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Thread: Undecided....Dob 6" or 8"???

  1. #11
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    Default Re: Undecided....Dob 6" or 8"???



    I'm thinking that maybe in the future I decide to take up astrophotography (I already own a DSLR and know quite a lot about photography). So here's my question:

    Can I mount both the 6" and 8" tube on an equatorial mount? Will I need a more expensive mount for the 8"?

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    Default Re: Undecided....Dob 6" or 8"???

    I always thought bigger was better

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    Default Re: Undecided....Dob 6" or 8"???

    Bigger is better. from what I understand dobs don't make for great AP . Perhaps on a goto mount? I am not sure. But for visual, if you can afford it the 8" will be king!

    Good luck and keep us updated on your choice!

    Cheers
    .

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    Default Re: Undecided....Dob 6" or 8"???

    Bigger IS NOT always better... its a common misconception and the phrase often used in this hobby is the best scope is the one you use the most...after a hard frustrating day at work or play the effort to lug a big scope outside often results in not even using it but a small scope that is very easy to grab and walk out the door "may" have a chance of being used... And for AP size of the scope is not a factor ..

    Sure you can mount a 6 or 8 inch Dob on a GEM mount..its only takes money to buy a mount that can handle the scopes weight and bulk plus counterweights and camera etc BUT you may still have some issues with being able to focus with a camera

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    Default Re: Undecided....Dob 6" or 8"???

    Oh, oh!! Now you mentioned AP - another road altogether. There's an entire forum here that's devoted to AP, and it will provide you with enough information to make your eyes water. Don't fuss over this purchase. It's impossible to buy a first scope that will satisfy your every wish. You can do most anything with any scope and any mount, it's just that some scopes and mounts will do some things better. I have an Orion 10" GoTo and I'm doing DSO astrophotography. My pics won't win any awards at the county fair but they're good enough to make me wet my pants whenever I see what I've done with a Canon point and shoot, using afocal.

    My avatar shows my pinwheel. There are much better images of the pinwheel but I don't have the expensive equipment that these other folks have. Try to stay focused on what you really want now, and don't attempt to buy something that will do everything in the hobby that's possible. Use the scope for a while then come back here for questions on what to do next. There's a lot of experience here, and as you have already seen - a bunch of differing opinions.

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    Default Re: Undecided....Dob 6" or 8"???

    I'd recommend an 8" Dob for you. As you mentioned in your list, there are positive and negative factors in every decision. BUt the 8" will have more light gathering power than a 6" - I know this from my own experience with prior scopes I have built - both a 6 and an 8. If you don't mind a bit of extra weight I would definitely go for it. An 8" isn't too hard to carry outside and will offer better views.
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    Default Re: Undecided....Dob 6" or 8"???

    In time you will be able to add those higher grade eyepieces to the 8" scope. You can't add aperture to the 6".

    A 6" will show you plenty but as long as you can pick it up easily, buy the 8".

    Good luck with your decision.

    Alec.
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    Default Re: Undecided....Dob 6" or 8"???

    From one novice to another. Get the biggest aperture you can afford, and handle easily. My first scope was a dobson 8" Orion XT and I have never regretted it. I would have bought the 10" but it was too big for me to handle. Good luck
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    Default Re: Undecided....Dob 6" or 8"???

    As long as you are in good health and don't live on the top story of an apartment building that has no elevator, you will probably be fine with an eight inch Dob. For visual astronomy you want all the aperture you can afford and can easily transport. I bought a 12 inch collapsible Dob and I'm a minority around here because after years of observing I still haven't yet felt a big urge to upgrade for more aperture. If I had it all to do over again, I would do the same thing. I would rather spend my extra money on nice eyepieces (and other upgrades) than more telescopes.
    Name: Sam
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    Default Re: Undecided....Dob 6" or 8"???

    When it comes to dobs, buy the biggest one you can afford, carry, and store. There is no beginner dob, really. They all operate the same way. I'd get the 8" personally. But I have gainful employment, a young back, and a huge house to store it in. Just get the telescope you feel you will use the most.

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