Feb 222017
 

The Orion nebula lies real close to the celestial equator, which means that satellite sin geostationary orbt will tend to pass quite close to it. Here are some videos some people shot that show just that happening. It seems that the satellite I managed to photograph gong through the nebula was probably a geo-sat. Which is honestly rather astonishing… my new camera, a bog-standard commercial model that is a few years past being brand new, was capable of capturing a chunk of human engineering from a distance of more than twenty two thousand miles.

 

 

 

 

 Posted by at 3:00 am
Feb 192017
 

So, John Glenn was Americas first astronaut into orbit. For a time he was Hero Number One, and apparently considered so important for PR that he was essentially blackballed from going back into space for fear that were he to die it would’ve trashed national morale. The end result was that he didn’t get to fly into space again until he was an old man.

But consider another course of events. He flies to orbit, comes back a hero… and stays a flying astronaut. In that case, chances are good he would’ve gone up on Gemini and an Apollo (not necessarily the first lunar lander, but one of ’em).

My question to ponder: let’s say on his first mission to the moon – call it “Apollo 4,” because “Apollo 1” didn’t burn up on the pad Because Reasons – something goes wrong and the crew is lost. America’s Greatest Hero dies in the course of the mission, out in deep space.

OK, we can all agree that this would be a bad thing on a human level. But from a *political* point of view… would losing the Great Hero and two Red Shirts out in space, rather than a trio of Red Shirts, have *necessarily* trashed the space program? When Challenger was lost, the crew were, as far as the public was concerned, a bunch of folks nobody knew (and one supercargo teacher that a lot of folks knew). Certainly not mid-60’s John Glenn level of celebrity. But even so, they all became national heroes instantly, and their memory helped to keep the Shuttle program going. So it seems to me that losing a national hero on the level of Glenn would *not* be an inevitable death knell to the program, but perhaps a *spur* to the program.

Thought?

 Posted by at 3:06 pm
Feb 172017
 

First night I took astrophotos I tried  to see what I could get of the Pleiades. Sadly, they don’t come through all that well compared to telescopic photos, but  at least you can see ’em. On first glance I could see a satellite pass reasonably close to them – not as close as the Orion satellite, not really worthy of note. But on closer review, you can make out a second satellite trail… much shorter streaks, much fainter, much less uniform in brightness, sometimes not visible at all. This indicates something at a higher orbit and probably tumbling. I expect it’s less “satellite” than “piece of debris,” but who knows.  This particular trail *did* pass through the Pleiades, but I didn’t catch that, my first photo being several seconds after the passage.

The second satellite is just barely visible shooting out of the right of the Pleiades. It seemed that the best way to display this so it was visible was with an animated GIF. Since it turns out to be a 2 megabyte image file, I’ve put it past a “read more” break so it doesn’t clog up the blog. The animation is a bit clunky since the series of photos was a bit stuttered.

Continue reading »

 Posted by at 10:08 pm
Feb 172017
 

So once again I was puttering around outside tonight, pointing the new camera at those mysterious lights in the sky. Most interesting result came from pointing the new camera fitted with the old  300mm lens at the Orion nebula. With the old Nikon D5000 camera and this lens, the nebula was recognizable, but looked like garbage. Now it’s recognizable and still nowhere near publication-worthy, but for just lookin’ at purposes, it’s not half bad. In order to get the shot with only a few seconds exposure, the ISO on the camera was cranked up to over 20,000, which is moderately impressive.

These photos might have been worth a single note on this blog, but you’ll notice that there are three essentially identical copies posted below. The reason why there are three is this: if you look kinda close, you can see a satellite pass straight through the nebula. I suppose it’s no more special than a satellite passing through any other patch of the sky, but actually  nailing a known astronomical object just seems kinda cool.

 

Stacking the three images produced a slightly improved-quality version, reducing some of the noise. To really improve the image quality would require a motorized equatorial mount to track the motion of the stars; this would allow a longer exposure at lower ISO.

So is this sort of amateurish astro-photography of interest?

 Posted by at 2:06 am
Feb 152017
 

In advance of a project a little ways down the road, I have procured a new camera (Nikon D5500), and have been running it through its paces. Last night I did some night sky photography, catching a whole lot of satellites. Upon reviewing the photos, one satellite seemed to do something a little odd. As far as I can tell it’s not due to the camera screwing up in any way.

 Posted by at 8:37 am
Feb 142017
 

Because why not, here’s a link to a complete PDF scan of the “Vistas of Science” book from 1961, “Spacecraft.” Nothing too exciting… a book meant for kids. But it was a book meant to explain spacecraft to kids in a era when the future looked particularly bright for spacecraft.

Cynicism alert: one might be tempted to wonder why this has remained available on the NASA technical report server. Shouldn’t it have been removed as an ITAR risk?

Spacecraft

 Posted by at 6:43 pm
Feb 122017
 

Has China beaten Nasa in building warp-drive technology dubbed the ‘impossible engine’?

Oy.

OK, the basic claim seems to be that China has built an “EM engine.” Fine, whatever. But the article goes off the rails in a hurry. Firstly, there’s the title of the article: the Em engine is *not*  a warp drive. Then the article claims that an EM engine could send a ship to Mars in a matter of weeks. Ummm… no. The tests that have been done have shown that if there is any net thrust at all (and there’s every reason to suspect that this is actually a matter of experimental error), the levels of thrust are *exceedingly* low. Instead of shoving a ship to Mars in a matter of weeks, a few weeks at full thrust will *maybe* rack up a few meter per second of delta V.

Fake space news, baby.

 Posted by at 6:30 pm