APOD: Gemini Observatory North (2016 Oct 15)

Comments and questions about the APOD on the main view screen.
User avatar
APOD Robot
Otto Posterman
Posts: 4471
Joined: Fri Dec 04, 2009 3:27 am

APOD: Gemini Observatory North (2016 Oct 15)

Post by APOD Robot » Sat Oct 15, 2016 4:05 am

Image Gemini Observatory North

Explanation: It does look like a flying saucer, but this technologically advanced structure is not here to deliver the wise extraterrestrial from the scifi classic movie The Day the Earth Stood Still. It is here to advance our knowledge of the Universe though. Shown sitting near the top of a mountain in Hawaii, the dome of the Gemini Observatory North houses one of two identical 8.1-meter diameter telescopes. Used with its southern hemisphere twin observatory in Chile, the two can access the entire sky from planet Earth. Constructed from 85 exposures lasting 30 seconds each with camera fixed to a tripod, the image also clearly demonstrates that the Earth did not stand still. Adjusted to be slighter brighter at the ends of their arcs, the concentric star trails centered on the North Celestial Pole are a reflection of Earth's rotation around its axis. Close to the horizon at Hawaiian latitdues, Polaris, the North Star, makes the shortest star trail. The fainter denser forest of star trails toward the right are in the rising Milky Way.

<< Previous APOD This Day in APOD Next APOD >>
[/b]

Boomer12k
:---[===] *
Posts: 2691
Joined: Sun Apr 22, 2007 12:07 am

Re: APOD: Gemini Observatory North (2016 Oct 15)

Post by Boomer12k » Sat Oct 15, 2016 4:41 am

Oh, and here I thought it was like Futurama where The Universe moves, but the Ship stands still...

:---[===] *

Boomer12k
:---[===] *
Posts: 2691
Joined: Sun Apr 22, 2007 12:07 am

Re: APOD: Gemini Observatory North (2016 Oct 15)

Post by Boomer12k » Sat Oct 15, 2016 4:44 am

When I first saw this, the page showed only half the building... I thought "The Doctor" got a new T.A.R.D.I.S.....

We are into bad rain and wind storm with T-storm on Saturday....and high winds... won't be getting out the scope for quite a while... :(
:---[===] *

User avatar
Ann
4725 Å
Posts: 11634
Joined: Sat May 29, 2010 5:33 am

Re: APOD: Gemini Observatory North (2016 Oct 15)

Post by Ann » Sat Oct 15, 2016 5:27 am

Klaatu barada Gemini?
Click to play embedded YouTube video.
Ann
Color Commentator

ta152h0
Schooled
Posts: 1398
Joined: Mon Aug 29, 2005 12:46 am
Location: Auburn, Washington, USA

Re: APOD: Gemini Observatory North (2016 Oct 15)

Post by ta152h0 » Sun Oct 16, 2016 2:52 am

I remember prof Lewin challenging anyone to photograph a complete circle
Wolf Kotenberg