Celestron vs Orion ED80s

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  • Member since
    May, 2005
Celestron vs Orion ED80s
Posted by Anonymous on Friday, August 13, 2004 2:11 PM
I'm planning to buy one of these but I'm not sure which one would be better.Zeldaboy says that he likes more the Celestron but I dont know anything more or any advantages of one over the other. The telescopes specs are the same ED80mm F/7.5. My main goal with one of these is astrophotography, maybe focal reduced a little.Any suggestion ,commentaries or opnions welcome as well as some links.Personally I like more the Celestron is cheaper and it appears to have a better "finish"
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    May, 2005
Posted by Anonymous on Friday, August 13, 2004 3:37 PM
i wouldnt have a 2nd thought on this one- the celestron 80ED redesign looks super with a much better looking focuser then the orion- not only that but the celestron comes with the limited lifetime warrantee- SHARP lookin telescope vs, orions 1 year or whatever it is, and its cheaper
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    May, 2005
Posted by Anonymous on Friday, August 13, 2004 3:40 PM
I had Orion ED80 and it was a nice scope. I didn't like the fact they used a 100mm tube, too big and heavy. The Celestron look to be a better design, the Orion seems like it was thrown together with whatever they had.

Either will give you good views.
  • Member since
    April, 2002
Posted by DougDob on Friday, August 13, 2004 4:07 PM
From what I've been able to find on the internet, the Celestron has a rack and pinion focuser while the Orion has a Crawford style focuser. The Celestron is heavier, but it has the 6x30 finderscope, 45° erect image diagonal and a 25mm 1.25" plossl included. Either one looks good to me. Get the Celestron and we'll have someone here that's had experience with one. Not a lot of reviews or info out there on the Celestron.
Big Smile DougDob Big Smile If at first you don't succeed, keep on sucking until you do succeed! - Curly Howard
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Posted by Anonymous on Friday, August 13, 2004 4:41 PM
The celestrons are sold with the 45 degree diagonals because they are marketed for terrestrial use (no idea why though, as it looks like a nice astro scope).

Everything that has been said is true. You get more accessories, a smaller tube but its heavier, a better looking and better made one, a better focuser, better warranty, and a better price. Thats more then enough to choose the celestron. I've heard of orion ED80s being out of collimation. While the celestron hasnt been too popular, i've yet to hear anything bad.

BTW, if you dont like f/7.5 (i know i wouldnt) then go to http://www.scopestuff.com/ss_tasct.htm and pick up that adaptor. That will allow you to use SCT threaded accessories on the refractor. Then pick up the meade or celestron focal reducer and you'll have a f/4.7 and a shorter focal length. Im doing the same thing, though all refractors are different and there is no way to tell what kind of field curvature or other problems you might get. With the extra celestron accessories you get you could sell them off, and if the reducer thing doesnt work, sell that off too, and you've broken even or made the ED80 cost you less.
  • Member since
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Posted by Anonymous on Friday, August 13, 2004 4:49 PM
Is there a good chance the Chinese ED lenses come from the same factory? Probally not a lot of factories in China doing ED. I like the smaller Celestron OTA, except the R& P Focuser, also a larger tube is better for baffeling.
DL Smallen
  • Member since
    May, 2005
Posted by Anonymous on Friday, August 13, 2004 5:36 PM
nothing really wrong with R@P focusers, its really the machining that counts- i havent seen the celestron ED yet, so i really cant comment on it, as long as it holds tight alignment with the objective though, would be good enough for me
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Posted by Anonymous on Friday, August 13, 2004 6:30 PM
Go over to cloudy nights and say stellarvue R&P focusers suck. You'll get a lot of angry comments. Not all R&P focusers are bad, and i wouldnt think the celestron is a top of the line, but its better then the sub-par crayford thats on the orion.

BTW, if they are the same lenses, then why not get the better body, more stuff, and spend less?
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    May, 2005
Posted by Anonymous on Friday, August 13, 2004 10:01 PM
That is why I thought. If it is the same more or less I'l go with the celestron. I disgarded the idea of going into "short focal lenght" astrophotgraphy with the Atlas, I'm now going with the Celestron advanced series Eq or a CG-5A. I just wont buy a mount that has a problem brand new!!!!The EQ-6 group in Yahoo has serious repotrs on problems with this mount , sad thought, it looked good.I like the CG-5A because
1-Has autoguider port
2-Goto
3-Less known problems
4-Fits perfectly the 80ED.
5-2 year warranty
Any comments?
  • Member since
    May, 2005
Posted by Anonymous on Friday, August 13, 2004 11:08 PM
Very good mount for that scope. I have the CG4 and I plan on mounting my ETX 90 as a guide scope and use a short tube 80 as the photoscope. I believe Celestron has the highest quality stuff among the three commercial grade astro titans: Meade, Celestron, Orion.

About the R&P focusers: R&P focusers are cheaper to make than crayford focusers, thus lots of cheaper department store telescopes use them, and from this they have gotten pretty bad reputations. As long as the R&P is of decent quality, it wont be any better or worse than a crayford. I doubt celestron will skimp so much on the focuser that it would perform poorly.

My biggest beef with the Orion is that its in a 100mm tube. However if the Celestron is heavier than I actually might be better off with the Orion as I dont want to stress out my mount too much. But I doubt either scope plus my ETX, camera and a couple accessories is going to cause problems for a CG 4.
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 2:24 AM
QUOTE: Originally posted by RogeZ

That is why I thought. If it is the same more or less I'l go with the celestron. I disgarded the idea of going into "short focal lenght" astrophotgraphy with the Atlas, I'm now going with the Celestron advanced series Eq or a CG-5A. I just wont buy a mount that has a problem brand new!!!!The EQ-6 group in Yahoo has serious repotrs on problems with this mount , sad thought, it looked good.I like the CG-5A because
1-Has autoguider port
2-Goto
3-Less known problems
4-Fits perfectly the 80ED.
5-2 year warranty
Any comments?


I've used my CG-5GT for a while now and it's performed flawlessly.
  • Member since
    April, 2002
Posted by DougDob on Saturday, August 14, 2004 2:30 AM
I'm afraid I have a different opinion of the Orion Crayford focuser than others. I wouldn't call it a great focuser but I also wouldn't call it sub-par either. All the reviews on the Cloudy Nights site had nothing but good things to say about them. I'm very happy with mine. Much smoother and finer than the rack and pinion focuser on my Discovery 8" dob.
Big Smile DougDob Big Smile If at first you don't succeed, keep on sucking until you do succeed! - Curly Howard
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 6:10 AM
If i was serious about Astro Photo, "I" wouldn't consider any Chinese Mount. The Vixen GP at the very least. Not many get expousures over 10 minutes with a Chinese mount.
DL Smallen
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 6:23 AM
Dsmalln: It's just a problem of budget, I'm a full-time student and I work +-25hoursevery weekend to buy my astronomy stuff. But I know I have a limit and as school is my priority I just can't spend more than that.What I dont know is if I shuold buy the mount with the 10" OTA for obsetrving and then buy the ED80. Would putting a telecope this big cause any problem to the mount(just for observing)???Any type of "hardware-breaking-overload???Any strain to the motors? The mount is suppose to be able to handle 35pounds of load.
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 7:35 AM
dsmalln, I'm not too familiar with the CG-5 GT, but it has an autoguider port so can't you get an autoguider to correct for periodic error?
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 8:34 AM
The 35 lb. limit is dependant on the distrubution of the load, the longer the tube the more weight away from center of the mount. The 10" Newt. is a lot for the CG5 in my 0pinon, it will have the shakes. An SCT of the same weight would be much better because of the center of gravity. Autoguiding is the only solution for Chinese mounts' i'm not willing to hunch over the mount for a long exposure, visual is all i care for till money comes my way.. As with all Chinese mounts a rebuild is always nessary for top performance, regrease, polisn the shafts, adjust the worm gears etc. I bought a factory refurbished LXD55 mount last month, it is three times smoother, much less gear slop after i rebuilt it. Budget is always a thought for all of us, we need more than we can afford for perfornance. Get what you can afford, use it and enjoy, after school make a bunch of money for Astro. fever! www.astronomyboy.com for help on the CG5.
DL Smallen
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 8:57 AM
You dont need 10 minutes exposures if your using a digital SLR camera. Most decent shots with the canon rebel are a bunch of 30 sec - 1 minute shots stacked. The better ones are 2 minutes.

As for a mount, the CG5 will be nice for you and will work great with that little refractor. BTW, a 10" reflector is pushing it IMHO just becuase its a big OTA. I'd recommend an 8" SN, SCT, or the reflector as they would all be nice scopes to use, and the SN and SCT being possible to use later on for better astrophotography.
  • Member since
    May, 2005
Posted by Anonymous on Saturday, August 14, 2004 9:15 AM
Just another question , what would be more sensitive, a camera like the sac8 or atik Atk-2hs or a SLr like a 300D. Which of then would let me shoot more objects???

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