Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Astronomy Picture of the Day - Mostly Perseids
NASA ^ | 21 Aug, 2025 | Image Credit & Copyright: Klaus Pillwatsch

Posted on 08/21/2025 12:15:13 PM PDT by MtnClimber

Explanation: In this predawn skyscape recorded during the early morning hours of August 13, mostly Perseid meteors are raining down on planet Earth. You can easily identify the Perseid meteor streaks. They're the ones with trails that seem to converge on the annual meteor shower's radiant, a spot in the heroic constellation Perseus, located off the top of the frame. That's the direction in Earth's sky that looks along the orbit of this meteor shower's parent, periodic Comet Swift-Tuttle. Of course the scene is a composite, a combination of about 500 digital exposures to capture meteors registered with a single base frame exposure. But all exposures were taken during a period of around 2.5 hours from a wind farm near Mönchhof, Burgenland, Austria. Red lights on the individual wind turbine towers dot the foreground. In their spectacular close conjunction, bright planets Jupiter and Venus are poised above the eastern horizon.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; cometswifttuttle; meteors; nasa; perseids

Click here: to donate by Credit Card

Or here: to donate by PayPal

Or by mail to: Free Republic, LLC - PO Box 9771 - Fresno, CA 93794

Thank you very much and God bless you.

To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 08/21/2025 12:15:13 PM PDT by MtnClimber
[ Post Reply | Private Reply | View Replies]

To: MtnClimber

2 posted on 08/21/2025 12:15:32 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 08/21/2025 12:16:06 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

I find that driving through these wind farm areas at night is extremely disorienting.


4 posted on 08/21/2025 12:17:17 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Wow.


5 posted on 08/21/2025 12:48:46 PM PDT by No name given ( Anonymous is who you’ll know me as )
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

I don’t care for them much myself. Still, it’s a cool picture.


6 posted on 08/21/2025 1:54:52 PM PDT by telescope115 (Ad Astra, Ad Deum…)
[ Post Reply | Private Reply | To 4 | View Replies]

To: MtnClimber

“The 1833 Leonid meteor shower, a spectacular and intense event that occurred in North America on November 12, 1833, is widely regarded as the greatest meteor shower in US history, with an estimated rate of tens of thousands of meteors per hour.

“This event, where hundreds of thousands of meteors were observed in a single night, profoundly impacted those who witnessed it, leading to widespread fear and belief that the world was ending. It also sparked the first serious scientific study of meteor showers.”


7 posted on 08/21/2025 2:10:55 PM PDT by yefragetuwrabrumuy (If you see "Acheta" protein in a product, know that it has been adulterated with insect protein)
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

I saved the picture at the Nasa site then right clicked on it and went to Properties> Details tab.
Exposure time: 5028 sec <— 83.8 minutes
F-stop: 2.8
ISO: 1600


8 posted on 08/22/2025 1:38:16 AM PDT by minnesota_bound (Making money now. Still want much more.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: minnesota_bound

I wonder if this is a composite photo as the very long exposure would have the lights on the tower be overblown.


9 posted on 08/22/2025 1:39:57 AM PDT by minnesota_bound (Making money now. Still want much more.)
[ Post Reply | Private Reply | To 8 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson