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Thread: Meade Equatorial wedge settings

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    Default Meade Equatorial wedge settings



    I've had this scope going on 25 years and it's never been able to track objects well. The tracking is good for planetary AP but I want to get it "perfect" as I'm starting to really get into AP and want to image some deep sky objects. I've tried everything but I think it comes down to the latitude setting on the wedge itself. There is no "tick" mark to ensure you have it set to the proper latitude. I've moved a few times since using this scope how can I know that the wedge is set correctly? Is there a reference I can use for accuracy? The manual is no help.
    Thanks
    Meade 2080 8" SC old school scope. No electronics except for the RA motor. Equatorial mount Eyepieces - 6.7 Ultra Wide Angle, 20mm and 25mm ,2x Barlow
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    Default Re: Meade Equatorial wedge settings

    Quote Originally Posted by theandies View Post
    but I want to get it "perfect" as I'm starting to really get into AP
    Forget the wedge and get an equatorial mount. That wedge is just going to be an exercise in frustration. There is NOTHING about it that will even come remotely close to "perfect". If your first thought is "I can't afford an EQ mount" then continue to fiddle around with the frustrating wedge (you COULD get it close enough for some short exposures) while you save, save, save for a good EQ mount.

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    Default Re: Meade Equatorial wedge settings

    A wedge is an equatorial mount and as good as, or better, than any german equatorial mount. It has the advantage of not requiring a meridian flip. By tick marks, are you referring to a missing latitude scale, or a pointer showing exact latitude?

    In any event. Just set it close to your geographical latitude. When you polar align, the correct latitude is naturally obtained when you adjust the azimuth and latitude. They are rarely 100% accurate anyways, so only a polar alignment sets it perfectly.
    Mark
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    Default Re: Meade Equatorial wedge settings

    Thanks for your replies.
    Your mount is the same as mine. Yes, where is the reference for getting the latitude to lineup? Do you use the center of the thumbscrew? Some place on the plate? Or just guess?
    I'd just like to get it a close as possible before polar aligning. My RA tracks good but declination is always a bit off. Sometimes better than others but that is a product of how long I take to align. Also, how much drift can a long exposure image capture tolerate? I'm thinking in terms of a few minute exposure, something like that.
    Meade 2080 8" SC old school scope. No electronics except for the RA motor. Equatorial mount Eyepieces - 6.7 Ultra Wide Angle, 20mm and 25mm ,2x Barlow
    JMI motofocus
    Orion StarShoot USB Camera eyepiece - Canon t6i

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    Default Re: Meade Equatorial wedge settings

    Quote Originally Posted by theandies View Post
    Thanks for your replies.
    Your mount is the same as mine. Yes, where is the reference for getting the latitude to lineup? Do you use the center of the thumbscrew? Some place on the plate? Or just guess?
    I'd just like to get it a close as possible before polar aligning. My RA tracks good but declination is always a bit off. Sometimes better than others but that is a product of how long I take to align. Also, how much drift can a long exposure image capture tolerate? I'm thinking in terms of a few minute exposure, something like that.
    I have always just used the center of the knob as the reference, but as I said earlier, I get it perfect during the actual polar alignment. For long exposure photography there can be no drift. That is easier said than done, which is why auto guiding is used for long exposure AP.
    Mark
    Celestron: C11 ~ C8 Orange ~ Celestar 8 ~ CR150HD6 ~ C5 Orange ~ Comet Catcher ~ Firstscope 114
    Meade: Starfinder 10eq ~ AS80
    Imaging: ZWO ASI120MC ~ ZWO ASI224MC ~ ZWO ADC ~ Canon T3i ~ Meade OAG
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    Default Re: Meade Equatorial wedge settings

    To improve your tracking, you will need to learn drift alignment. I also use a 10" digital Husky level I bought from Home Depot to help set up my scope.
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    Default Re: Meade Equatorial wedge settings

    Thanks Sully, I'm familiar with drift alignment but I've never been able to achieve more that 5 minutes before drift starts. It's probably more and my impatience than my setup. I just asked this to try and eliminate any hardware issue and I've never had much confidence in my wedge setup.
    Meade 2080 8" SC old school scope. No electronics except for the RA motor. Equatorial mount Eyepieces - 6.7 Ultra Wide Angle, 20mm and 25mm ,2x Barlow
    JMI motofocus
    Orion StarShoot USB Camera eyepiece - Canon t6i

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    Default Re: Meade Equatorial wedge settings

    Quote Originally Posted by theandies View Post
    Thanks Sully, I'm familiar with drift alignment but I've never been able to achieve more that 5 minutes before drift starts. It's probably more and my impatience than my setup. I just asked this to try and eliminate any hardware issue and I've never had much confidence in my wedge setup.
    5 minutes? I would say you are doing everything just fine my friend. Most unguided setups, no matter how good the PA, are only going to be good for 2 minutes tops. Mount error just won't allow it.
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    Mark
    Celestron: C11 ~ C8 Orange ~ Celestar 8 ~ CR150HD6 ~ C5 Orange ~ Comet Catcher ~ Firstscope 114
    Meade: Starfinder 10eq ~ AS80
    Imaging: ZWO ASI120MC ~ ZWO ASI224MC ~ ZWO ADC ~ Canon T3i ~ Meade OAG
    Mounts: CGEM ~ Vixen GPEQ5 Synscan ~ Wedged Forks ~ Starfinder GEM

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