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DPChallenge Forums >> General Discussion >> The Ongoing Astronomy Thread.
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Showing posts 126 - 150 of 357, (reverse)
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12/02/2013 11:20:14 PM · #126
Possible meteorite strike?
Fox News Article
12/07/2013 01:28:13 AM · #127
The sky has finally cleared up here, so I was able to snag a couple of shots of the ISS coming over the horizon, and passing between the Moon and Venus.
12/25/2013 02:21:29 PM · #128
Earthrise Revisited

Originally posted by Linked Article:

On December 24, 1968, Apollo 8 astronauts Frank Borman, James Lovell, and William Anders were coming around from the far side of the Moon on their fourth orbit. Borman began to roll the spacecraft, and as he did, the Earth rose into view over the Moon’s limb. Anders, photographing the Moon from the right side window, caught sight of the view, and exclaimed: “Oh my God, look at that picture over there! There’s the Earth comin’ up. Wow, is that pretty!”

He snapped a black and white photo (top), capturing humanity’s first view of Earth from another planetary body.

... a second camera mounted to the front-facing window continued to photograph the Moon every 20 seconds on an automatic timer. By matching that series of photographs to a high resolution model of the lunar terrain as observed by the Lunar Reconnaissance Orbiter (LRO), NASA scientists and visualizers have now identified exactly when the Apollo spacecraft turned and where and when each Earthrise photograph was taken. This allowed them to re-create the Earthrise experience in a new video.

The second image above is a still from that re-created Earthrise. ... This high-fidelity re-creation shows the rising Earth as it must have looked to Anders, Borman, and Lovell 45 years ago.
01/31/2014 02:10:57 PM · #129
The Coldest Spot in the Known Universe ... not really any photo-ops, but pretty interesting.
01/31/2014 02:40:30 PM · #130
Did I read that Mercury was supposed to be visible this weekend?
01/31/2014 10:02:08 PM · #131
Originally posted by bvy:

Did I read that Mercury was supposed to be visible this weekend?


info here
02/03/2014 05:20:40 PM · #132
Missed it. Damn clouds. But I did glimpse a beautiful crescent moon cradling Venus last week...
02/08/2014 12:09:27 PM · #133
Drought in California

Originally posted by Linked Article:

The change in scenery is so striking, a group of high school science students in central California have been flying high altitude balloons to photograph it.  From the stratosphere, their home town of Bishop looks like a settlement on the planet Mars: image, movie
02/08/2014 04:03:51 PM · #134
That was a good video. Thanks.
I snagged a few shots of the ISS docked with a Progress supply vehicle last week. It passed right in front of the moon, but I missed that because the tripod was too short for me to get down low enough to see in the viewfinder to get the shot. With the 500 and crop frame D7000, the ISS was moving across the whole frame within about 7 or 8 seconds, so getting zeroed in and focusing had to be done rapidly.
This was done with a 500mm mirror lens, and is near full res, but cropped a lot.
02/18/2014 08:06:20 AM · #135
Lunar Eclipse Thread
03/03/2014 10:48:39 PM · #136
You can now vote for your favorite image(s) in Earth Onservatory's Second Annual "Tournament Earth" ...
03/07/2014 12:54:28 PM · #137
A Telescope Bigger than a Galaxy
03/08/2014 05:17:25 PM · #138
This week is the 60th anniversary of the US H-Bomb test at Bikini Atoll ... the 1.2km diameter crater shown in this satellite photo was the result.
03/14/2014 04:27:45 PM · #139
Mars will be coming to opposition in April, right now it's about 5 degrees northeast of Spica. It's not a very close approach but I'm going to try and have a look. Hopefully the atmosphere will be steady and not look like I'm trying to view from the bottom of a swimming pool...
03/14/2014 11:21:09 PM · #140
Thanks for the Mars update.
Space X will be launching a supply mission to the ISS Mar 30, for anyone in mid Florida who might be interested in seeing or photographing the launch.
NASA launch schedule.

It was bumped to the 30th this evening, from the planned launch Sunday morning to allow more "tinker time".
03/31/2014 03:58:15 PM · #141
Space Tourism Provides A Balloon to the Ends of the Earth
Originally posted by Linked Program Summary:

Space might be closer than you think. By the end of 2016, a private company, World View, plans to bring tourists to the brink of outer space in a high-altitude balloon.

Just shy of the height reached by daredevil Felix Baumgartner, who jumped out of a craft in 2012 that was stationed at the edge of space and just 24 miles above Earth, passengers will be able to travel 19 miles above the ground to see the curvature of the Earth and the blackness of space all for the cost of just $75,000.

"Just" ...
04/07/2014 02:41:00 PM · #142
Skydiver Captures Rare Meteorite on Camera as It Nearly Hits Him
04/29/2014 11:13:09 PM · #143
In honor of National Park Week here are satellite images of 12 National Parks.
05/20/2014 01:04:37 PM · #144
Craft & Vision has a new book on night photography on sale through Monday.
07/11/2014 05:22:34 PM · #145
Three consecutive Perigee Moons starting tomorrow ...
07/11/2014 05:35:58 PM · #146
thanks for Sharing General. Not sure if many of you have done this yet or not, but a few years back I wanted to verify for myself what all the hype was about the "super moon". this photo was taken with Canon 20D and sigman 50-500 @ 500mm. 2 separate images, taken a few hours apart on the same night. one closer to the horizon when it looked ginormous, then one several hours later on when it was much higher in the sky. I then combined the images to see the difference.

07/11/2014 06:28:23 PM · #147
Originally posted by jab119:

thanks for Sharing General. Not sure if many of you have done this yet or not, but a few years back I wanted to verify for myself what all the hype was about the "super moon". this photo was taken with Canon 20D and sigman 50-500 @ 500mm. 2 separate images, taken a few hours apart on the same night. one closer to the horizon when it looked ginormous, then one several hours later on when it was much higher in the sky. I then combined the images to see the difference.



I do not understand. Your results do not make sense to me. The two should be the same in my view and I'm interested why it isn't.
07/11/2014 08:10:52 PM · #148
Originally posted by DrAchoo:

I do not understand. Your results do not make sense to me. The two should be the same in my view and I'm interested why it isn't.

Atmospheric magnification. Near the horizon the light has to pass through a LOT more atmosphere to reach us than it does from directly overhead.
07/11/2014 08:52:34 PM · #149
Summer Moon Illusion (2007 NASA article)

Moon Illusion Explained (one version, anyway)
07/12/2014 02:08:50 AM · #150
Paul's link would disagree with Bear and doesn't answer the camera discrepancy.

"Sky watchers have known for thousands of years that low-hanging moons look unnaturally big. Cameras don't see it, but human eyes do; it's a genuine illusion."

Without looking up links I feel the atmospheric magnification theory has been shown to be wrong.
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