Social space for birds

Birds, like us, seem to want to keep some social distance. Is there anything  complicated to it, or are they just leaving enough room to take off?  Why is the spacing wider on the neutral (top) phase than on the far phase?  What’s the story with the guy off by himself?      

Xsan 2.3 client won’t mount

I’m having a problem with clients dropping their  xsan volumes, usually on a restart of the client.  The fix I used is below, but  I’d live to have abetter method.  Here’s what I know: The MDCs are running 10.7.4, as are the clients.  There is a ghost directory that I have deleted, but it returns … Read more

Hopes for Lytro

I was one of the ones who pre-ordered a Lytro pretty much as soon as the product was announced last year (http://blog.lytro.com/wp-content/uploads/2011/10/Lytro-Camera-Launch-Press-Release-10-19-11.pdf). I immediately took a bunch of shots, and immediately thought, “this is, right now, a one-trick pony”.   By the way, if there are big gaps in the post, the lytro plugin seems … Read more

Why collimate? And an excuse to try LaTeX

I’ve been enjoying a book i got on sale thru SPIE, Friedman and Miller’s “Photonics Rules of Thumb”.  Much of it is (literally) rocket science, but there are wonderful offerings for the advanced beginner, especially in the introductory sections.  One tidbit amateur astronomers may find interesting is a formula relating to the optical performance of … Read more

A thunder storm

We did get an inch-and-a-half of rain and the landscape is greener.  During the storm, I tried out the video feature of the Canon 60Da because we were getting quite a lightshow.  The camera was running at 59.94 fps.  The CMOS sensor reads out from top to bottom,  so it records only partial frames of … Read more

Weather radar suspense theater

A light rain is falling, hopefully ahead of the much-needed downpour they’re getting to the west.  All Summer I’ve been eyeballing the radar and hoping the storm trajectory intersects our farm.  We’ll see a nice red blob pass just to the south, they get an inch, we get nothing