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  1. #1
    CruisingTheCosmos's Avatar
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    Default Trying to spot M1 Crab nebula with 12'' Dobsonian



    Hey all,

    So I took my 12'' Dobsonian Zhumell Z12 out earlier tonight. After getting a surprisingly good view of Orion I decided to look for the Crab Nebula. I used the attached finder scope and 9mm, 6mm, and 4mm eyepieces. I gave up after searching for nearly 30 minutes. Here's my question:

    Should I have started with a larger eyepiece, maybe a 1.25", or would the nebula not even be visible through that?


    Thanks in advance.

  2. #2
    kbeverage's Avatar
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    A larger eyepiece would be better to locate the nebula, then you could always bump the magnification up. Here is an image I took a few weeks ago, magnification was approx. 57x which would be a 25mm EP in your scope:


    Realistically it probably won't even be this bright, especially if you are viewing form a suburban location. Just take your time and eventually you should get it.
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  4. #3
    CruisingTheCosmos's Avatar
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    Default

    It still might work, though I can't see nearly that many stars through a 25mm. Thanks for the tip!

    Looks like tonight is about the only good night to see it this week, but it's nearly 12:30AM.

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    You'll definitely be able to see it in a 12". I've spotted it in my 4" mak from an orange zone.
    -Nick

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    -Zhumell Z12 Dobsonian, Celestron Nexstar 4SE, Celestron 20x80 SkyMaster binoculars, Telrad, Rigel QF, Hyperion Baader Zoom, Celestron accessory kit

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    I have been trying to find that thing for months to no avail. I'm going wait for the next clear night that I'm off early and head out to my local observatory (green zone) to sketch it. I've all but given up from my backyard slab. (Red zone)

    Good luck, I'm pulling for you,
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    Hi
    TBH with your big 12" scope you should see M1 through the bottom of a Coke bottle.
    Regards Steve
    Steve

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    The Crab is very diffuse and faint. Try averted vision as you search for it with a wide field eyepiece. Light pollution makes it more difficult, of course. It's one of those objects were you will say, "I definitely saw it....I think".
    Regards,
    Clay

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    It's tough to see -- very faint -- how CHUCK Messier ever saw it first I have no idea!
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  13. #9
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    Quote Originally Posted by Joe Lalumia View Post
    It's tough to see -- very faint -- how CHUCK Messier ever saw it first I have no idea!
    Well for one thing he didn't have a city full of lights that stay on all night, that right there probably helped a lot
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    M1 is a supernova remnant that's been dimming since it went off in 1054. I read somewhere that it was probably twice as bright in Messier's time.

    As for seeing it today, I was able to see it (barely) in my 6" in an area bathed in streetlights. It think the trick is to keep as low a magnification as possible.

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