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Posts Made By: Linton Rohr

August 8, 2012 11:01 PM Forum: N.A.S.A.

First 360-Degree Panorama From Curiosity

Posted By Linton Rohr

Remarkable image sets from NASA's Curiosity rover and Mars Reconnaissance Orbiter are continuing to develop the story of Curiosity's landing and first days on Mars.

The images from Curiosity's just-activated navigation cameras, or Navcams, include the rover's first self-portrait, looking down at its deck from above. Another Navcam image set, in lower-resolution thumbnails, is the first 360-degree view of Curiosity's new home in Gale Crater. Also downlinked were two, higher-resolution Navcams providing the most detailed depiction to date of the surface adjacent to the rover.

Images, and cont'd text here...
http://www.jpl.nasa.gov/news/news.cfm?release=2012-235
Some pretty cool pics! grin
Linton

September 26, 2012 06:51 AM Forum: N.A.S.A.

Hubble eXtreme Deep Field!

Posted By Linton Rohr

I finally changed out my desktop background. You'll see why. Amazing!
Numerous image sizes available to view. Mini version below.
Linton

http://hubblesite.org/newscenter/archive/releases/2012/37/

September 25, 2012: Like photographers assembling a portfolio of best shots, astronomers have assembled a new, improved portrait of mankind's deepest-ever view of the universe. Called the eXtreme Deep Field, or XDF, the photo was assembled by combining 10 years of NASA Hubble Space Telescope photographs taken of a patch of sky at the center of the original Hubble Ultra Deep Field. The XDF is a small fraction of the angular diameter of the full Moon. The Hubble Ultra Deep Field is an image of a small area of space in the constellation Fornax, created using Hubble Space Telescope data from 2003 and 2004. By collecting faint light over many hours of observation, it revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken at that time. The new full-color XDF image reaches much fainter galaxies and includes very deep exposures in red light from Hubble's new infrared camera, enabling new studies of the earliest galaxies in the universe. The XDF contains about 5,500 galaxies even within its smaller field of view. The faintest galaxies are one ten-billionth the brightness of what the human eye can see.


December 1, 2012 05:24 AM Forum: Landscape Photography

Our first snow of the year

Posted By Linton Rohr

Way back on October 12.
Having great weather here lately.
Let's get this forum going again folks! smile
From Torrey, Utah,
Linton

December 9, 2012 11:35 PM Forum: How to make AstroMart BETTER!! My idea is.....

Sir Patrick Moore - R.I.P.

Posted By Linton Rohr

British astronomer and broadcaster Sir Patrick Moore has died.

http://www.bbc.co.uk/news/uk-20657939

sad

December 10, 2012 01:33 AM Forum: ASTRONOMY

Sir Patrick Moore - R.I.P.

Posted By Linton Rohr

British astronomer and broadcaster Sir Patrick Moore has died.

http://www.bbc.co.uk/news/uk-20657939

sad


October 20, 2013 12:14 AM Forum: Telescope Making

World's largest amateur telescope

Posted By Linton Rohr

[SIZE="Large"]Utahn sets record by building world's largest amateur telescope
[/SIZE]
SALT LAKE CITY — A Utah man has set a record by building the world's largest amateur telescope, and he plans to travel the country to allow others to use it.

By day, Mike Clements drives a truck to Idaho and back. However, by night, he's preoccupied with something much less down-to-earth.

Clements is an amateur astronomer who, after years of planning, finished constructing the world's largest amateur telescope in September. The telescope is as long as a school bus, and weighs about 900 pounds. It also houses a mirror that is 70 inches wide.

"I still am in a state of disbelief," Clements said after completing his project. "I'm mad. I'm simply mad. It's something I had to do."

In 1988, a group of amateur astronomers named Group 70 attempted to build just such a telescope, but ran out of money, according to their website. Clements wears a souvenir Group 70 t-shirt given to him by a friend. It bears a large "1.8" to represent the 70-inch mirror.

The heart of Clements' telescope is a government surplus 70-inch mirror. It was produced originally for a Cold War-era spy satellite.

"It was designed for looking down and I guess reading license plates in Russia," he said.

Clements began began building a steel structure to house the mirror in 2012. He did it without formal training in telescope construction or welding and without any blueprints.

"He's got nothing on paper," said Clements' friend, Steve Dodds. "He did make a model out of popsicle sticks."
Dimensions of Telescope:

The telescope is as long as a school bus
Weighs about 900 pounds
Has a 70-inch mirror

Clements finished the telescope and in late September, he said he put a reflective coating on the mirror with a weed sprayer.

"It was grass roots from beginning to the end," he said.

"Mike is a very positive, 100 mph type guy," said his friend, Charlie Green. "He sets his goals and he jumps on things and you can see that in his telescope."

One cold fall night, Clements took his first real glimpses though the telescope. He said The Ring Nebula, a small blur in a normally-sized telescope, filled a large portion of his field of view. Clements said that conditions were not optimal due to heat waves radiating from the earth and distorting the view, but the sight was still impressive.

Clements plans to eventually buy a trailer and haul his telescope — designed to be disassembled — to parks to show people the night sky.

"I'm gonna take it around the country and show people," Clements said. "It's also portable. I don't know if I mentioned that."

Clements said years ago, he got the nickname "One-Meter Mike" when he built a large telescope with a diameter of one meter and hauled it around the country in the back of a pickup. He took it to national parks and rest stops and showed off the stars and planets.

Clements may be getting a new nickname with his latest project.

Video and news story here: http://www.ksl.com/?sid=27301024&nid=148&title=utahn-sets-record-by-building-worlds-largest-amateur-telescope&fm=home_page&s_cid=queue-3

Linton grin

January 16, 2014 03:39 AM Forum: ASTRONOMY

John Dobson...

Posted By Linton Rohr

... left this world this morning and is amongst the stars now.
He was 98. Rest in peace, brother!
linton

March 18, 2014 06:43 AM Forum: Landscape Photography

Sunrise over Capitol Reef, Utah

Posted By Linton Rohr

Haven't posted anything here for a long time. Looks like no one else has, either. wink
A nice sunrise ought to be an appropriate way to kick things off. grin
This one's from back in November...
Linton

March 22, 2014 10:57 PM Forum: Landscape Photography

Goblin Valley, Utah

Posted By Linton Rohr

Took a little trip over to Goblin Valley state park on New Year's Day.
We'd been by there quite a few times, but never had the time to stop. Nice way to start the year.
You may have heard about the bad behavior recently exhibited on you-tube by a (former) scoutmaster there. :S
Linton

March 25, 2014 07:52 PM Forum: Landscape Photography

Hot Air Balloon Festival in Bluff, Utah

Posted By Linton Rohr

I've always wanted to go see one of these and we finally got a chance back in late January.
About 25-30 balloons were on hand and they launched at sunrise, at nearby Valley of the Gods.
Quite an event! grin
Linton