got their permit affirmed Oct 30, 2018 and the Hawaii Dept of Land & Natural Resources issued a Notice to Proceed June 20, 2019. Work began July 15, 2019 - with first light slated for July 20, 2027. More at: https://www.tmt.org/

 

We're about to discover MANY more ExoPlanets - and that may just be the tip of the iceberg.

 

Exciting times indeed!


Edited by cloudynebulas, 08 October 2019 - 01:07 AM.

  • Mitrovarr, turtle86, happylimpet and 4 others like this

#2 Sleep Deprived

Sleep Deprived

    Vostok 1

  • *****
  • Posts: 133
  • Joined: 17 Apr 2019
  • Loc: Seattle Area

Posted 08 October 2019 - 12:17 AM

Yes.  Exciting times we live in, indeed.

 

With the adaptive optics technology, we are probably limited in size by our imagination, or our finances.  Why not a 50-meter telescope @f/2?  We make large stadiums with movable roofs that are at least that large all the time.  Whatever sag occurs in the structure when going from 'horizon' to zenith can be corrected for using the adaptive optics.  I suppose another limiter would be the calculating speed/volume of the processors required to control all the variables.  Honestly, I would expect that isn't a problem.  One great thing about using adaptive optics is that the mirrors do not need to be thick at all.  How about 1,000 thin mirrors all controlled in real time?  Controlling 1,000-ish mirrors should be about as much of a technological challenge today as controlling 20-30 mirrors 10 years ago.  This could be incredibly light, thus reducing the overall moving weight.  We just need the will, and the $$$.  Oh yeah, and the mountaintop.  Oops, almost forgot:  and the imagination.


Edited by Sleep Deprived, 08 October 2019 - 12:18 AM.

  • Joe1950 and retroman2 like this

#3 Sully606

Sully606

    Explorer 1

  • -----
  • Posts: 68
  • Joined: 23 Jul 2019
  • Loc: Chicago, USA

Posted 08 October 2019 - 12:49 AM

Thanks for those links. Really interesting times indeed!

Sully
  • retroman2 likes this

#4 InkDark

InkDark

    Mercury-Atlas

  • -----
  • Posts: 2547
  • Joined: 29 Oct 2007
  • Loc: Province of Quebec, Canada

Posted 08 October 2019 - 08:18 AM

...and what about this monster!

 

https://en.wikipedia...Meter_Telescope

 

Nature exploration and thirst for knowledge is what sets us apart from other species, and in a good rare way.



#5 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 79415
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 08 October 2019 - 08:29 AM

And thanks to adaptive optics, the Magellan will resolve down to it's defraction limit giving it a resolution expected to be 10x that of the Hubble Space Telescope!

 

At what wave lengths over what field of view?

 

Jon



#6 SandyHouTex

SandyHouTex

    Skylab

  • *****
  • Posts: 4127
  • Joined: 02 Jun 2009
  • Loc: Houston, Texas, USA

Posted 08 October 2019 - 09:47 AM

The "Thirty Meter" telescope may never be built.  The protesters on Mauna Kea have shut construction down and are continuing.


  • Tyson M likes this

#7 checcocpb

checcocpb

    Sputnik

  • -----
  • Posts: 42
  • Joined: 29 Mar 2017

Posted 08 October 2019 - 09:50 AM

Don't forget the european ELT!

https://en.wikipedia...Large_Telescope

 

Cheers


  • cloudynebulas likes this

#8 MitchAlsup

MitchAlsup

    Soyuz

  • -----
  • Posts: 3981
  • Joined: 31 Aug 2009

Posted 08 October 2019 - 10:13 AM

You know, if we would take 1% of the military budget and direct it towards telescope facilities, these scopes would have been done a decade ago.


  • turtle86, Dynan and cloudynebulas like this

#9 SteveG

SteveG

    Cosmos

  • *****
  • Posts: 7844
  • Joined: 27 Sep 2006
  • Loc: Seattle, WA

Posted 08 October 2019 - 03:41 PM

I’m waiting for Elon Musk to come up with a telescope. He would call it the BFT.


  • drmark67 and Dynan like this

#10 Sleep Deprived

Sleep Deprived

    Vostok 1

  • *****
  • Posts: 133
  • Joined: 17 Apr 2019
  • Loc: Seattle Area

Posted 08 October 2019 - 03:52 PM

BFT = Big Falcon Telescope.

 

You know, like all his other BF stuff.


  • SteveG likes this

#11 cloudynebulas

cloudynebulas

    Lift Off

  • -----
  • topic starter
  • Posts: 14
  • Joined: 22 Sep 2019
  • Loc: San Diego, CA

Posted 08 October 2019 - 04:34 PM

The "Thirty Meter" telescope may never be built.  The protesters on Mauna Kea have shut construction down and are continuing.

Right you are. I see that. Here's some recent news on the protests and the project:

https://phys.org/new...i-protests.html


  • Jon Isaacs likes this

#12 Vla

Vla

    Viking 1

  • *****
  • Posts: 611
  • Joined: 08 Mar 2014

Posted 08 October 2019 - 08:03 PM

The 30m is Ritchey-Chretien, f/1 primary, f/15 system. This is what it looks like. Magellan is, I think, aplanatic Gregorian, so similar in performance.

Attached Thumbnails

  • 32m.png

  • Jon Isaacs likes this

#13 Keith Rivich

Keith Rivich

    Surveyor 1

  • *****
  • Posts: 1736
  • Joined: 17 Jun 2011
  • Loc: Cypress, Tx

Posted 08 October 2019 - 09:25 PM

I’m waiting for Elon Musk to come up with a telescope. He would call it the BFT.

The problem with Musk is he will build 12,000 little telescopes and stick them all over the sky!


  • Dynan likes this

#14 Tyson M

Tyson M

    Soyuz

  • *****
  • Posts: 3718
  • Joined: 22 Jan 2015
  • Loc: 53 degrees North

Posted 08 October 2019 - 10:31 PM

The "Thirty Meter" telescope may never be built.  The protesters on Mauna Kea have shut construction down and are continuing.

Agreed. The TMT team should just sue the Hawiian people/government the costs of lost time and construction materials and relocation fees. 



#15 25585

25585

    Fly Me to the Moon

  • *****
  • Posts: 5816
  • Joined: 29 Aug 2017
  • Loc: In a valley, in the UK.

Posted 11 October 2019 - 12:46 PM

China will build the largest, just wait. The FAST radio scope is now the largest single dish, pushing Arecibo to 2nd place.     https://www.universe...ly-operational/



#16 davidpitre

davidpitre

    Skylab

  • *****
  • Posts: 4391
  • Joined: 10 May 2005
  • Loc: Central Texas

Posted 11 October 2019 - 06:04 PM

Agreed. The TMT team should just sue the Hawiian people/government the costs of lost time and construction materials and relocation fees.

...or they could learn a lesson and do their homework.
  • Jon Isaacs, John Lightholder and 25585 like this

#17 TareqPhoto

TareqPhoto

    Aurora

  • -----
  • Posts: 4584
  • Joined: 20 Feb 2017
  • Loc: Ajman - UAE

Posted 28 October 2019 - 05:27 AM

Let's wait few millions or billions years when the universe is gonna collapse so all targets will come towards us or targets getting closer to each other, that time I think I can see Andromeda galaxy and Neptune with my naked eyes very clear in full details who need some tenths meters scopes



#18 InkDark

InkDark

    Mercury-Atlas

  • -----
  • Posts: 2547
  • Joined: 29 Oct 2007
  • Loc: Province of Quebec, Canada

Posted 28 October 2019 - 01:30 PM

Let's wait few millions or billions years ...

You got to tell us what you are having for breakfast! 



#19 TareqPhoto

TareqPhoto

    Aurora

  • -----
  • Posts: 4584
  • Joined: 20 Feb 2017
  • Loc: Ajman - UAE

Posted 28 October 2019 - 01:33 PM

You got to tell us what you are having for breakfast! 

In those millions/billions years? lol.gif




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics





Also tagged with one or more of these keywords: mirror making, optics, reflector, observatory



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics