you can look at something under high magnification for a few seconds before it disappears, and then you have to figure out how to track RA with an alt-az mount under high power and find the object again
You shouldn't be using high magnification with a dobsonian. In fact, at the price point we're discussing here, you shouldn't be using high magnification at all.
Through a 4.5" f/6 Dobsonian with a decent wide-angle eyepiece, you can see Saturn's rings and Jupiter's moons plus a hint of cloud patterns, you can see open and globular clusters, and you'll have to push the telescope to re-center the object once every couple of minutes tops.
No. People who give away telescopes to thrift stores are people who didn't think very carefully about their telescope purchase to begin with. You don't want their hand-me-downs.
The telescopes listed in your "one set of suggestions" link are good. To get a telescope that's intended for real amateur astronomers rather than cheap junk for hopeful clueless parents, get a small reflector, not a refractor. I teach at a college: in our class for nonmajors, we introduce them to the sky with Orion Starblast 4.5s, which are cheap, compact and easy to carry, bulletproof, and easy to use. The magnification is low for planets, but that means it's easier to find things, and easier to track them manually through the sky. Orion also sells the SkyScanner 100mm, a slightly smaller, significantly cheaper version of the same thing. Their XT4.5 dobsonian is a little bigger and more expensive, and will give a better view of the planets but be more difficult to use for deep sky objects.
What I'm saying is, buy a small reflector from Orion.
The explanation I've heard is that the show is shot and edited for Australian television first, where it takes the form of a half-hour episode (without commercials? not sure). For the American edition, they pad it up to an hour with commercials, but can't really add new content so it's just repetition.
I deliberately left out things that are impossible, useless, or poorly defined. I suspect most of the items you mention are in this third category, but time will tell.
The dreams of golden age science fiction came in two varieties: technologies that require massive amounts of energy and power (jetpacks, flying cars, space colonies) and technologies that require incredible control of matter on the microscopic and atomic scale (electronics, biochemistry, etc.) We've mostly failed to make progress in the first category, but we've surpassed the wildest dreams of every 1950s sci-fi author in the second.
"The last time the Russians got this aggressive was their invasion of Afghanistan under Jimmy Carter" I think you're forgetting that they invaded Georgia when George W. Bush was president.
Wow, I had no idea Jimmy Carter was the leader of Afghanistan, but if so it makes sense that Russia would follow up by invading his home state...
Social mobility and democracy are not the same thing, and neither are the opposite of communism.
The actual amount of social mobility in today's American democracy is damn near zero. Obama was raised in a family of anthropologists and bank vice presidents, and let's not even talk about the Bushes. Gorbachev's parents were farm workers.
(Picking on Gorbachev because he was the only Soviet leader born after the revolution.)
Agree. But it's not just autocracy either: whoever you are, if you believe you live in an unfair world where you're constantly being cheated, you will cheat too since it's the only way to get what's yours. Fairness inspires fairness, corruption breeds corruption.
You're missing the point. The individual SWAT cops who bust down your door are employed by the cities they serve, not the LEC. The LEC has no law enforcement authority: it's just a phone tree, a seminar room, and a place to park the SWAT truck.
I never said the military doesn't have rules, but they're not the rules you want for dealing with intranational criminal violence. That ROE is missing a little bit of info on how to talk armed men into surrendering, how to disable them without killing them, how to arrest them without screwing up their Miranda rights, how to avoid contaminating a crime scene, how to avoid property damage, the list goes on.
I don't want my military to know all that stuff. I want them to be good at killing enemy combatants when civil authority has been abandoned. If you make soldiers be cops, you get dangerous cops and terrible soldiers.
This conversation's going nowhere because we've started with a one-sided news report and all of us agree that this is bullshit. It's chest-high full of straw men in here. So here's an attempt to describe the SWAT teams' legal rationale for this. It comes from reading the news report, reading the Law Enforcement Councils' website, and living in Massachusetts so I know how local government works. Plus a lot of "what would I do if I were evil" speculation.
Massachusetts has very weak county government. Local law enforcement, even in rural areas, happens at the town level. Many small towns have like one cop car and two cops, and can't afford a crime lab, a drug lab, a K-9 unit, and whatnot. The county provides specialist services to all the towns within it, but SWAT teams are not one of these services. It makes total sense that local towns would form a cooperative association (the LECs) to pool their limited SWAT resources.
From what I read on their websites, it looks like SWAT personnel don't work for the LEC. They're ordinary town cops who're assigned duty to work with other town cops through the LEC. That is to say, the LEC has no law enforcement authority, but the individual cops do. The LEC provides equipment storage, networking, and shared training for the town cops. As far as I can tell, legally, the LEC is just a place to park the SWAT van, a seminar room for Powerpoints, and a phone tree.
It's not a private army, I bet they'll say, it's a professional association, just like how your city's dentists all get together at the country club first Tuesday of the month. All the personnel are employed by the towns. All the equipment belongs to the towns. You want the public records for your recent 3 a.m. visit by the battering ram boys? Talk to your town.
Now, clearly, this is all bullshit. But it seems to me to be well-crafted bullshit, created by the SWAT teams' lawyer buddies, and we're not going to make it go away unless we appreciate it for what it is.
I strongly disagree. The military, including the national guard, has lots of training in killing, but little training in hostage recovery, preservation of criminal evidence, the rights of suspects, and protecting the safety of bystanders.
The police fall down on these things a lot, but at least they know how they're *supposed* to work. The national guard are the people you send in when you intend to kill citizens and you don't intend to have a trial afterward. (This is why the "peaceful" deployments of the guard in the civil rights era ended with dead citizens: that's their job.)
There is a time and a place for military suppression of unrest, but the SWAT team is an absolutely necessary middle ground between the beat cop and martial law.
"US doesn't have any allies any more; just enemies"
That's not true! We have lots of allies. "Ally" means "someone we give $billions of military aid to despite the fact that they hate us and murder their own citizens", right?
By definition, BitCoin is money. Troll more elsewhere. "any article or substance used as a medium of exchange, measure of wealth, or means of payment, as checks on demand deposit or cowrie."
Slashdot Mirror
It's not marketspeak, it's an old rocket scientist joke.
You shouldn't be using high magnification with a dobsonian. In fact, at the price point we're discussing here, you shouldn't be using high magnification at all.
Through a 4.5" f/6 Dobsonian with a decent wide-angle eyepiece, you can see Saturn's rings and Jupiter's moons plus a hint of cloud patterns, you can see open and globular clusters, and you'll have to push the telescope to re-center the object once every couple of minutes tops.
I haven't used this scope, but it checks off all the right boxes. Seems like a good choice to me.
No. People who give away telescopes to thrift stores are people who didn't think very carefully about their telescope purchase to begin with. You don't want their hand-me-downs.
The telescopes listed in your "one set of suggestions" link are good. To get a telescope that's intended for real amateur astronomers rather than cheap junk for hopeful clueless parents, get a small reflector, not a refractor. I teach at a college: in our class for nonmajors, we introduce them to the sky with Orion Starblast 4.5s, which are cheap, compact and easy to carry, bulletproof, and easy to use. The magnification is low for planets, but that means it's easier to find things, and easier to track them manually through the sky. Orion also sells the SkyScanner 100mm, a slightly smaller, significantly cheaper version of the same thing. Their XT4.5 dobsonian is a little bigger and more expensive, and will give a better view of the planets but be more difficult to use for deep sky objects.
What I'm saying is, buy a small reflector from Orion.
I can't say much for certain about Mythbusters, but I'm sure of one thing: Kari Byron's career is not over.
The explanation I've heard is that the show is shot and edited for Australian television first, where it takes the form of a half-hour episode (without commercials? not sure). For the American edition, they pad it up to an hour with commercials, but can't really add new content so it's just repetition.
I deliberately left out things that are impossible, useless, or poorly defined. I suspect most of the items you mention are in this third category, but time will tell.
The dreams of golden age science fiction came in two varieties: technologies that require massive amounts of energy and power (jetpacks, flying cars, space colonies) and technologies that require incredible control of matter on the microscopic and atomic scale (electronics, biochemistry, etc.) We've mostly failed to make progress in the first category, but we've surpassed the wildest dreams of every 1950s sci-fi author in the second.
Bitter tears of regret.
PHP Formal Specification:
1) Don't use PHP.
Wow, I had no idea Jimmy Carter was the leader of Afghanistan, but if so it makes sense that Russia would follow up by invading his home state...
Social mobility and democracy are not the same thing, and neither are the opposite of communism.
The actual amount of social mobility in today's American democracy is damn near zero. Obama was raised in a family of anthropologists and bank vice presidents, and let's not even talk about the Bushes. Gorbachev's parents were farm workers.
(Picking on Gorbachev because he was the only Soviet leader born after the revolution.)
Agree. But it's not just autocracy either: whoever you are, if you believe you live in an unfair world where you're constantly being cheated, you will cheat too since it's the only way to get what's yours. Fairness inspires fairness, corruption breeds corruption.
You're missing the point. The individual SWAT cops who bust down your door are employed by the cities they serve, not the LEC. The LEC has no law enforcement authority: it's just a phone tree, a seminar room, and a place to park the SWAT truck.
Or so they'll say.
I never said the military doesn't have rules, but they're not the rules you want for dealing with intranational criminal violence. That ROE is missing a little bit of info on how to talk armed men into surrendering, how to disable them without killing them, how to arrest them without screwing up their Miranda rights, how to avoid contaminating a crime scene, how to avoid property damage, the list goes on.
I don't want my military to know all that stuff. I want them to be good at killing enemy combatants when civil authority has been abandoned. If you make soldiers be cops, you get dangerous cops and terrible soldiers.
This conversation's going nowhere because we've started with a one-sided news report and all of us agree that this is bullshit. It's chest-high full of straw men in here. So here's an attempt to describe the SWAT teams' legal rationale for this. It comes from reading the news report, reading the Law Enforcement Councils' website, and living in Massachusetts so I know how local government works. Plus a lot of "what would I do if I were evil" speculation.
Massachusetts has very weak county government. Local law enforcement, even in rural areas, happens at the town level. Many small towns have like one cop car and two cops, and can't afford a crime lab, a drug lab, a K-9 unit, and whatnot. The county provides specialist services to all the towns within it, but SWAT teams are not one of these services. It makes total sense that local towns would form a cooperative association (the LECs) to pool their limited SWAT resources.
From what I read on their websites, it looks like SWAT personnel don't work for the LEC. They're ordinary town cops who're assigned duty to work with other town cops through the LEC. That is to say, the LEC has no law enforcement authority, but the individual cops do. The LEC provides equipment storage, networking, and shared training for the town cops. As far as I can tell, legally, the LEC is just a place to park the SWAT van, a seminar room for Powerpoints, and a phone tree.
It's not a private army, I bet they'll say, it's a professional association, just like how your city's dentists all get together at the country club first Tuesday of the month. All the personnel are employed by the towns. All the equipment belongs to the towns. You want the public records for your recent 3 a.m. visit by the battering ram boys? Talk to your town.
Now, clearly, this is all bullshit. But it seems to me to be well-crafted bullshit, created by the SWAT teams' lawyer buddies, and we're not going to make it go away unless we appreciate it for what it is.
PS: but nothing I said above is a defense of the Massachusetts LECs' disgusting legal fiction.
I strongly disagree. The military, including the national guard, has lots of training in killing, but little training in hostage recovery, preservation of criminal evidence, the rights of suspects, and protecting the safety of bystanders.
The police fall down on these things a lot, but at least they know how they're *supposed* to work. The national guard are the people you send in when you intend to kill citizens and you don't intend to have a trial afterward. (This is why the "peaceful" deployments of the guard in the civil rights era ended with dead citizens: that's their job.)
There is a time and a place for military suppression of unrest, but the SWAT team is an absolutely necessary middle ground between the beat cop and martial law.
"US doesn't have any allies any more; just enemies"
That's not true! We have lots of allies. "Ally" means "someone we give $billions of military aid to despite the fact that they hate us and murder their own citizens", right?
Seriously. Adapt to the local social norms, moron, you're making me embarrassed to be an American.
(Well, okay, that's far from the most shameful thing we Americans have done overseas, but still.)
"Lead" pronounced "leed", meaning something used to guide (electric current, in this case).
Sparkfun is a hobby electronics company. Surface-mount LEDs are a pain to solder by hand, and impossible to prototype.
Right now Charles Stross is steepling his fingers like and saying "Excellent...."
https://www.youtube.com/watch?...
Sure, it's money. It's just not very good money.