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    ahmed.aly's Avatar
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    Default Zenithstar 61 or Redcat 51?

    I have Nikon D850 & iOptron SkyGuider Pro (with iPolar), will also get the Optolong L-eNhance filter.

    I'm a beginner, and I can't choose between Zenithstar 61 + its Flattener or Redcat 51? Which one would you choose and why?

    Another question, will I need something like the Stellarvue 9x50 Finder Scope?

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    seigell's Avatar
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    Default Re: Zenithstar 61 or Redcat 51?

    Both are nice Widefield Imaging scopes - especially with a Full-Frame DSLR. Both claim to produce Flat Fields across at least APS-C Sensors, so you will likely find some Aberrations around the edges.

    Either will, with the honking big D850 on the rear, push the realistic carrying capacity of the SkyGuider Pro. (My StarAdventurer with Counterweight realistically topped out with my T2i + Nikon 180APO Prime. That's a little lighter than the RedCat 51...)

    There are a few things that you can do to improve the performance of the SkyGuider Pro:
    1) Forego the Ballhead Mount - You can point at the full sky using just the RA and Dec Axis, and shave both Weight and Flexing/Droop
    2) Buy the iOptron 1.25" Tripod - it's 2-segment Steel Legs and Solid Head are going to be SO MUCH BEEFIER than anything you can find in the Photographic Tripod market
    3) Consider adding a small AutoGuider - the SkyGuider is only Motorized in RA, but smoothing out the Periodic Error is a real Bonus (and the AutoGuider can be used as your ersatz FinderScope even though either Imaging Scope and LiveView on the D850 will also do that job at the expense of adding some heat)
    ES AR152 / ES 80ED Apo / Orion 8in F/3.9 / C9.25-SCT / C6-SCT / C10-NGT / AT6RC / ST-80 / AstroView 90 / Meade 6000 APO 115mm
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    Dark Skies in SW CO when I can get there, and badly light polluted backyard when I can't... (Currently Self-Exiled to Muggy Central Florida...)



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