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Best 90mm APO

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#26 gnowellsct

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Posted 02 November 2019 - 08:24 PM

Great setup! What is that mount/tripod?

That's an Avalon T-pod, I think it's the 130 (I should know, but I don't).  Edit:  It's the 110.   There are two other sizes the 90 and 110   130 (tripod)

 

The mount itself is a discmount DM-6.  I was told I'd only need the DM4 (cheaper and lighter duty) but insofar as I am very intolerant of mount vibrations I bought "more than was recommended" which is usually a good thing to do.  

 

It's a very fast setup and breakdown, ten minutes each way, and ideal for nights when the forecast or the moon leaves only one or two hours of viewing.

 

But the deluxe viewing is on a GEM.    Here the 92 is riding on top of the GT130, which has its lens cap on, because the scopes take turns on solar.  -GN

 

20190425_180731-1_resized.jpg


Edited by gnowellsct, 02 November 2019 - 08:28 PM.


#27 areyoukiddingme

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Posted 02 November 2019 - 09:43 PM

Yeah just ring em up you'll have one by the end of the week

 

Over 200 of the little buggers out now, and numbers are apparently climbing. Perhaps 300 all said and done. . . in which case, put out a wanted ad, and I suspect they can be found.



#28 gwlee

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Posted 04 November 2019 - 06:42 PM

Not so much frustrating as potentially damaging to the optics. I use my scope almost daily, and a few times I have opened the case to find the objective cover has come adrift, which looks like it could allow it to come in contact with and damage the objective in transport.

 

A bit of blue masking tape securing the cover isn’t an elegant solution, but seems to be an adequate temporary  preventative measure until AP acknowledges and fixes the problem. A hoodie are other aftermarket cover is might be permanent solution to consider that doesn’t depend on AP’s timely performance though. 

 

It could be something as simple as the shim stock that AP uses inside the cover taking a set and the cover becomes loose after few weeks of regular use, which could explain why AP isn’t seeing the problem in the shop and hasn’t fixed it yet. Whatever the cause, AP needs to take these reports seriously and fix the cover though. 

Update 11/4/19:

Just received a message from AP saying they have a field installable fix for the loose dust cap that they will ship to me. Suspect that someone at AP monitors CN and spotted my blue tape fix on their $4K scope and barfed :-)


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#29 Gavster

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Posted 05 November 2019 - 01:13 AM

Baader Travel Companion 95mm CaF2  https://www.baader-p...-companion.html

Agreed - it’s a fantastic scope...


Edited by Gavster, 05 November 2019 - 05:46 AM.


#30 kmparsons

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Posted 06 November 2019 - 03:04 PM

I have had my AT 92mm for several months now, and it is loads of fun. The optics are truly remarkable, the build is solid, and the focuser is very good. You normally would not think of an f/5.5 instrument as a planetary scope, but it performs very well. It excels as a wide-field scope with a 2" 26mm eyepiece. The compact size makes it easy to mount stably and easy to transport to a dark sky site. Finally, the price is right. 


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#31 wsg89

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Posted 08 November 2019 - 01:05 AM

First pic with taken with my AT92.  October 26, 2019.

    400@ 30seconds.  Bad seeing.

    ZWO asi294 MC pro, gain-120.

    No calibration frames.  Unguided.

I'm very happy with this telescope!  Many thanks to Pete at Astronomics.

 

M42@92mm 2019.jpg

   


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#32 Kon Dealer

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Posted 08 November 2019 - 08:43 AM

First pic with taken with my AT92.  October 26, 2019.

    400@ 30seconds.  Bad seeing.

    ZWO asi294 MC pro, gain-120.

    No calibration frames.  Unguided.

I'm very happy with this telescope!  Many thanks to Pete at Astronomics.

 

attachicon.gif M42@92mm 2019.jpg

Very nice!



#33 aa6ww

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Posted 08 November 2019 - 01:10 PM

My AT-92 has been a game changer for me and has become my small scope of choice for casual back yard fun

My Next lower size scope is my FC-60 and the scope above this one in size is my SW120ED.

Naturally, its the most used of them all because it works great, even with the 2x big barlow in front of the diagonal at 1500FL.
It does everything well, great focuser, outstanding optics, very compact but still very potent for its size.
It sents up quickly using my CG-4, but for all nighters, I prefer it on my new AVX mount so I get help locating objects in my mediocure back yard skies.

Nothing but praise for Astro-Tech for producing this outstanding powerhouse in such a compact package.


.....Ralph in Sac

Attached Thumbnails

  • at-92 at F 16.jpg

Edited by aa6ww, 08 November 2019 - 01:11 PM.

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#34 lynnelkriver

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Posted 09 November 2019 - 10:44 AM

Stellarvue SV90TBV.  Still got it!  Scott


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#35 aa6ww

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Posted 09 April 2020 - 03:12 AM

What about the Takahashi Sky90. Anyone have one and think its a fantastic telescope also? I've used one for a while, a friend had one, and it was excellent.

 

...Ralph


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#36 chemisted

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Posted 09 April 2020 - 08:06 AM

What about the Takahashi Sky90. Anyone have one and think its a fantastic telescope also? I've used one for a while, a friend had one, and it was excellent.

 

...Ralph

I have had my Sky 90 for 20 years (it is serial #18).  I had put my name on the A-P Traveler list and picked up the Tak when it was first offered in Nov. 1999 to tide me over.  When the Traveler finally arrived in mid 2003 it got a couple uses but couldn't compete with the Sky 90 for quick use (it was just too heavy) and it sat on the shelf for years until I ultimately sold it.  The Sky 90 does everything from wide field to high power (200X) viewing.  I was once able to split a tight unequal binary in poor seeing when my TV-140 failed.  More recently the Tak has provided very wide field views of emission nebulae up  to 7 degrees in breadth using my image intensifiers afocally with a reducer and H-alpha filter in the light path too.  Used this way, I am operating at an effective f/ratio of 1.7.  Very few telescopes allow this kind of an arrangement.


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#37 gezak22

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Posted 09 April 2020 - 09:54 AM

What about the Takahashi Sky90. Anyone have one and think its a fantastic telescope also? I've used one for a while, a friend had one, and it was excellent.

 

...Ralph

I used to have a Sky 90 II and I thought it was a fantastic scope. Once I took the time to collimate it, it stayed collimated for over two years of monthly driving on a bumpy road. I sold it because my habits eventually changed.



#38 m9x18

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Posted 09 April 2020 - 01:55 PM

This is a nice option if you can find one. The Stellarvue SV90TBV Fluorite Triplet. Mine is in Stardust White.

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  • 90T Inside Room 2 (2).jpg

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#39 m9x18

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Posted 09 April 2020 - 01:58 PM

Silver lettering inset on the Stardust White dew shield. 

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  • SVlogo2 b.jpg

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#40 samovu

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Posted 09 April 2020 - 03:03 PM

What about the Takahashi Sky90. Anyone have one and think its a fantastic telescope also? I've used one for a while, a friend had one, and it was excellent.

 

...Ralph

My Sky 90II rivals my FS-102 when used with the “dedicated” Extender-q. I believe that this extender was designed for use with the Sky 90 and original FSQ-106 but not sure about this. My main targets at home are planets. 

 

Cheers,

John



#41 AdmiralAckbar

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Posted 10 April 2020 - 10:42 PM

I have had my AT 92mm for several months now, and it is loads of fun. The optics are truly remarkable, the build is solid, and the focuser is very good. You normally would not think of an f/5.5 instrument as a planetary scope, but it performs very well. It excels as a wide-field scope with a 2" 26mm eyepiece. The compact size makes it easy to mount stably and easy to transport to a dark sky site. Finally, the price is right. 

Which eyepiece(s) do you like with the AT92 for planets?




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