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  1. #1
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    Default Learning to observe the Sun



    I am looking to start the Astronomical League's Solar Observing program. As I began to review it, I discovered how more complex observing the sun is than I imagined. Now that's not an issue, but some of the qualifications get into sunspot classification which implies being able to denote location on the sun,
    degrees apart between sun sun spot characteristics, etc.

    Now I am planning on direct observation with a 10 in dob and solar filter. However, noting sun position, degrees of separation, etc would seem difficult w/out some means of referencing. So my questions are:

    1) how do you determine sun location when identifying sun spots and other activity (eye ball it, use some objective method, etc)?
    2) do you use a filter on your eyepiece to create more contrast of sun features? If so, what?

    Thanks.
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  2. #2
    Dragonsfire's Avatar
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    Default Re: Learning to observe the Sun

    To create more contrast I found the OIII to be the best, others use the Continuum-UV/IRcut filter combo (must be used in combo).

    This might be a good start
    http://www.physics.wku.edu/~thlee/as...t_spring09.pdf
    Neil
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    XT8i, AR102
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  3. #3
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    Default Re: Learning to observe the Sun

    Also please have a look at what the lads are up to in this group.

    http://www.astronomyforum.net/groups...g-imaging.html

    Lot's of folk with plenty of solar knowledge.

    Cheers

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  4. #4
    Smonohan's Avatar
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    Default Re: Learning to observe the Sun

    Dragonsfire,

    AAACCKK! You assigned me homework!

    Actually I opened and read it...it does help. I will probably need to develop some estimation skills on sun location, but augment with some photography or video for more accurate and objective measuring. I figured a combination of both visual and photo methods would be needed.

    Also, thanks for the filter recommendation. I have been looking at various OIII filters and this gives me another reason to buy one.
    Orion XT10 and 20x80 Binos
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  5. #5
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    Default Re: Learning to observe the Sun

    LOL, your welcome

    Got mine here from the manufacturer.
    Order USA


    Urban Astronomy: The Best Kept Secret In Nebula Filters! DGM Optics!
    Neil
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  6. #6
    Smonohan's Avatar
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    Default Re: Learning to observe the Sun

    Dragonsfire,

    Did you just get the OIII filter from dmgoptics or get one or more of the others? I am mainly interested in LP Filter and others that combat LP due to the white/red zone I live in.

    It looks likel all 4 if not at least 3 would be beneficial and individually not too pricey. I will definitely ask for maybe two for fathers day....just which two?
    Orion XT10 and 20x80 Binos
    ES 68 deg. 28mm, 20mm & 16mm w/2X focal extender
    ES 70 deg 25mm & Celestron 8-24mm Zoom lens
    DGM NPB, OIII, VHT & GCE Filters 1.25"
    Canon T5 W/ES 18-55 and 75-300 mm lens
    IOptron Smart EQ Mount
    Amateur Radio Station - KG5JBY

 

 

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