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Search found 5 matches
- Mon Jul 14, 2008 5:18 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Mars (+ Canals) (APOD 14 Jul 2008)
- Replies: 5
- Views: 3317
Mars (+ Canals) (APOD 14 Jul 2008)
Today's picture, Changes in Angular Mars - all images taken from Earth at the same magnification - reveals quite a lot of cobweb-like canals, especially in the third line of images. With today's CCD images, it's easier to understand how Lowell & the others got so carried away ![Smile :)](./images/smilies/icon_smile.gif)
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- Sun Feb 17, 2008 9:22 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Crab Neb (APOD 17 Feb 2008)
- Replies: 12
- Views: 5283
The nebula shines due to synchrotron radiation, the source of the particles being the pulsar wind. However, the exact mechanics of the situation have been a matter of debate. There's a paper discussing various models here: http://arxiv.org/PS_cache/astro-ph/pdf/0702/0702512v2.pdf It's a very express...
- Thu Jan 24, 2008 4:53 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Shelf Cloud (APOD 22 Jan 2008)
- Replies: 39
- Views: 20066
- Thu Jan 24, 2008 4:31 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Majestic Andromeda (APOD 24 Jan 2008)
- Replies: 8
- Views: 3103
Majestic Andromeda (APOD 24 Jan 2008)
I remember admiring the work of Tony Hallas & Daphne Mount in US astronomy magazines in the '80s & '90s. In those days they were using modestly sized but high quality apochromatic refractors & long exposures on hypered film. I notice on their website that these days they are "all di...
- Mon Jan 21, 2008 8:44 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Mercury's craters, size, MESSENGER, Vulcan (APOD 21 Jan 08)
- Replies: 22
- Views: 9936