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Thread: Ten inch or three inch

  1. #1
    wb5hqh's Avatar
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    Default Ten inch or three inch



    Using the same mount, the Orion Atlas GoTo, and same USB camera, I would like your choice between just the Sky-Watcher ProED 80mm Doublet APO Refractor Telescope and Atlas 10 EQ-G reflector for each of these tasks:

    (A) casual viewing.
    (B) Video
    (C) Photography.
    Sky-Watcher ProED 80mm Doublet APO Refractor, Camera Pentax K7

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    Default Re: Ten inch or three inch

    The Doublet. However, it is not a true APO. It is almost certainly an ED (Extra Dispersion) objective, which is better than a standard achromat but not as good as a triplet APO. For casual viewing, the instrument quality and shorter focal length will make finding things for (A) easier. As for (C) I find more than enough to photograph without using a telescope.

    The only minus is (B). The reflector will perform better on the Moon and planets and will beat the ED 'scope for visual use.

    I bet I'll be in a minority of one here but I would go for the refractor.
    dagadget likes this.
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    Default Re: Ten inch or three inch

    I do not do either of your first requirements but prefer refractors for viewing.
    Enjoy whichever you choose
    dagadget likes this.
    Refractors: Antares 105 f/15, Bresser 102XL f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, Vixen SD115s f/7.7
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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind.

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    Default Re: Ten inch or three inch

    I prefer my refractor for viewing, and attempting to do video (I am not an astro-imager).
    Just look at my sig!

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    Default Re: Ten inch or three inch

    You are looking at three different objectives with three different sets of requirements.

    a) Visual Observation = 10" Newtonian/Reflector
    b) Video = Neither of these. Video is used to image the Moon, planets and other Solar System objects. You want a long focal length scope like a MCT/MAK or SCT and to add a Barlow to it.
    c) AstroPhotography = 80mm Doublet APO Refractor

    Notes:
    The 10" Newtonian/Reflector is not an Astrograph, so it probably will not come into focus with a camera without modification.
    The 80mm is only a Doublet so it will probably have some CA. It would be my second choice for Visual Observing.
    sketrip likes this.
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    Default Re: Ten inch or three inch

    To this point I have been a viewing only person and I am going to get my socks knocked off my FracZilla probably tomorrow night. The Triplet Refractor would be your best bet at 3 inch 80. But you are getting an ED and if well corrected it will work fine.
    Celestron 4 1/2 114 mm Newtonian Telescope 910 F/L GT Mount AKA Frankenscope.
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    Default Re: Ten inch or three inch

    Save a little more money and get an 80-102 mm APO. I have the Skywatcher 120 Pro and 100 Esprit and love both. I hated the balancing of the newt reflectors and overall size of an empty scope.
    But if you are sticking to the two I would go with the 80mm easily, since my love for the 120 Pro keeps the scope on regular use and even not being a true APO is a solid scope with great views..
    Skywatcher Esprit 100, Skywatcher Pro 120ED, Meade ETX90, Celestron GT 120mm, Celestron C8, Astromania 60mm Guidescope, Celestron AVX Mount, Orion Atlas Mount, Explore Scientific Twilight 1, QSI 683 WSG, Astrodon Filters(LRGB and 3nm), Canon T3i & XSi(XSi is a full mod), ZWO ASI 120MC & ZWO ASI 120MM-S (with LRGB Filters) as well as for the daytime a Lunt 35mm Ha Solar Telescope, Lunt 1.25 Hershel Wedge, and White Light Filters

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    Default Re: Ten inch or three inch

    I asked about of these two scopes which is the best for these tasks. One of these days someone will read one of my questions with a literal side of their brain and say this one is better and not what other scope would be best. If I had unlimited wealth that Ferraii would be in my parking space instead of the Porsche er really the GMC Canyon pickup I have. Simple answers help the newer guy better. Eventually I may get that $4000 scope but not now. Right now I just want to look and maybe stack a video to make a pretty picture. That is it.
    Sky-Watcher ProED 80mm Doublet APO Refractor, Camera Pentax K7

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    Default Re: Ten inch or three inch

    You are looking at three different tasks, that have three different sets of equipment requirements.
    Neither one of these two scopes is going to be good at all 3 of these tasks.
    There is no one good scope out there to do all three of these tasks at any price!

    a) Visual Observation = 10" Newtonian/Reflector (the Atlas 10 EQ-G reflector)
    b) Video = Neither of these.
    c) AstroPhotography = 80mm Doublet APO Refractor (Sky-Watcher ProED 80mm Doublet APO Refractor) This assumes you mean Deep Sky Object AstroPhotography.

    There are scopes that will be ideal for one task and marginal at others. So you need to decide what is you number one priority.
    Gabby76 likes this.
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    Default Re: Ten inch or three inch

    Your 80mm refractor will let you do that already.
    j.gardavsky likes this.
    Refractors: Antares 105 f/15, Bresser 102XL f/13.2, Celestron 102 f/6.5, 2-150 f/8, Stellarvue NHNG 80 f/6.9, TAL 100RS f/10, TS 102 f/11, Vixen SD115s f/7.7
    Mounts: Manfrotto 028B/ 055PRO, Celestron SLT, Celestron CG-5/ Argo Navis, Stellarvue M2C, Vixen SXP Binoculars: Celestron Eyepieces: A-Z

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    The weakest link in the optical chain is the large nut located directly behind the eyepiece/ camera. - Gabrielle
    Ya gotta keep this Apo/Achro thing in some balance of perspective. Apos are awesome, but long focus Achros aren't that far behind them - Siriusandthepup (CN)
    Refractors kick arse precisely because they don't hide behind excuses. That is, they have no obstructions to hide behind.

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  11. The Following User Says Thank You to Gabby76 For This Useful Post:

    j.gardavsky (11-10-2018)

 

 
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