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  1. #1
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    Default Beginner: Upgrading old Orion® Atlas 10 EQ #9874



    Hi,

    I have an old Orion Atlas EQ10 mount (non-GOTO). My daughter is getting interested in astronomy so I thought it might be a good time to modernize the mount - I think she would be much more interested if she could find objects programatically.

    Is this the same mount as the EQ6 mount mentioned on KW Telescope, teleskop-express, and Hypertune - but just rebranded for the bigger scope?

    1) I'd like to get GOTO/SynScan/EQMOD functionality - these packages seem to be the same - am I right that they are the right kits for my mount?

    2) There are a lot of references to rebuilding the mount and replacing bearings - the mount has been idle for a few years and I'd like to do some astrophotography, can I assume that this is worthwhile and relevant?

    3) There are mentions of azimuth and belt mods - are these mods (or others) things I should consider while I am at it?

    Thanks,
    Dave

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    Default Re: Beginner: Upgrading old Orion® Atlas 10 EQ #9874

    First welcome to the forum
    He has passed on his legacy to his daughter as of 09/26/2017.
    Now he views the stars closeup.
    "If people would look up into the night sky as intently and as passionately as they do their phones, they would be amazed"
    >)))))*>

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    Default Re: Beginner: Upgrading old Orion® Atlas 10 EQ #9874

    Hi Dave, I had to go look that mount up as I did not know they had made it to 10 yet
    So you have an EQ-G with a 10" Newtonian?

    Some people seem to like the kits and others do not.
    They do seem to work alright but you do have to take your time installing them to make sure your clearances are set well.
    Replacing the bearings is always a good idea if pushing the capacity on a constant basis, anything to make them track smoother is good!

    Good luck and let us know how the mod goes.
    Refractors: Antares 105 f/15, Celestron 150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, UR 70 f/10, Vixen SD115s f/7.7
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  4. #4
    Pauls72's Avatar
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    Default Re: Beginner: Upgrading old Orion® Atlas 10 EQ #9874

    1) Yes those are the correct kits to make your mount a goto.

    2) They used a terrible grease on the old mounts that was more like a thick sap than a lubricant. The common steps where to disassemble it and clean it with mineral spirits. Then lubricate it with something like Super Lube. https://www.harborfreight.com/85-gra...dge-93744.html
    The large bearings on both RA and DEC axis do not normally go bad.
    There are 4 bearings on the worm gears shafts, 2 on each. These tend to go bad over time. They are easy enough to replace. They happen to be the exact same bearing that is used on roller blades and skate boards. So you can get sets pretty cheap: Set of 8 Ceramic Skateboard Bearings 608-2rs Sealed 8x22x7 608RS White Seals

    The Altitude adjustment bolts are pretty soft and bend easily. If you release the tension on the opposing bolt and lift the scope some so you aren't applying pressure when you adjust, they are OK. Or if they are already bent or you want to be safer, then replace them with some harder/stronger ones. You can try a local hardware store or get these: Atlas-EQ6 Easy Altitude Upgrade set [eq6-alt] - $35.00 : Astrotroniks, Home of The Performance Tune


    A couple of people say there are differences between the factory made goto version and upgraded version and the upgraded one is not as good for AP. I have no personal knowledge of this one way or another.


    A 10 inch reflector is pretty large and would be a beast to do AP with. It's OK for visual, but the mount is not large enough to carry it for AP. Second since the 10 inch reflector it is not an Astrograph (designed for AP) you would have to modify it my moving the primary mirror. You would probably have to install a better focuser too.
    Mounts: EQ1, LXD55, Atlas EQ-G (one with Rowan belt mod, EQ6-Rail and one without)

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  5. #5
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    Default Re: Beginner: Upgrading old Orion® Atlas 10 EQ #9874

    Thanks so much - this was hugely helpful!

  6. #6
    Pauls72's Avatar
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    Default Re: Beginner: Upgrading old Orion® Atlas 10 EQ #9874

    I have 2 Atlas EQ-G mounts. One I bough new about 8 years ago. And a second one I bought used a year ago and it is even older than my original one.
    I put the Rowan belt drive upgrade in my original one. The mount was pretty quite to start with, but it does make it quieter. I've done AP with both mounts. This is not something I would have as a high priority.

    An upgrade you would want to consider is a Dual Saddle. It clamps on to the dove tail instead of driving the fastening bolts into it. There are 2 different versions.
    DUAL-EQ6- DUAL Series Saddle. Fits SkyWatcher EQ6/ Orion Atlas Mounts - ADM Accessories
    DUAL-EQ6N- DUAL Series Saddle. Fits SkyWatcher EQ6/ Orion Atlas Mounts - ADM Accessories
    Mounts: EQ1, LXD55, Atlas EQ-G (one with Rowan belt mod, EQ6-Rail and one without)

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