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My 80ED arrived!

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#1 Bill Grass

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Posted 05 November 2003 - 10:42 PM

My Orion 80mm ED refractor arrived today! Here are my initial impressions.

The appearance is almost identical to my 100mm SkyView Pro refractor. The 100's tube rings fit the 80 perfectly, so I was able to pop the ED on my SkyView Pro mount. The dew shield fits around the objective perfectly; the 100's dew shield never quite made it all the way against the lens cell. But anyway, on to the important stuff!

I popped in my little collimation eyepiece, and as expected, the ED was out of collimation. (If you don't know by now, this scope doesn't have an adjustable lens cell.) I simply loosened the 3 screws (very slightly) attaching the focuser to the tube, wiggled the focuser until the collimation was right, and re-tightened the screws. I didn't have to use shims or anything. When I looked down the tube from the objective end just to double-check, everything appeared concentric.

Once it got dark, I brought everything outside. It's remarkable that the sky was mostly clear! There were a few clouds, but nothing that interfered with observing. I looked at Mars, and MAN was the seeing poor!! After the scope cooled down a bit & the seeing improved, I began checking out Mars with different magnifications. First of all, I didn't see a trace of chromatic aberration. I was shocked at the difference between what I saw & what I had been seeing through the 100mm achro! My top magnification is 200x; I used a University Optics 6mm Ortho with a Celestron Ultima Barlow. Mars appeared a whole lot sharper than it had through the 100mm at 200x.

I also took a look at Vega. At high powers, I did see a very, very slight trace of false color. But it certainly wasn't anything to complain about.

The Moon looked spectacular! Again, absolutely no Hendrix effect (purple haze) around it.

The Double-Double split up very cleanly. I could even make out all 4 stars at around 54x. Albireo looked beautiful, and so did Gamma Andromedae.

I glanced at the Double Cluster, but the Moon was way too bright to really see much. I also took a quick peek at the Ring Nebula. I was surprised at how well I could see it, considering I was using an 80mm instrument under a nearly full Moon! But it was pretty faint. I can't wait to see these DSOs when the Moon isn't around.

Finally, I LOVE the Crayford focuser! This thing is so smooth it seems like you could almost breathe on it to adjust the focus.

I give this little scope an A+. I can't wait to see Saturn & Jupiter through it! :jump:

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#2 Tom T

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Posted 05 November 2003 - 10:54 PM

Hey Bill,

Congrats! Sounds like you are a happy camper! Welcome to the ED80 club.

FWIW, I'll agree completely - these are *very* nice little scopes, OUTSTANDING values for the money.

What are you doing for a case?

Tom T.

#3 Bill Grass

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Posted 05 November 2003 - 11:39 PM

Thanks, Tom!

I haven't really thought too much about a case for it. I may end up getting one of those soft, padded bags from Orion. What about you?

#4 Tom T

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Posted 06 November 2003 - 11:05 AM

Bill, I found the StellarVue c5 case to be a nearly perfect fit providing you slide the dew shield off and store it in one of the large holes.

Tom T.

#5 Bill Grass

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Posted 06 November 2003 - 11:17 AM

Cool! Thanks! I'll definitely look into that.

#6 Guest_**DONOTDELETE**_*

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Posted 06 November 2003 - 05:06 PM

Folks, i don't know if i am the first owner of an ED80 over here in Scotland UK but i can agree with folks comments. I used to own a TV 85, and can say optically my ED80 performs very very close. My views of the Moon have been color free and tack sharp. My only grumble is that my focuser back end was moving about and needed all three screws tightned. When i star tested on Vega i see a near perfect diffraction pattern so i must have done a reasonable job at tightening my focuser. When i look at the lens i can notice a few specks of metal (from the tube finish?), which are between the elements. I guess the price of scope means a lesser finish, but these specks don't effect the performance in way. I'm using an AZ-3 Alt Az which is great apart from the weight of the OTA and diagonal making the altitude drift slowly. I've read that this can be solved by tightening the bolt.

Regards,
Craig from Rainy Scotland.

#7 Guest_**DONOTDELETE**_*

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Posted 09 November 2003 - 05:56 PM

Has anyone compar the Orion 80ED to the StellarVue AT1010? I've heard very good things about both, with the reviews going something like this: Optics/mechanics on the Orion rate at 9.0/8.0, while the optics/mechanics on the StellarVue are more like 8.0/9.0

Can anyone recommend a good equatorial head for these scopes? I say head because I'm rather skilled with woodworking and I intend to make a tripod from rock-hard maple to use with it.

#8 Tom T

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Posted 10 November 2003 - 10:59 AM

David,

The ED80 is an APO (and a pretty decent one at that). The AT1010 is an Achro. It's a whole different world - optically speaking, and numerical comparisions between an achro and an apo are misleading (IMO).

But to answer you question, yes, there is a post over in the ed80 yahoo group where someone compares the ED80 to the SV.

Tom T.

#9 Guest_**DONOTDELETE**_*

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Posted 10 November 2003 - 06:35 PM

Tom, I can't find the ed80 yahoogroup you have spoken of. Do you have a url for it. Or, do you have a title for it? Otto

#10 Tom T

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Posted 10 November 2003 - 07:00 PM

http://groups.yahoo....group/Orion_ED/

Sorry, it's the Orion ED group...

Tom T.


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