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Astronomy Picture of the Day - ISS Transits Mars
APOD.NASA.gov ^ | 23 Jun, 2020 | Image Credit & Copyright: Tom Glenn

Posted on 09/23/2020 3:46:16 PM PDT by MtnClimber

Explanation: Yes, but have you ever seen the space station do this? If you know when and where to look, watching the bright International Space Station (ISS) drift across your night sky is a fascinating sight -- but not very unusual. Images of the ISS crossing in front of the half-degree Moon or Sun do exist, but are somewhat rare as they take planning, timing, and patience to acquire. Catching the ISS crossing in front of minuscule Mars, though, is on another level. Using online software, the featured photographer learned that the unusual transit would be visible only momentarily along a very narrow stretch of nearby land spanning just 90 meters. Within this stretch, the equivalent ground velocity of the passing ISS image would be a quick 7.4 kilometers per second. However, with a standard camera, a small telescope, an exact location to set up his equipment, an exact direction to point the telescope, and sub-millisecond timing -- he created a video from which the featured 0.00035 second exposure was extracted. In the resulting image capture, details on both Mars and the ISS are visible simultaneously. The featured image was acquired last Monday at 05:15:47 local time from just northeast of San Diego, California, USA. Although typically much smaller, angularly, than the ISS, Mars is approaching its maximum angular size in the next few weeks, because the blue planet (Earth) is set to pass its closest to the red planet (Mars) in their respective orbits around the Sun.

(Excerpt) Read more at apod.nasa.gov ...


TOPICS: Astronomy; Astronomy Picture of the Day
KEYWORDS: nasa
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To: blueunicorn6

Hahaha!!! Very funny. :)


21 posted on 09/23/2020 7:31:11 PM PDT by Redcitizen
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To: EEGator
I lived in Forked River years ago. I thought It was as Oyster Creek area that has the nuke plant?
22 posted on 09/23/2020 7:40:49 PM PDT by jmacusa (If we're all equal how is diversity our strength?)
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To: jmacusa

I think Oyster Creek is on the Forked River, right?

Exelon owns it, which is the parent company of the company I used to work for.


23 posted on 09/23/2020 7:45:30 PM PDT by EEGator
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To: jmacusa

Do you know what a Bortle map is? Bortle maps show that you live in extreme light pollution. You can barely see a handful of stars at your location.


24 posted on 09/23/2020 9:41:28 PM PDT by Kirkwood (Follow your Inner Trump)
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To: Kirkwood
Friend, my backyard faces due east. The Atlantic Ocean is all of just eight miles from my back door. Believe me. light pollution is really not a problem here.

On some nights with a new moon I can see one of the spiral arms of the Milky Way. And I can even see The Andromeda Galaxy with the naked eye.

25 posted on 09/24/2020 8:44:42 AM PDT by jmacusa (If we're all equal how is diversity our strength?)
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To: EEGator

Got it, up in the Kona Heavens area. Surprised it was not clouded over. North of the town light pollution though and above surface haze.

When we used to go to dinner up north more often, I enjoyed pulling off at the veterans cemetery gate and waiting for eyes to adapt.


26 posted on 09/24/2020 11:08:29 AM PDT by doorgunner69 (Peace is that brief glorious moment in history when everybody stands around reloading - T Jefferson)
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To: doorgunner69

I’ve driven by there many, many times.

Philly is just a little bit different...


27 posted on 09/24/2020 11:42:45 AM PDT by EEGator
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