Skip to main content

Chasing the moon

The March "super moon" got me started (crazed? loony?) photographing the moon again. This time I'm creating a test sequence, if you will, using the OM 300mm with the E-P2 and adapters. I bought the used OM 300mm to get a bigger image of the moon over the Zuiko Digital 50-200mm zoom. It was cheaper than buying either the EC-20 or a telescope and I can easily task the 300mm for other terrestrial uses.

New quarter 9 April 2011
9 April 2011

Why do I keep doing this, especially when there's other resources like Nasa's Lunar Reconnaissance Orbiter (LRO)? Because there's something deeply satisfying in doing it yourself, even if it's no where near as detailed. There's something magical watching the terminator crawl across the surface of the moon, picking out craters in deep shadow. I'll never grow tired watching it happen, no matter how many times it repeats. That curvature, those shadows, show that the moon is a real body in space, something you can walk on. So close, and yet so far.

New Moon 8 April 2011
8 April 2011

Even at 300mm, or 600mm effective focal length with the E-P2's sensor, the size of the moon's image compared to the size of the frame is small. To achieve what I would consider an effective image size, I'd want something to gives me four times the image size, or 1200mm (2400mm effective focal length). We're talking about a very expensive conventional optic here; for example the Canon EF1200mm 1:5.6 L sells used for $99,000. That is, if you can find one.

Maybe I really will get that telescope after all. My wife is going to kill me...


Popular posts from this blog

cat-in-a-box channels greta garbo

So I'm sitting at my computer, when I start to notice a racket in back. I ignore it for a while until I hear a load "thump!", as if something had been dropped on the floor, followed by a lot of loud rattling. I turn around and see Lucy in the box just having a grand old time, rolling around and rattling that box a good one. I grab the GX1 and snap a few shots before she notices me and the camera, then leaps out and back into her chair (which used to be my chair before she decided it was her chair).

Just like caring for Katie my black Lab taught me about dogs, caring for Lucy is teaching me about cats. She finds me fascinating, as I do her. And she expresses great affection and love toward me without coaxing. I try to return the affection and love, but she is a cat, and she takes a bat at me on occasion, although I think that's just her being playful. She always has her claws in when she does that.

She sits next to me during the evening in her chair while I sit in mi…

vm networking problem fixed

Over the weekend I upgraded to Windows 8.1, then discovered that networking for the virtual machines wouldn't work. Then I tried something incredibly simple and fixed the problem.

Checking the system I noticed that three VMware Windows services weren't running; VMnetDHCP, VMUSBArbService, and VMwareNatService. VMware Player allows you to install, remove, or fix an existing installation. I chose to try fixing the installation, and that fixed the problem. The services were re-installed/restarted, and the virtual machines had networking again.

Once network connectivity was established there was exactly one updated file for Ubuntu 13.10, a data file. This underscores how solid and finished the release was this time. Every other version of every other Linux installation I've ever dealt with has always been succeeded by boatloads of updates after the initial installation. But not this time.

Everything is working properly on my notebook. All's right with the world.

sony's pivotal mirrorless move

I'm a died-in-the-wool technologist, even when it comes to photography. I have always been fascinated with the technology that goes into manufacturing any camera, from the lenses (optics) through the mechanical construction, the electronics involved, and especially the chemistry of the film and the sophistication of the digital sensor. It's amazing that the camera can do all it's asked of it, regardless of manufacturer.

Of all the types of cameras that I've really taken an interest in, contemporary mirrorless (again, regardless of manufacturer) are the most interesting because of the challenging problems the scientists and engineers have had to solve in order to build a compact but highly functional camera. In particular I've followed the sensor advances over the years and watched image quality climb (especially with μ4:3rds) to exceed film and rival one another such that there's very little difference any more as you move from the smaller sensors such as 4:3r…