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Screamin' Good Deal: AT92

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#26 stevew

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Posted 10 March 2020 - 08:24 PM

If this scope is the TMB92 design, can I assume it's an FPL53 triplet?

I have a TMB130 I purchased new from Astronomics and it's a great performer.


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#27 Don W

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Posted 10 March 2020 - 10:32 PM

That's what the ads say! It's a refined TMB design.



#28 Auburn80

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Posted 11 March 2020 - 09:12 AM

If this scope is the TMB92 design, can I assume it's an FPL53 triplet?
I have a TMB130 I purchased new from Astronomics and it's a great performer.


Modified design yes; better check with Mike re: the glass.

#29 johnsoda

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Posted 11 March 2020 - 09:17 AM

Please note that the length of this sale depends on the fortunes of a certain college basketball team. That may seem off-topic, but it’s not. See the Astronomics website for details.

#30 aa6ww

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Posted 11 March 2020 - 10:46 AM

I sold my TV-85 and AT-102 for the AT-92. This was last year. Its been my most used scope since I purchased it, and has had plenty of use on random nights of clear skies all winter. Now that the weather is improving, my larger scopes should get used more but now I will be using the AT-92 as a piggy back scope on my C11, so it should still get used.

Last year, I sold 14 scopes, whew! I decided I was not going to have any more overlaps in aperture and only keep or purchase telescopes with exceptional optics.




...Ralph
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#31 Sarkikos

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Posted 11 March 2020 - 07:30 PM

Which Synta/Vixen style finder base will attach to the AT92?  I've got to have a finder - at least one - on a telescope.   These aren't binoculars, you know.  :grin:

 

Mike


Edited by Sarkikos, 11 March 2020 - 07:30 PM.


#32 Don W

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Posted 11 March 2020 - 08:09 PM

You can buy a standard vixen shoe on the focuser.

 

https://www.astronom...nting-shoe.html


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#33 stevew

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Posted 11 March 2020 - 08:10 PM

Modified design yes; better check with Mike re: the glass.

Well the TMB92 was an FPL53 triplet, so if the AT92 is the Thomas Back design I would have to assume the AT02 would also be an FPL53 triplet ....



#34 Don W

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Posted 11 March 2020 - 08:40 PM

This information is all explained on the Astronomics site in their ads.



#35 desertlens

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Posted 11 March 2020 - 11:40 PM

The objective ring on my AT92 says FPL-53. As I recall, Michael said this was in error and that the actual ED glass was FCD-100... so, roughly the same low dispersion properties. Apparently the rings were labelled before the ED glass was finalized.


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#36 Sarkikos

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Posted 12 March 2020 - 05:50 AM

You can buy a standard vixen shoe on the focuser.

 

https://www.astronom...nting-shoe.html

Thanks.  Will the screws that are supplied with this shoe be too long for the AT92?  Or will I need to replace them with shorter screws?  Maybe the screws already on the AT92 would work with this shoe?

 

MIke



#37 Don W

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Posted 12 March 2020 - 11:04 AM

I'm waiting for my AT92 so can't answer.


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#38 Don W

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Posted 13 March 2020 - 04:01 PM

Say Hello to my NEW little friend. My AT92 came today. I'm a bit surprised to see that the front ring still says FPL53 instead of FCD-100. My OTA is a nice flat white. I was expecting gray. That aside, it's flipping gorgeous! It's on my AZ-GTi mount in equatorial mode. The tripod is a Meade 884 with a hole drilled to mount the AZ mount. The tripod has a built in wedge which is fine for a small mount.

 

89822954_3114741818538512_7528580527423488000_n.jpg


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#39 Spikey131

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Posted 13 March 2020 - 04:42 PM

Wish I had $1500 burning a hole in my pocket that I haven’t already spent.  Twice.....lol.gif


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#40 johnsoda

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Posted 13 March 2020 - 05:32 PM

The email advertising this sale said it would last as long as the Oklahoma Sooners were in the NCAA Tournament.  So does it end now or go on indefinitely?



#41 WillieM96

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Posted 14 March 2020 - 10:54 PM

Mine just arrived today.  It's my first refractor and I can't wait to do some astrophotography with it!  Of course, there's still the clouds to deal with...and disease.


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#42 Astrojedi

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Posted 14 March 2020 - 11:45 PM

Say Hello to my NEW little friend. My AT92 came today. I'm a bit surprised to see that the front ring still says FPL53 instead of FCD-100. My OTA is a nice flat white. I was expecting gray. That aside, it's flipping gorgeous! It's on my AZ-GTi mount in equatorial mode. The tripod is a Meade 884 with a hole drilled to mount the AZ mount. The tripod has a built in wedge which is fine for a small mount.

 

attachicon.gif89822954_3114741818538512_7528580527423488000_n.jpg

Don,

Which tripod are you using?



#43 Don W

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Posted 15 March 2020 - 10:56 AM

Meade 884. Not sure it's going to work out. Although it has a built in wedge system, the top is too big to allow just bolting the AZ to it. The scope hits it. Back to the drawing board. It works great in Alt/Az mode, very sturdy. Here's the latest equatorial iteration. I think it shows promise!

 

89905740_3118783458134348_5281608716540444672_n.jpg


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#44 Astronomics

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Posted 15 March 2020 - 01:48 PM

The email advertising this sale said it would last as long as the Oklahoma Sooners were in the NCAA Tournament.  So does it end now or go on indefinitely?

I am going to treat it like we made it to the sweet 16, so probably another 10 days unless we sell out of current inventory.  If that happens it will be 9-12 months for the next run to be produced.


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#45 johnsoda

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Posted 15 March 2020 - 01:54 PM

I am going to treat it like we made it to the sweet 16, so probably another 10 days unless we sell out of current inventory.  If that happens it will be 9-12 months for the next run to be produced.

Thanks. My post was kind of tongue-in-cheek.  The best-laid plans...


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#46 Astronomics

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Posted 15 March 2020 - 02:47 PM

Yeah, lay something out that is different and an apocalyptic  world wide issue comes and ruins my time to shine...lol


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#47 ChrisWhite

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Posted 15 March 2020 - 10:04 PM

Wish it had a threaded drawtube. I definitely considered it, but will only use threaded connections. :-(

#48 dougspeterson

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Posted 16 March 2020 - 06:22 AM

I just pulled the trigger.

FCD100 is essentially equivalent to fpl53.

I had one of the earlier TMB versions, at F5.5, excellent, a small amount of color, did not care for the oversized overpriced 3” feathertouch, will prefer the right sized chinese 2.5” which if the same or similar to the current AT102 is excellent.

 

Mike is this a contact or airspaced triplet?


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#49 Astrojedi

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Posted 16 March 2020 - 11:49 AM

I just pulled the trigger.

FCD100 is essentially equivalent to fpl53.

I had one of the earlier TMB versions, at F5.5, excellent, a small amount of color, did not care for the oversized overpriced 3” feathertouch, will prefer the right sized chinese 2.5” which if the same or similar to the current AT102 is excellent.

 

Mike is this a contact or airspaced triplet?

This one has no color that I can tell even at high magnification. Really surprised at the superb optical performance despite the fast optics. Besides the limited depth of field in focusing which is the consequence of fast lenses I cannot really find much else to fault about the OTA. Mechanics are superb as well.

 

This is a really unique scope - there is no other scope on the market which offers these attributes.


Edited by Astrojedi, 16 March 2020 - 11:50 AM.

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#50 scooke

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Posted 16 March 2020 - 04:46 PM

Wish it had a threaded drawtube. I definitely considered it, but will only use threaded connections. :-(

Remove the eyepiece holder and the drawtube is threaded.  You can thread on a flattener/OAG/Camera and you're good to go.


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