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Monday, August 30, 2010

jupiter and moons

jupiter and moons
Originally uploaded by mehampson

Jupiter is rising early these days, the brightest object in the night sky besides the moon. I mounted my 70-200mm on a tripod, and though it's not what I'd call a functional astrophotography setup, I love that I was able to get a clean shot of several of Jupiter's moons.

This image is very heavily cropped. 200mm did not get me very close to Jupiter. Even still, this little white blob is about 300 times the mass of Earth.

It reminds me a bit of an opportunity I had in college to visit a radio telescope observatory. They had some optical telescopes, much more powerful than anything I'd ever played with at home, and Saturn was visible the night we were there. It's honestly one of the most amazing things you could hope to see: this unimaginably giant planet, with pale desaturated brown and tan bands and huge wide rings, with bright little moons hanging next to it, the whole thing tiny but crystal clear in the eyepiece.

I wish I lived in a place where light pollution didn't drown out everything dimmer than a low-flying airplane. The actual beauty of these planets seen in person -- naked eye or telescope -- is completely unlike anything else. The sense of distance, uncrossable distance, is profound and I think quite necessary.

Friday, August 20, 2010

New Photos

Sorry for the lack of posts lately -- been a hectic couple of weeks. Lots of work, lots of back and forth, and very little time to sit down to get through photos. But here's a few that I added to my gallery this week.

Long-horned bee in sunflower

A skipper drinks nectar from a bee-bush.

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Thursday, August 5, 2010

Long-horned bee

A long-horned bee taking nectar from a sunflower.

A male long-horned bee, possibly in the genus Melissodes, drinks nectar from a sunflower. The long-horned bees, or Eucerini, are a large tribe of solitary bees that dig nests; like most solitary bees the actual nesting habits varies from species to species, but none of them build the huge nests we associate with honey bees. And none of them have the same complex social structure with queens, workers, and drones. The Eucerini get their name from the extremely long antennae of the males: the word itself means "true horn".

I see large crowds of these bees on sunflowers near me, especially in mid to late summer. The males hang out and drink nectar, and wait for a chance to mate with females who stop by for a break in their constant pollen-gathering. They start early and work at it all day: I walked past some at about 8:30am this morning and there were several females with heavily-loaded pollen baskets. A few miner bees and tiny sweat bees as well.

I took this shot yesterday afternoon. It's at a 1:1 magnification ratio, so just the macro lens without any tubes. The flash, a Canon 430EX II, is mounted on a bracket I put together, and shot through a diffuser made out of an old yogurt cup and Rosco diffusion paper. Unfortunately, right after I finished with these bees and started walking to the next place I hoped to find bees, the off-camera cord I had the flash mounted on literally ripped off of its threaded mounting post, and bungeed down onto the street. No damage, I think, since the coil-cord slowed its fall, but it's making me seriously rethink the value of using the cord's hotshoe as a mount: obviously there's too much flex and stress with the flash's center of gravity so much higher than where it's secured.

The identification of this bee proves difficult. I got several clear shots of the wing venation, an important characteristic to select between the hundreds of species of bees in New England, and one or two showing the color and texture of the thorax very nicely. With this, I used the bee genera guide at discoverlife.org to narrow it down to a few species in several genera that don't really look like perfect fits -- different proportions and eye color, for example -- or one eleven species in the genus Melissodes, which I think this probably is. The guides at discoverlife.org are highly detailed keys that need more knowledge than I actually have, not to mentioned a mounted specimen and a microscope, to take full advantage of, but it's still extremely useful in drilling down with the right shots. Once I repair my rig, I plan to go back to these flowers at night to shoot them sleeping -- the males really don't seem to leave -- and hopefully get a few other details that will help confirm the ID.

Friday, July 23, 2010

Under construction

I'm doing some renovations to my blog and gallery. In case you happen to visit while I'm experimenting and things look really broken or just plain gross, this is why -- it's only temporary.