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AT80mm F/7 coming

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#51 Redbetter

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Posted 21 June 2019 - 03:59 AM

I wonder if the AT 80ED F/7 will be similar to the Lunt 80ED. My understanding is that the Lunt uses FK-61 glass as well?

I don't know the glass for the Lunt, but from using an Orion 110ED f/7 (probably made by Kunming?) with the equivalent of FPL-51, I would expect it to be a little short of visually apochromatic as compared to the Orion 80ED f/7.5 with FPL-53.  Yes, I know that 110 at f/7 is going to be worse, but even stopping it down to ~90mm (~f/8.6) didn't eliminate the color although it did make it less obvious.  Per my calcs that is about equivalent to what I would expect the AT 80ED to yield in the way of color, assuming both are well executed.

 

It still looks like a very good package and for an excellent price, but I would expect a small amount of color for my eye compared to the Orion 80ED (which I don't detect color in.)  The AT's focuser is likely to be better, and it wouldn't surprise me if the figure was as good or better than the Orion 80ED.  The extra baffling in the AT could provide some benefit as well.   It would make for an interesting comparison. 



#52 Spacefreak1974

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Posted 21 June 2019 - 08:45 AM

I don't know the glass for the Lunt, but from using an Orion 110ED f/7 (probably made by Kunming?) with the equivalent of FPL-51, I would expect it to be a little short of visually apochromatic as compared to the Orion 80ED f/7.5 with FPL-53.  Yes, I know that 110 at f/7 is going to be worse, but even stopping it down to ~90mm (~f/8.6) didn't eliminate the color although it did make it less obvious.  Per my calcs that is about equivalent to what I would expect the AT 80ED to yield in the way of color, assuming both are well executed.

 

It still looks like a very good package and for an excellent price, but I would expect a small amount of color for my eye compared to the Orion 80ED (which I don't detect color in.)  The AT's focuser is likely to be better, and it wouldn't surprise me if the figure was as good or better than the Orion 80ED.  The extra baffling in the AT could provide some benefit as well.   It would make for an interesting comparison. 

Yeah, i'm considering getting an Orion 80ED as a grab and go scope as i've heard great things about them. At $449 they are a good deal with the FPL-53

Jon



#53 Auburn80

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Posted 21 June 2019 - 10:03 AM

Yeah, i'm considering getting an Orion 80ED as a grab and go scope as i've heard great things about them. At $449 they are a good deal with the FPL-53
Jon


Don't forget rings and dove plate to make it apples to apples, sorta. Not sure about the dew shield.

#54 Spacefreak1974

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Posted 21 June 2019 - 11:20 AM

Don't forget rings and dove plate to make it apples to apples, sorta. Not sure about the dew shield.

Yep so add $60



#55 belgrade

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Posted 21 June 2019 - 03:57 PM

FWIW, Orion currently offers as a “second” ED80 for $359.99.

#56 NYJohn S

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Posted 21 June 2019 - 04:57 PM

The Orion doesn't have a 2 speed focuser so if you want to upgrade that your looking at another $150. That's what makes the AT80ED such a bargain. If it performs like the AT102ED you won't see a lot of CA. At F7 it can go a little wider too.

Edited by NYJohn S, 21 June 2019 - 05:47 PM.

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#57 CHASLX200

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Posted 21 June 2019 - 05:40 PM

What size rings does this scope take?  I have some 90mm rings.



#58 Redbetter

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Posted 21 June 2019 - 07:40 PM

What size rings does this scope take?  I have some 90mm rings.

You shouldn't need them if the description is up to date:  "split tube rings with detachable Vixen-style dovetail for installation on virtually any mount"



#59 belgrade

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Posted 21 June 2019 - 09:53 PM

You shouldn't need them if the description is up to date: "split tube rings with detachable Vixen-style dovetail for installation on virtually any mount"



#60 belgrade

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Posted 21 June 2019 - 09:57 PM

If the question refers to Orion 80ED, it comes with no rings. The Vixen-style dovetail is screwed into the tube directly and it’s rather small (short). You usually order it with a set of rings (and preferably longer dovetail), 100 mm by Orion (though one can go with any manufacturer’s rings of that size). Amazon charges $41.18 for the Orion’s set.

#61 johnpeter2

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Posted 03 October 2019 - 10:11 PM

October with our shipment of scopes.  Pricing is good and it will have the same focuser and quality as the 102.

 

Well, guess what month it is now (though it still feels like August here).  Any updates?

 

John


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#62 Jond105

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Posted 20 October 2019 - 01:58 PM

Patiently waiting......



#63 joseph07081

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Posted 20 October 2019 - 03:37 PM

Well, guess what month it is now (though it still feels like August here).  Any updates?

 

John

When asking about another scope that I have on order, I was told that there is a shipment due during October, but there was no ETA available. This was last week. I am assuming that the AT80 would be on that shipment, but I have no other information other than my own assumption.


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#64 mtminnesota

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Posted 27 October 2019 - 01:04 PM

I just ordered one of these, it sounds like a great grab and go scope for the money.  The website didn't give any indication of an ETA, nor did it have a picture.  Does anyone have theirs yet?



#65 Jond105

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Posted 27 October 2019 - 01:25 PM

I just ordered one of these, it sounds like a great grab and go scope for the money.  The website didn't give any indication of an ETA, nor did it have a picture.  Does anyone have theirs yet?

 

Awesome... they still aren’t out yet. Guess I’ll have to really think about pre ordering mine now before they already run out. 


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#66 mtminnesota

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Posted 27 October 2019 - 01:44 PM

Awesome... they still aren’t out yet. Guess I’ll have to really think about pre ordering mine now before they already run out. 

 

Probably not a bad idea.  If they perform well, it's a real bargain in my opinion.

 

I ordered an Astro-Tech Voyager 2 altazimuth mount with it.  I assume this would be an appropriate mount, what do you think?

 

https://www.astronom...muth-mount.html



#67 Jond105

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Posted 27 October 2019 - 01:59 PM

Probably not a bad idea.  If they perform well, it's a real bargain in my opinion.

 

I ordered an Astro-Tech Voyager 2 altazimuth mount with it.  I assume this would be an appropriate mount, what do you think?

 

https://www.astronom...muth-mount.html

Oh yeah, that will be fine for it, I’m debating on just getting another Versago ii to use with this one as well or possibly something different.  


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