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Thread: A closer look

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    Liamgalloway's Avatar
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    Default A closer look


    I have been very interested in astronomy for years and finaly i have purchased a telescope...

    Tonight the sky was clear so i took a look at the moon this was amazing then i set my scope to jupiter i could see a bit of detail but not much

    i have a Celestron 130 astromaster with 2 eyesieces 10mm and 20mm erectng eyepiece

    Can you advise me on what eyepiece i need to purchase to take a closer clear look at planets ?

    Thank You

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    Celestron AstroMaster 130 EQ

    130mm Reflector Telescope Kit features 650mm f/5 Newtonian Reflector,
    Manual Equatorial Mount.

    10mm and 20mm

    Magnification = focal length of scope / focal length of eye piece
    so, you have

    650 / 10 = 65x
    650 / 20 = 32.5x

    Those two supplied eyepieces should give you
    a wide view ( 32.5x ) and a medium power view ( 65x ).

    I personally would look to get a higher power eyepiece - around 4 to 5 mm - for a 162x view with the 4mm or a 130x with the 5mm.
    I would opt for the best quality with a wide Field of View ( FOV ) that you could afford - if you go this route. You may want to look for a used ep
    if you choose this strategy. This will provide a slightly higher magnification
    factor that you will probably want.

    You could also get a 2x Barlow lens to couple with the two lenses you already have. That will give you the equivalent of a 5 mm when used with the 10 mm ep, and a second 10 mm when used with the 20 mm ep. It's a little redundant IMO.
    No doubt the Universe is unfolding as it should...

    Astro-Tech AT106 f/6.5 apo, DesertSkyAstro DSV-2 Alt-Az mount.
    WmOptic 3mm SPL, Lanthanum 7.5mm, ES82*11mm, ES82*24mm. Shorty 2x
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