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Thursday, February 12, 2009
Supernova Remnant, YouTube video, and Zelinda
The Crab Nebula, a supernova remnant was added to Milky Way page. It's 10 LY in size and a very turbulent region
of space. I'm glad it's far away!!
How can you not like a minor planet named Zelinda? Check her (it) out on the minor planet page.
Sunday, February 8, 2009
Near-Earth Asteroid and Comet Lulin
There are objects whizzing by us all the time. The minor planets page has an asteroid discovered in 2006 that will
only miss Earth by a tiny margin (astronomically speaking). But it's still way too far away for danger (2 million miles
away). Another Near-Earth asteroid discovered this year only missed Earth by about 100,000 miles on February
2nd. We get pummelled all the time by tiny objects but thankfully the bigger ones have been missing us.
Comel Lulin is the brightest comet predicted for this winter. See the Comet page for a picture (as with my
more popular targets - better pics are on the web). These were 16.3s shots but I should have collected more blue data.
I used the light pollution to cut out sky glow a bit. The comet moved in between the 4 sets of shots I took (it's moving
5 degrees a day now which is fast). So, you can see that I lined up the comet but couldn't line up all the stars.
It's quite a pretty blue-green color (blue if you're my mom, green if you're my dad) in images taken over a longer time.
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You can submit comments below. Let me know if you want to see more. Thanks.
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| WIS, Europa, Ganymede, RGB f29 08/01/09 |
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| The Wesley Impact Site has elongated, two moons and the GRS near the limb |
| Jupiter with Wesley Impact Site, RGB, f29 |
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| The southern pole region shows a black impact mark discovered by Austrailian Anthony Wesley. 072309 |
| Neptune and Triton, RGB, 09/06/09, near opposition |
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| Combined two images. Neptune taken at f29 and Triton, its largest moon, at f10 (then enlarged). |
| It's getting farther, week from closest pass, f/29 |
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| RGB image of Saturn on 3/16, good seeing but fog was rolling in, storms visible |
| It's getting closer, Venus URGB, f10, 3/5/09 |
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| Can see crescent with binos easily, try with naked eye to test your vision |
| Mercury is always around - RGB 200% f/29 10/21/08 |
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| But usually is too close to Sun - it was about 15 deg from horizon in morning (east) - poor seeing |
| It's getting farther, Uranus RGB 9/6/08, 200% f29 |
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| Same image scale as Neptune. A lot of green when imaging, less blue but boosted blue. 6th from Sun |
| Near Mars' closest distance to Earth for 2007 |
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| (It's getting farther too) |
This is an LRGB photo of Mars made on 12/21/07 05:52 GMT. It's centered near Eden but Syrtis Major is still
visible. I have an 11" SCT and used a monochrome Imaging Source USB 60 fps camera at f/25. I used Registax,
Photoshop and Maxim DL during processing. Thanks for visiting!
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