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  1. #1
    Cladinator's Avatar
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    Default Spectroscopic adventures



    A recent post (Anyone do spectroscopy and want to check my work?) reignited some interest in spectroscopy.
    I've wanted to do amateur astronomical spectroscopy for a while now. It's a cool hobby I'd like to get into.
    It will probably be a while before I can justify spending the money needed to get started.
    In the meantime, I can do really basic spectroscopy with very little.

    A while back I made a little spectroscope.

    Make your own: https://pantherfile.uwm.edu/awschwab/www/specweb.htm

    It works very well for being made out of construction paper and part of a CD.

    Here are a couple pictures I took. I just held up my smartphone to the "eyepiece" to take the shot.
    I used the editing software in my phone to crop the photo.
    I must say, I think they came out quite well.

    Here is a shot of the spectra from an incandescent bulb:

    It's basically a continuous spectrum.

    But wait, here's a shot of the spectra from a CFL bulb:

    That's quite a difference.

    I compared my images to other images online and found that they were very much the same.
    The details encoded in the spectra are interesting and worth researching.

    I actually posted a thread about this spectroscope when I first made it. After capturing better shots and getting a little more interested in spectroscopy I thought it deserved another run.
    The DIY spectroscope is easy to make and you likely have the supplies on hand. Give it a try.
    Last edited by Cladinator; 04-27-2012 at 03:41 AM.
    -Nick

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  2. #2
    Flea77's Avatar
    Flea77 is offline SUPER GIANT
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    Default

    I need to try this just for grins, I think it would be a blast! Every tried to point it at a star? Or the sun?

    Allan

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    Cladinator (04-27-2012)

  4. #3
    Cladinator's Avatar
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    Default

    Yes, I've pointed it at the sun. I need to try to take a picture of that. That might be tough because the light may be too bright and wash out the image.
    I've never tried pointing it at stars. I don't think it would be bright enough.
    -Nick

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  5. #4
    sk0rponok's Avatar
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    Default

    Shelyak Instruments

    Shelyak Instruments - Star Analyser

    been thinking about this lately
    what do you think of this little piece of kit?

 

 

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