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Thread: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

  1. #11
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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?



    Quote Originally Posted by sonny.barile View Post
    Point the scope at something then align the laser to it.
    Heh, heh, why thank you, Mr. Wizard!

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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    Quote Originally Posted by davidjbillo View Post
    Well, I learned a pretty neat trick at our local star party this weekend, which I found very useful for finding targets with my dob. (the finder scope on it is pretty awkward to use, especially if you're going for something up high) If you take a laser pointer, and direct it into the eyepiece, it will shoot the beam out the end of the OTA exactly at wherever it's pointing...then I just used that to point the dob exactly where I wanted. My designated target was pretty much in view of a 25mm plossl almost every time, or very nearly. Better than a Rigel or Telrad, in my opinion, but laser pointers are frowned on at some star parties.
    Yeah, I had read about that trick. I gotta try that.

    HOWEVER, it looks like the thing isn't working right, or the sky isn't cooperating, or my eyes aren't. Something. It's now fully dark here, completely cloudy, except that the sky is really brightly lit up. Somewhere in this City they must have spotlights into the clouds. It happens here, who knows why. Anyway, I'm pointing it up at the bright sky from inside a very dark room, and there's nothing - no dot, no line reaching for the heavens. It sure seems bright enough inside the house. Maybe it's because it was only $5.99 at Newegg, including shipping? But it says it's a 5mW, 532nm GLP, so that's right, right? I don't understand what's going wrong here.

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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    They don't work well if there is a lot of light. My backyard is about a Bortle 4.5 and when the moon is out I can barely see the beam. It works very well on moonless (and cloudless) nights. Clouds reflect light so I'm not surprised you couldn't see anything. Try again when it's clear and dark... or what passes for dark in NY NY. It may work okay.
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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    Quote Originally Posted by Gregg1956 View Post
    They don't work well if there is a lot of light. My backyard is about a Bortle 4.5 and when the moon is out I can barely see the beam. It works very well on moonless (and cloudless) nights. Clouds reflect light so I'm not surprised you couldn't see anything. Try again when it's clear and dark... or what passes for dark in NY NY. It may work okay.
    Ah, thanks. I was expecting more of a light sabre effect. I guess not!

    It's supposed to be cloudy here for the rest of the week, which I should have expected given that I received something new. So I guess I'll have to be patient and just look around the boards . . . like I always do.

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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    Quote Originally Posted by jgroub View Post
    Heh, heh, why thank you, Mr. Wizard!
    Yeah I know........It wasnt much to offer.......But it is a simple thing. I feel like a lot of the stuff I read just overcomplicates matters.
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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    Okay, it cleared up a little last night, mostly cloudy with tiny patches of sky peeking through . . . and it worked! I saw the laser beam in the air. I guess it does only work when it's a bit darker. Nice purchase for $5.99 at Newegg.

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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    And Homeland Security didn't show up. I guess yer good to go.
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    Default Re: How sure are we that GLPs CANNOT BE SEEN by people "far" away?

    Quote Originally Posted by jgroub View Post
    Not quite sure how to align it, because all I've got are tall buildings around here, but hopefully I'll figure it out.
    What I did was point my scope at Polaris & center it in a reticled eyepiece. I then adjusted the beam so that it appeared to be pointing at Polaris. I then fine tuned the beam by looking through the eyepiece. Obviously, my viewing location is much different than yours though.

    Quote Originally Posted by hubble538 View Post
    Ok people! I've considered one of these and could have used it last month when my son and I were star hopping and discussing points we were searching together.(no go-to scope).

    Looking on Amazon, I'm unsure as what to buy with the crazy range of items. Can someone steer me to a valid/ useful tool?

    I don't want to get ripped off!
    I have the hotech one mentioned earlier. It's worked great for me and is perfect for pointing out objects to your son, which is what I primarily use mine for. I added the remote momentary switch to mine.
    Corey

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