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TS-Optics import to USA - Or Alternatives for 90/94mm ED?

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#1 Sr2019

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Posted 05 October 2022 - 11:18 AM

I ran into Ts-optics scopes on teleskope express. The price seems quite good of the on-paper specs. I wanted to know what the latest is on importing Ts-optics and whether DHL/Fedex are able get these in smoothly. I read a couple of threads stating random feels and 25% duty tacked-on for some people, so wanted to see if this is even worth it or if its best to stick with 80mm F6/F7 Triplets/doublets locally available (Svbony or astrotech). Following were the models I was interested in but open to equivalent alternatives available more easily in the US :

1. TS-Optics ED Apo 96 mm f/6

2. TS-Optics 76 mm f/5,5 Triplet

3. TS-Optics 94 mm f/5,5 Triplet

 

I wanted to know if these are about the same or better in performance than something like Svbony or Astro-tech EDs available here.

 

I was trying to stay close to $1000, but ideally I wanted a 90 or 94mm f5.5 than 80mm F6, are there any viable options available in that aperture range in the US (only one I saw was the AT90 but thats significantly more expensive and out of stock)? My purpose is going to be primarily quick grab and go Visual setup first, but ability to dip into AP or EAA down the line.

 

Thanks and cheers.



#2 Space_Race_T.J.

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Posted 05 October 2022 - 12:05 PM

https://agenaastro.c...tar-optics.html

 

If you decide against importing a TS-Optics model, those telescopes are sold in the U.S. by Agena Astro under the Sharpstar brand.

 

There have been arguments whether they are the exact same specifications or not between the two brands depending on the model. So keep that in mind.

 

Good luck on your search,

 

T.J.


Edited by Space_Race_T.J., 05 October 2022 - 12:06 PM.

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#3 JMP

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Posted 05 October 2022 - 01:12 PM

I bought a TS Photoline 80mm f/6 triplet. It's a nice scope, I got it a little cheaper than the Meade version. I did feel that TS was not forthcoming when I asked about import duties and they gave me a generic non-answer.

 

If you had an issue, sending it back to Germany might be a problem. If I did it again I might look harder at domestic options.



#4 Sr2019

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Posted 05 October 2022 - 04:26 PM

Thank you for the inputs! 

 

Are there any 90/94mm F5.5 style short tube options? Or is the 80mm F6 Triplet pretty much the only option around $1000. 

 

I basically want a scope thats:  ~6lbs, ~500-550mm (colapsed length), greater than 80mm, ~$1000-1200, F5-F6 and ED optics (doublet or Triplet)

 

What options do I have in that category apart from the AT90 (which is out of stock and much more expensive) or the Sharpstar 94mm (which is also a tad pricey and seems to have less reviews/info on quality)

 

Secondly is it worth chasing the 90ish aperture for visual? Or will it be marginal compared to an 80mm F7 doublet? 

 

Thanks


Edited by Sr2019, 05 October 2022 - 04:27 PM.


#5 Space_Race_T.J.

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Posted 05 October 2022 - 04:41 PM

You might not find a scope that meets all your criteria; especially weight & price, when talking about a 90mm scope. Here's a few examples.

 

This one weighs 11.46 lbs and is $1,999.     https://agenaastro.c...aph-fra500.html

 

The AT92 is 8 lbs and $1,795

 

SVX90T is 10 lbs with rings and $2,695



#6 Reid W

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Posted 05 October 2022 - 05:42 PM

Sr2019-  yes, visually there is a difference between the 80 and 90 class.  While I really enjoy my 81, my 90 class refractors show things...easier.

 

Keep in mind that at this focal ratio how your diagonal will perform.  My f6.6 did not perform well (at higher magnifications) with a prism, but does great with the mirror.


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#7 Sr2019

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Posted 05 October 2022 - 06:38 PM

I see so, is the general consensus to just save my money and go with a 80mm ED like the AT80ED or Svbony 80mm doublet (~$400) than go with a 80mm triplet which might be slightly more compact but is double the price. Since my first priority is going to be grab and go visual and AP/EAA as a nice to have feature for the future. 

 

Any point in saving further and going with a 70/72mm F6, which would be even more compact?

 

Basically the point I'm trying to make is, if I'm going to gain like 10-20% perceived visual performance for 200% the price, I'd rather save my money. So unless the jump from 72mm to 80mm  vs 80mm to 90mm are very significant in perceived performance, I'm okay with a little bit of compromise in return for better price and length/weight. 


Edited by Sr2019, 05 October 2022 - 06:38 PM.


#8 Wildetelescope

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Posted 05 October 2022 - 09:04 PM

Your light grasp scales with the square of the aperture radius.  That is roughly a 40% difference between a 70 and 90 mm scope.  About 25 % between 70 and 80 mm.  As others have suggested, that is pretty noticeable.  Up to you if that makes enough difference.

 

JMD


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#9 Sr2019

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Posted 05 October 2022 - 11:43 PM

Thank you, that makes sense! 

 

 

A couple of other contenders I discovered where: Orion EON 110mm and SkyRaider 80mm FPL-53 (they are different price points but fulfill my needs)

Is it worth considering these over AT? Any disadvantages or issues known?



#10 F.Meiresonne

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Posted 06 October 2022 - 01:47 AM

Thank you for the inputs! 

 

Are there any 90/94mm F5.5 style short tube options? Or is the 80mm F6 Triplet pretty much the only option around $1000. 

 

I basically want a scope thats:  ~6lbs, ~500-550mm (colapsed length), greater than 80mm, ~$1000-1200, F5-F6 and ED optics (doublet or Triplet)

 

What options do I have in that category apart from the AT90 (which is out of stock and much more expensive) or the Sharpstar 94mm (which is also a tad pricey and seems to have less reviews/info on quality)

 

Secondly is it worth chasing the 90ish aperture for visual? Or will it be marginal compared to an 80mm F7 doublet? 

 

Thanks

This one is but expensive, merely for AP but can well used for visual too.

 

https://agenaastro.c...aph-fra500.html



#11 bobhen

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Posted 06 October 2022 - 04:27 AM

Astronomics offers the Astro-Tech line of Chinese-sourced refractors and the 102mm F7 "EDL" ED doublet at 9.3 pounds with rings and dovetail mounting bar and at $1,079 might be a consideration.

 

The scope has an optical quality guarantee of a .95 Strehl minimum. For visual you will appreciate the 20mm advantage over an 80mm. The scope is a doublet so it will acclimate quickly. The optics are very close to color free visually. The scope can be used for EAA and would be good at dipping your toe into imaging.

 

Astronomics also offers the less expensive Astro-Tech 102mm F7 ED with the same basic specs but without an optical quality guarantee. Do yourself a favor and get the EDL version, it's the better scope visually.

 

HERE is a link.

 

Good Luck

 

Bob


Edited by bobhen, 06 October 2022 - 04:27 AM.

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#12 Wildetelescope

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Posted 06 October 2022 - 05:40 AM

Astronomics offers the Astro-Tech line of Chinese-sourced refractors and the 102mm F7 "EDL" ED doublet at 9.3 pounds with rings and dovetail mounting bar and at $1,079 might be a consideration.

 

The scope has an optical quality guarantee of a .95 Strehl minimum. For visual you will appreciate the 20mm advantage over an 80mm. The scope is a doublet so it will acclimate quickly. The optics are very close to color free visually. The scope can be used for EAA and would be good at dipping your toe into imaging.

 

Astronomics also offers the less expensive Astro-Tech 102mm F7 ED with the same basic specs but without an optical quality guarantee. Do yourself a favor and get the EDL version, it's the better scope visually.

 

HERE is a link.

 

Good Luck

 

Bob

I think the Astronomics scopes are sourced from Long Perng, out of Taiwan, not mainland Cnina. Regardless, In my experience the AT scopes are excellent performers visually and mechanically.  

 

Good Luck!

 

JMD


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#13 Sr2019

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Posted 06 October 2022 - 10:26 AM

Astronomics offers the Astro-Tech line of Chinese-sourced refractors and the 102mm F7 "EDL" ED doublet at 9.3 pounds with rings and dovetail mounting bar and at $1,079 might be a consideration.

 

The scope has an optical quality guarantee of a .95 Strehl minimum. For visual you will appreciate the 20mm advantage over an 80mm. The scope is a doublet so it will acclimate quickly. The optics are very close to color free visually. The scope can be used for EAA and would be good at dipping your toe into imaging.

 

Astronomics also offers the less expensive Astro-Tech 102mm F7 ED with the same basic specs but without an optical quality guarantee. Do yourself a favor and get the EDL version, it's the better scope visually.

 

HERE is a link.

 

Good Luck

 

Bob

I totally overlooked that one. It does seem like a good option, do you think it will be good enough on a carbon fiber/aluminum photo tripod with a fluid head? Thats the setup I plan to travel with, I'm wondering if this one is too front heavy and long for that application? 

For general viewing I plan to use my celestron EVO mount, which shouldnt be problem I think. 



#14 Sr2019

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Posted 06 October 2022 - 10:29 AM

Another scope that caught my attention yesterday was the Founder Optics FOT86, though its tad expensive than I'd like it to be, it definitely seems short tube enough for travel. Also what fascinates me is the Takahashi style design, and wondering if that would be a day and night difference for visual compared to lets say AT80EDT or from a price to performance comparison with the AT102EDL? 



#15 peter k

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Posted 06 October 2022 - 10:46 AM

I'm planning to downsize from my AT102ED—a fine scope, but I'm looking for something a bit more G&G to complement my C8. This one is calling to me: https://www.teleskop...AP-Focuser.html

 

90mm, f/5.5, about 7 pounds, nice price with the dollar as strong as it is. The only downside is that if a return, if needed, would be a pain. So I might just go with an AT80ED.


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#16 Sr2019

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Posted 06 October 2022 - 10:53 AM

I'm planning to downsize from my AT102ED—a fine scope, but I'm looking for something a bit more G&G to complement my C8. This one is calling to me: https://www.teleskop...AP-Focuser.html

 

90mm, f/5.5, about 7 pounds, nice price with the dollar as strong as it is. The only downside is that if a return, if needed, would be a pain. So I might just go with an AT80ED.

Thats exactly my situation, i have a C8 Evo but it weighs like 40lbs so not exactly travel friendly.

 

Would you say you could air travel with your at102ed? whats the bare minimum tripod/head that can support it?

 

The stuff from Teleskop-express is also on my radar but the import duties hassle is my biggest hurdle i dont want to deal with.

 

Also check FOT86, let me know what you think of that



#17 peter k

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Posted 06 October 2022 - 10:55 AM

Your light grasp scales with the square of the aperture radius.  That is roughly a 40% difference between a 70 and 90 mm scope.  About 25 % between 70 and 80 mm.  As others have suggested, that is pretty noticeable.  Up to you if that makes enough difference.

 

JMD

Yep, scales with square of aperture. A 90mm scope gathers 65% ((90^2-70^2)/70^2) more light than a 70mm. Inversely, 70mm gathers 40% less than 90mm.

 

An 80mm gathers 30% more light than a 70mm.



#18 peter k

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Posted 06 October 2022 - 11:00 AM

Thats exactly my situation, i have a C8 Evo but it weighs like 40lbs so not exactly travel friendly.

 

Would you say you could air travel with your at102ed? whats the bare minimum tripod/head that can support it?

 

The stuff from Teleskop-express is also on my radar but the import duties hassle is my biggest hurdle i dont want to deal with.

 

Also check FOT86, let me know what you think of that

I find the 102 f/7 to be quite a bit kludgier than an 80 f/7. I guess you could fly with the 102 though.

 

I don't think there'd be any import duty on a Taiwanese telescope, but I really don't know much about that stuff. I do know that there was no duty on the superzoom (Long Perng, Taiwanese) I recently got from APM.

 

The FOT86 is too expensive and too heavy for me.


Edited by peter k, 06 October 2022 - 11:03 AM.


#19 Space_Race_T.J.

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Posted 06 October 2022 - 12:33 PM

I totally overlooked that one. It does seem like a good option, do you think it will be good enough on a carbon fiber/aluminum photo tripod with a fluid head? Thats the setup I plan to travel with, I'm wondering if this one is too front heavy and long for that application? 

For general viewing I plan to use my celestron EVO mount, which shouldnt be problem I think. 

This discussion might help.    https://www.cloudyni...d-combo-choice/

 

I think with a AT102EDL you would need a more substantial mount than a fluid head though.

 

T.J. 




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