EDGE 1100HD vs Meade 12 F10 ACF

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EDGE 1100HD vs Meade 12 F10 ACF


Post by DMouse » Sat Jun 29, 2019 4:55 pm

So, I used to own a second hand EDGE1100HD, and it had some mirror flop issues, so I sold it. I am currently using an f4 12 inch newt, and find using it visually a real pain. So I am considering going back to an SCT and wondered if anyone has an experience with the Meade ACF f10 12, compared to the EDGE1100HD? Out of the box, is mirror flop better with one than the other? I havent seen many Meades for sale second hand, and thats either because no one buys them or they dont sell them because they like them.
Are there any benefits from the Edge compared to the Meade?


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Post by JayTee » Sat Jun 29, 2019 9:43 pm

Hi Paul,

The Celestron Edge telescopes are supposed to have mirror locks on them to prevent mirror flop. Were the mirror locks not installed or non-functional on the Edge telescope that you used?

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Post by notFritzArgelander » Sat Jun 29, 2019 10:22 pm

I used to own a 9.25 Edge and had no issues whatsoever with mirror flop. In this and other regards it outperformed the plain vanilla 9.25 SCT. I'm considering as a large cat, either the 11" Edge or the Vixen VMC260L.
Scopes: Refractors: Orion ST80, SV ED80 A f7; Newtonians: Z12 f5; Catadioptrics: VMC110L, Intes MK66. EPs: KK Fujiyama Orthoscopics, 2x Vixen NPLs (40-6mm) and BCOs, Baader Mark IV zooms, TV Panoptics, Delos, Plossl 32-8mm. Mixed brand Masuyama/Astroplans Binoculars: Nikon Aculon 10x50, Celestron 15x70, Baader Maxbright. Mounts: Star Seeker III, Vixen Porta II, Celestron CG5, Orion Sirius EQG
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Post by AntennaGuy » Sat Jun 29, 2019 11:12 pm

I've been thinking/planning to someday buy a Celestron 11" Edge HD (to put in my future/someday observatory!) so I would like to learn more about this issue! So far, I have been leaning fairly heavily toward the Celestron 11" Edge HD rather than the competing Meade 12" LX200 ACF, specifically because: (1) there is less field curvature in the Edge HD, and my eyes aren't getting any younger, and (2) my fear that the electronics in Meade's mount just might fail catastrophically, like apparently many have done in the past, and then that Meade might abandon me (based on reports I've read with horror, on various astronomy forums) with no way to fix/service it if that happens. Reliability of hardware is a big deal! Now, if Meade were to offer a superior product warranty (say 5+ years, and preferably 10) I might consider the Meade. But at present, the Celestron warranty is actually the better one (2 yrs, vs 1 yr for Meade) and I also don't see people posting complaints of the Celestron mounts failing.
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
* Meade 323 refractor on a manual equatorial mount.
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Post by XCalRocketMan » Mon Jul 01, 2019 1:09 am

I own the EdgeHD11 and the optics are excellent. As for the mirror flop, there is a little, the mirror locks work but if you are planning AP with autofocusing you wont be able to use the locks. The flop is there but very small - manageable. It generally shows up after a meridian flip.
Scopes/Mounts Celestron EdgeHD-11 on HyperTuned CGEM-DX mount; William Optics GT102 on iOptron iEQ30 Pro; Criterion Dynamax-8 SCT
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Post by Mandrew » Mon Jan 20, 2020 6:38 am

Mirror flop seems to be inherently part of SCTs, look at the newer classical cassigrains if you can find some.
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Post by yobbo89 » Mon Jan 20, 2020 7:15 am

My 12 " Meade was put together poorly, lots of backlash on the mirror focuser, I had to retap the knob because it wasn't taped correctly, so I can only advise a hit or miss, other then that the performance is pretty good. I would bite the bullet and get a crayford focuser. My opinion is that celestron seems to have better qa and support and overall a slightly better product only based on online readings and having a meade 12"
scopes :gso/bintel f4 12"trust tube, bresser messier ar127s /skywatcher 10'' dob,meade 12'' f10 lx200 sct
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Post by Bigzmey » Mon Jan 20, 2020 10:12 pm

It seems that it is hit and miss with mirror flop. My 8" SCT (the newest model) has almost none, and older EdgeHD 9.25" has more. However, you can get external focuser and lock EdgeHD mirror.
Scopes: Stellarvue: SV102 ED F7; Celestron: 9.25" EdgeHD F10, 8" SCT F10, 6" SCT F10, Omni XLT 150R Achro F5, Onyx 80ED F6.3; Meade: 80ST Achro F5.
Mounts: ES: Twilight I; Bresser: EXOS2; SW: SkyTee2, AzGTi; UA: MicroStar.
Binos: Orion: Little Giant II 15x70, WorldView 10x50, Nikon: Action EX 8x40.
EPs: Pentax: XWs; TeleVue: Delites, Panoptic, Plossls & barlows; ES: 68s; Vixen: SLVs; Baader: BCOs, Aspherics, Mark IV; Meade: UWAs & Plossls.
Diagonals: Baader: BBHS silver mirror, Zeiss Spec T2 prism, Clicklock dielectric; TeleVue: Evebrite dielectric.
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