80mm APO Refractors

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Which of these 80mm APO's is the best?

Poll ended at Fri Sep 26, 2008 10:43 pm

SkyWatcher Equinox 80
8
73%
Celestron Onyx 80
0
No votes
William Optics Zenithstar 80
0
No votes
Meade 5000 ED80
1
9%
Stellarvue SV80
2
18%
Vixen ED80SF
0
No votes
 
Total votes: 11

Earthshine
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80mm APO Refractors

Post by Earthshine »

I'm looking for an 80mm APO refractor price range £350-£550.
orion f6.3
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Post by orion f6.3 »

best what? weight, visual views, build quality, for CCD, easy of use, or as an overall scope. Orion
Deep and Dark.

Orion Optics 250mm f 6.3 Hi-Lux 1/4PV DOB
EQ6 GOTO c/w 250mm rings
Skywatcher Equinox ED 66 PRO
Star Raker Bino Mount
Nikon 8x32 SE
VIXEN LV Eyepieces 4mm 5mm 6mm 7mm 9mm 10mm 12mm 15mm 20mm 25mm
Earthshine
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Post by Earthshine »

orion f6.3 wrote:best what? weight, visual views, build quality, for CCD, easy of use, or as an overall scope. Orion
As long as its below 3kgs (which they all are) weight isn't a problem.

Basically, I mean from an optics quality point of view, for good visual images and possibly CCD. I'm asking which one would you buy out of these if you were given the choice. I'm open to any other suggestions.

:)
orion f6.3
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Post by orion f6.3 »

for good views and possibility of CCD the skywatcher, all that lets it down is the focuser locking ring, its a little harder to use than a WO type thumb screw, but as a cost point of view the skywatcher is hard to beat on any point. Orion
Deep and Dark.

Orion Optics 250mm f 6.3 Hi-Lux 1/4PV DOB
EQ6 GOTO c/w 250mm rings
Skywatcher Equinox ED 66 PRO
Star Raker Bino Mount
Nikon 8x32 SE
VIXEN LV Eyepieces 4mm 5mm 6mm 7mm 9mm 10mm 12mm 15mm 20mm 25mm
Earthshine
Posts: 136
Joined: Fri Dec 21, 2007 9:40 am
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Post by Earthshine »

orion f6.3 wrote:for good views and possibility of CCD the skywatcher, all that lets it down is the focuser locking ring, its a little harder to use than a WO type thumb screw, but as a cost point of view the skywatcher is hard to beat on any point. Orion
Thanks,

The SW seems to be the best choice so far :roll:
gsf1371
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Post by gsf1371 »

I only have experience with the EQ80. so can't really comment on the other scopes,
but the SW for me is let down by three lens spacers that intrude into the light path, causing dodgy star shapes in images. the focuser also shifts focus on mine when you tighten the focus lock :? My WO focuser wipes The floor with the SW.
The field isn't flat out to aps sensor size, but i don't think any of the other affordable 80 are either. It's fine for smaller sensors though.
On the plus side the CA is good, its reasonably fast and it looks great!

Lorenzo
explorer 200 heq5 synscan / Equinox 80 apo / Megrez 72FD and WO ff/fr type 111/st80 and 320mm f1900 planetary newt being built
350D
Atik 16ic
astsc1b/w,
toucam pro11
12 x 60 celestrons
tasco galaxsee 114mm and badder solar film solar 'scope
orion f6.3
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Post by orion f6.3 »

gsf1371 wrote:the SW for me is let down by three lens spacers that intrude into the light path, causing dodgy star shapes in images Lorenzo
What eyepieces were used when you got such a poor view? My EQ66 views are tight and in/out focus is as good as it gets, also what lenghts of eyepiece were used. Orion.
Deep and Dark.

Orion Optics 250mm f 6.3 Hi-Lux 1/4PV DOB
EQ6 GOTO c/w 250mm rings
Skywatcher Equinox ED 66 PRO
Star Raker Bino Mount
Nikon 8x32 SE
VIXEN LV Eyepieces 4mm 5mm 6mm 7mm 9mm 10mm 12mm 15mm 20mm 25mm
gsf1371
Posts: 206
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Location: surrey
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Post by gsf1371 »

Visual it's great, just let down when imaging.
The 66 is FPL51 isn't it? I think my M72 is 51 also. quite similar levels of colour, though the EQ80 just has it.

Lorenzo
explorer 200 heq5 synscan / Equinox 80 apo / Megrez 72FD and WO ff/fr type 111/st80 and 320mm f1900 planetary newt being built
350D
Atik 16ic
astsc1b/w,
toucam pro11
12 x 60 celestrons
tasco galaxsee 114mm and badder solar film solar 'scope
Richard Trilby
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Post by Richard Trilby »

I have the same dilemma: I was going to go for the Equinox, but I've seen two side-by-side reviews vs. the William Optics Megrez 72 (or clone) and in each case the smaller scope has come out on top. My other option is a WO Zenithstar II, which is slightly longer (f/6.8) but has a greater (80mm) aperture.

Has anyone used both of these WO scopes and, if so, which would you prefer as your only scope? In the short term I'd be using it visually but I think its ultimate destiny will be imaging.

Thanks,

Richard
astroeddie
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Post by astroeddie »

Having just received the SW 80mm F/500 Equinox scope, I cannot itirate how impressed with the little fella I am.
Came yesterday with its ali case and a RDF (paid extra for this).
Just been outside in a building wind to have a quick look through it.

The moon is pin sharp with a Meade 4000 26mm e/p and filled around 1/3 of the f.o.v. The mounting for the RDF on the OTA places the Moon and M45 bang on. Though the finder is not magnified. The 1:10 dual crayford focuser is very smooth throughout and is engraved with increments.

May I also note there's no sign of any spacers on the lense element and stars are pin sharp

My main goal with this scope is to mount with my C11 and use it for astrophotography. I am also awaiting the delivery of an Astrotrax TT320X which will will travel with me when I go to sea.

Eddie H
20x80 bins
127 SW Mk
Usual odds an sods
goodtime
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Post by goodtime »

A bit of info about the 'spacers':
ALL air-spaced lenses use spacers between the elements, newer mass-produced scopes are moving toward using a die-cut plastic ring whereas the older scopes (and still many new ones too) use 3 small metallic tabs. The tabs generally do not impinge on the optical path since the lens clear aperture is smaller than the actual lens diameter (to allow retention in the cell). If they do protrude too far maybe they're misplaced? Sometimes they can shift if the retention ring is loosened.
Andrew
Eyes, binoculars, CubePro, AT72ED, EOS 20Da, DSI II Pro,

There's no place like 127.0.0.1
Richard Trilby
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Post by Richard Trilby »

May I also note there's no sign of any spacers on the lens element and stars are pin sharp
Sounds like the Equinox is back on top. And thanks for the info again, goodtime. Does anyone know whether this is the way SW are shipping them now, or whether there are batches with/without spacers?
astroeddie
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Post by astroeddie »

guys,

Got my scope out in daylight today and it does have 3 spacers between the elements, just say notable. They donot cause and defractions in the viewing.

Sorry for any misunderstandings.

Eddie
20x80 bins
127 SW Mk
Usual odds an sods
Richard Trilby
Posts: 7
Joined: Sun Dec 07, 2008 2:22 pm
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Post by Richard Trilby »

Good to hear you're happy with your new setup. Looking forward to seeing them pics.
goodtime
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Location: 31° 46' 20" N, 106° 13' 54" W
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Post by goodtime »

I've been thinking of getting a small scope for astro-photography but money is extremely tight. What I have been thinking of is getting one of these. The price reduction makes it extremely appealing. Anyone know anything about it?
Andrew
Eyes, binoculars, CubePro, AT72ED, EOS 20Da, DSI II Pro,

There's no place like 127.0.0.1
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