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The AT72EDII is out!

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#451 gwlee

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Posted 04 October 2019 - 07:02 PM

I currently own an original AT72ED. After some recent scope purchases I am considering upgrading to the AT72EDii. This would be used for photography and some visual as well, giving me a wider field than my C80ED and my 102ED. I am considering selling my C80ED and my original AT72 to fund this. Is the quality increase of the new version worth the moves that I am considering? 

I replaced my AT72ED with an AT72ED2 for visual astronomy. After selling my AT72ED, the swap cost me about a $100, which provided the following benefits:

 

  • An R&P focuser that I like much better than the crayford that came on the AT72ED.
  • Rings and a base instead of a mounting foot that came on the AT72ED, making the scope easier to mount and balance. 
  • FPL53 glass rather than FPL51 glass, which should provide less chromatic aberration, but I don't see much difference in the views through the EP. 


#452 joseph07081

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Posted 04 October 2019 - 10:34 PM

I replaced my AT72ED with an AT72ED2 for visual astronomy. After selling my AT72ED, the swap cost me about a $100, which provided the following benefits:

  • An R&P focuser that I like much better than the crayford that came on the AT72ED.
  • Rings and a base instead of a mounting foot that came on the AT72ED, making the scope easier to mount and balance. 
  • FPL53 glass rather than FPL51 glass, which should provide less chromatic aberration, but I don't see much difference in the views through the EP. 
Thank you, these are some of the same points that have me moving toward the new version. I like that it will give me wider views than my C80 and be quite a bit smaller as well.

#453 The Luckster

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Posted 05 October 2019 - 06:43 PM

The AT72EDII is not part of the shipment now in Customs. The scopes now in Customs are the AT102ED and the AT60ED. The AT72EDII will be coming in October, along with all of the EDT scopes (80, 115, 130, 152) and the smaller sibling of the 102ED an 80mm version. The original AT72 has not been in stock or on our website for many months.

 

It's October!  snoopy2.gif  It's October!  snoopy2.gif   It's October!  snoopy2.gif 

 

I am patiently waiting.

 

CS

 

jason



#454 LMO

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Posted 06 October 2019 - 01:40 PM

... I had the ED and (still have) the EDII versions and had a chance to compare the two. ...

 

Since I had both versions for a while I had a chance to compare the two.  Optically, I could not differentiate between the two.  Both showed the same amount of color fringing (not objectionable to me), and both showed the same excellent image using my 3mm Radian.

 

..

Kim

 

 

I replaced my AT72ED with an AT72ED2 for visual astronomy. ..

 

[The AT72ED2 has] FPL53 glass rather than FPL51 glass, which should provide less chromatic aberration, but I don't see much difference in the views through the EP. 

 

My thanks to Kim K and gwlee for direct comparisons between the original AT72ED and the current AD72EDII, comparisons I have hoped to see for some time.

 

There seems agreement that the newer 'II' has better mechanical features, but the similarity of actual visual performance between the two is consistent with the popularity of the original 72ED and with its retained value on the used market.

 

The original 72ED also came in various colors, many very appealing.  The handsome black version appeared to be identical to the Orion EON 72ED, which Orion included in a group with two of its premier, highly regarded FPL-53-based doublets -- the EON 80 f6.2 and EON 120 f7.5 (= SW Equinox 120 f7.5).  All three had similar black livery, all three appear to be of Long Perng (/Synta) origin, and all three were described in a combined manual still available at <https://www.telescop...29326_07-10.pdf>.  This can be regarded as Orion's endorsement of the quality of the original 72ED.

 

   Larry

 

Edited 10/06/2019 to underscore Orion's positioning of the original 72ED.


Edited by LMO, 06 October 2019 - 06:00 PM.


#455 The Luckster

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Posted 14 October 2019 - 07:56 PM

I noticed the Astronomics site list the 72EDII as "in stock", does this mean back-orders will be shipped soon?

 

Thank you.

 

Eagerly awaiting my AT72EDII...

 

CS

 

jason


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#456 joseph07081

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Posted 14 October 2019 - 08:09 PM

I noticed the Astronomics site list the 72EDII as "in stock", does this mean back-orders will be shipped soon?

 

Thank you.

 

Eagerly awaiting my AT72EDII...

 

CS

 

jason

That is funny, I just got an email response from Astronomics this morning saying they had a shipment due in this month, but did not have a firm date yet. I had another thread open here over the weekend because I was curious when they would be in stock. 

 

Time to get an order in.


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#457 joseph07081

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Posted 15 October 2019 - 11:38 AM

I noticed the Astronomics site list the 72EDII as "in stock", does this mean back-orders will be shipped soon?

 

Thank you.

 

Eagerly awaiting my AT72EDII...

 

CS

 

jason

Jason

 

After I saw your post, I checked and the website did show in stock for the rest of the night, but this morning reverted back to "more on the way".

I sent an email to Astronomics and the response this morning said that they were expected this month, but ETA was not yet known.

The email also mentioned that there would be plenty of AT72's in this shipment.

 

I decided not to wait any longer and placed my order for one.


Edited by joseph07081, 15 October 2019 - 11:38 AM.

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#458 The Luckster

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Posted 15 October 2019 - 05:43 PM

Jason

 

After I saw your post, I checked and the website did show in stock for the rest of the night, but this morning reverted back to "more on the way".

I sent an email to Astronomics and the response this morning said that they were expected this month, but ETA was not yet known.

The email also mentioned that there would be plenty of AT72's in this shipment.

 

I decided not to wait any longer and placed my order for one.

 

Copy that, Joe. 

 

I've already payed for mine a few months back, so I'm just waiting for that doorbell to ring...

 

CS

 

jason



#459 The Luckster

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Posted 10 December 2019 - 04:13 PM

I see that Astronomics is listing the AT72EDII in stock, does this mean shipments will begin when practical?

 

CS

 

jason



#460 TNmike

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Posted 10 December 2019 - 04:56 PM

They also show the AT80ED in stock, so I am thinking they have them or are just down the road, and they can start processing the orders so as to ship them as quick as possible to waiting customers who are (kinda) patiently waiting.


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#461 The Luckster

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Posted 14 January 2020 - 10:14 PM

In stock and ready to ship!!!

 

waytogo.gif

 

CS

 

jason


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#462 LPA

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Posted 16 January 2020 - 06:05 PM

Mine arrived this morning. Pic and details are here:

 

https://www.cloudyni...-5#entry9920441

 

Larry


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#463 The Luckster

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Posted 16 January 2020 - 09:25 PM

Mine arrived this morning. Pic and details are here:

 

https://www.cloudyni...-5#entry9920441

 

Larry

That's great!  Did you get an email notice of shipment?

 

CS

 

jason



#464 LPA

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Posted 16 January 2020 - 10:50 PM

That's great!  Did you get an email notice of shipment?

 

CS

 

jason

Yes, yesterday, but I live 3 hours from Norman so a short trip for FedEx.


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#465 The Luckster

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Posted 16 January 2020 - 11:04 PM

Yes, yesterday, but I live 3 hours from Norman so a short trip for FedEx.

Copy.  I'm waiting eagerly...

 

CS
 

jason



#466 The Luckster

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Posted 18 January 2020 - 10:10 PM

It has arrived...

 

jason



#467 The Luckster

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Posted 19 January 2020 - 12:45 PM

gallery_274302_12235_257216.jpg

 

 

 

gallery_274302_12235_210405.jpg

 

Very robust piece of optics, I am highly looking forward to first light...

 

As pictured, weighed in at 4lbs 11.1oz

 

CS

 

jason


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#468 ltj

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Posted 19 January 2020 - 12:56 PM

Been waiting patiently (not) for months and now it's here! It looks great! Now I just have to get through the week of snow and clouds. Congrats to all who are doing the same.

Clear skies!

Jeff


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#469 The Luckster

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Posted 26 January 2020 - 07:52 PM

Love the AT72EDII, it easily relegated my 80 Short Tube to the "won't be needing this anymore" list.  I was considering jumping on the AT 80ED band-wagon, but I don't think I would gain enough to justify the purchase...

 

The AT72EDII rocks!

 

 

CS

 

jason

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#470 howardcano

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Posted 22 May 2020 - 02:31 PM

I am considering purchasing the AT72EDII mainly for low-power, richest-field observing with 2 inch eyepieces (ES 40mm 68degree and Panoptic 35).  Can one of you lucky owners of this scope give me an idea of the size of the fully-illuminated field when using a typical diagonal?  (My diagonal has a 46mm clear aperture and an optical length of about 100mm.)

 

EDIT:  Alternatively, if someone knows the length of the focuser drawtube and its ID at the front, I can calculate the field size.


Edited by howardcano, 22 May 2020 - 02:37 PM.


#471 gwlee

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Posted 23 May 2020 - 10:30 AM

I am considering purchasing the AT72EDII mainly for low-power, richest-field observing with 2 inch eyepieces (ES 40mm 68degree and Panoptic 35).  Can one of you lucky owners of this scope give me an idea of the size of the fully-illuminated field when using a typical diagonal?  (My diagonal has a 46mm clear aperture and an optical length of about 100mm.)

 

EDIT:  Alternatively, if someone knows the length of the focuser drawtube and its ID at the front, I can calculate the field size.

I found a 35 Pan is heavier and bulkier than I like for use with this scope, it’s difficult balance with the stock vixen rail, and  it shows a lot of geometric distortion, but I didn’t notice a field illumination problem with a 2” TV Everbrite diagonal. I had to order an 8” rail from Astronomics to get it to balance with my mounts. 

 

Have since settled on 27 Pan for this scope that seems to be a better match in physical size for the AT72ED2, but still needs longer rail to balance on my mounts. It gives a a 4 degree field at 16x with a 4.5mm exit pupil. Have also settled on a 2” Baader AMICI prism diagonal with a 27mm field stop that’s fine for the 27 Pan, but not enough for the 35 Pan. 

 

However, the 35 Pan gives a 5.1 degree field at 12x with 5.8mm exit pupil. At night, looking at stars, the geometric distortion isn’t obvious,  but it’s very obvious for terrestrial viewing during the day. 


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#472 howardcano

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Posted 23 May 2020 - 12:19 PM

Many thanks for your input!

 

I have longer rails to get balance with heavy eyepieces.  I would not be using anything much below a 30mm eyepiece too often, as I would simply move over to my SV102 ED scope.  The AT72EDII would be for wider views than I can get with the 102mm.

 

The Astronomics web site says it has a 2" focuser, but I'm wondering if it's actually got a 2.5" ID on the drawtube, since the focuser appears to be identical to the one on my SV102 (as nearly as I can see from the photos).

 

I'd appreciate it if you could check the focuser ID for me.  I'm guessing that you can do so by just unthreading the visual back instead of removing the focuser from the tube.  When I do this on my SV102, I measure about 2.3".  That would be about 2.5" ID for the tube, as the baffles appear to be about 0.15" high.



#473 gwlee

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Posted 23 May 2020 - 12:43 PM

Many thanks for your input!

 

I'd appreciate it if you could check the focuser ID for me.  I'm guessing that you can do so by just unthreading the visual back instead of removing the focuser from the tube.  When I do this on my SV102, I measure about 2.3".  That would be about 2.5" ID for the tube, as the baffles appear to be about 0.15" high.

You are welcome. I will try to measure it when I get home this evening.


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#474 The Luckster

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Posted 23 May 2020 - 10:39 PM

Can't measure anything right now, mine is cooled down and ready to rock...wink.gif

 

CSS

 

jason


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#475 gwlee

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Posted 24 May 2020 - 11:47 AM

Many thanks for your input!

 

I'd appreciate it if you could check the focuser ID for me.  I'm guessing that you can do so by just unthreading the visual back instead of removing the focuser from the tube.  When I do this on my SV102, I measure about 2.3".  That would be about 2.5" ID for the tube, as the baffles appear to be about 0.15" high.

I removed the 2” diagonal last night to check, but can’t say for sure. Measuring the ID of the focuser tube appears to require removing the camera angle adjustor, replacing it, and readjusting it, which I don’t know how to do, so I didn’t try it. I felt inside the focuser tube, and it’s somewhat larger than two inches, but can’t say how much.

 

I checked the AT website, and it clearly says the AT72ED2 has a 2-inch focuser. I am reasonably confident that AT would be touting a 2.5” focuser for AP if that was the case.

 

I inspected another scope that has a 2.5” FeatherTouch with my calibrated index finger. It too has a focuser tube that’s also somewhat larger than 2.0,” but it doesn’t feel much different than the AT72ED2. 

 

If I can find instructions for removing, replacing, and readjusting the CAA, I will remove it and measure the ID of the focuser tube. 
 


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