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Esprit 120 vs TSA120?

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#51 NHRob

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Posted 18 October 2019 - 07:58 AM

I plan on selling off the C6R and going to one refractor.   I want an easier rig to setup.  The C6R OTA is sizable and using it on the EQ6 makes for a massive setup ... at least for me.

I want a somewhat smaller rig but, this time with premium optics.

The TSA-120 looks awesome.  It should be easy to mount on let's say an AVX.   

The only thing I fear is regretting dropping down to 120mm aperture from my C6R.

130-140mm would be a smaller leap.

 

The TSA120 is tops on my list at the moment but, I am mulling over increasing my budget to $5K+.

I am thinking maybe looking for a used AP130EDF or TEC140.

I had a friend who owned an AP130EDFS years back.  It was quite a nice package and I loved the views.

 

Anybody have a spare AP130EDF or TEC140 lying around they want to get rid of??     lol.gif

 

I think I could still go with a smaller mount than the EQ6.

 

I'll think about it more over the weekend



#52 25585

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Posted 18 October 2019 - 08:11 AM

The APM 140 ED is what I would choose. ES have a bpnew140 I want to know more about. But 140 will leave you happier downsizing IMO. 


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#53 CounterWeight

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Posted 18 October 2019 - 11:52 AM

A good point about aperture and downsizing, bv'ing and focuser travel, expected quality, accessories required...  Lots to think about and compare.

 

I owned the TSA120 for a while and it was really an easy scope to field, I used it on a SkyView pro and was very solid.  For me, anything under 5" is a small scope, and I'd consider carefully that no matter how good the optics.  Saying it is a small scope i don't mean as a negative, just that there is some expectations management involved depending on what you like to observe compared to 12" aperture.  So I'd think a lot about the tradeoff in ease of use that comes with smaller aperture and then the objects and exit pupil constraints, and it sounds like you are doing that.  I love refractors, that they give such crisp views and no need to worry about collimation, so not trying to start a mirror vs. lens debate, just that there are unavoidable tradeoffs.



#54 25585

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Posted 18 October 2019 - 12:50 PM

An interesting post on Stargazerslounge says the Esprit is really too heavy for a HEQ5 mount, an EQ6 being the ideal minimum for it. 



#55 Loren Toole

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Posted 18 October 2019 - 04:49 PM

The Espirit 120 is a heavy but compact (short) optical tube, I think an EQ6 is probably over-mounting this scope if primarily for visual use.

 

I've used my Espirit 120 on a Vixen GPDX mounting since 2016, when balanced it seems to be adequate for visual and tracking up to 250x is fine. I've also EAA imaged but found the motor drives are extremely taxed by any imbalance in RA (no surprise) and also possibly they just lack enough torque to really handle the substantial 26 pounds this scope presents. More than 15 or 20 seconds of continuous imaging does show some drift but acceptable for EAA using SharpCap's "alignment" feature. So, the mount requirement is not a clear cut spec for many uses.

 

Loren



#56 NHRob

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Posted 19 October 2019 - 05:49 AM

How big a deal is setting up the APM140?   I recognize that the easier to setup, the more I will use it.  That's why I'm getting away from the C6R rig.  I found myself making excuses for not setting it up when it's clear at the end of the day if I was tired at all.


Edited by Tofuu, 19 October 2019 - 05:49 AM.


#57 NHRob

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Posted 19 October 2019 - 07:01 AM

I have a line on a Christen triplet, pre-Starfire, 130mm f/8.

It is old-school but, much more affordable.  Plus, tube weighs maybe 16lbs.

I'm more concerned over the optics.  I've heard great things about the Christen triplets for visual use.



#58 NHRob

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Posted 20 October 2019 - 10:12 AM

Well, closing a deal on a used TSA120. After that, I will be shopping for a nice goto mount easier to drag around than the EQ6.
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#59 bobhen

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Posted 20 October 2019 - 11:10 AM

Well, closing a deal on a used TSA120. After that, I will be shopping for a nice goto mount easier to drag around than the EQ6.

You have chosen wisely Grasshopper.

 

An AVX-class mount will work very well with a TSA 120. There are also some very nice manual alt/az mounts that will work very well with a TSA 120.

 

Enjoy

 

Bob


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#60 NHRob

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Posted 20 October 2019 - 12:11 PM

Thx.  Does this mean I get to learn the secret Tak handshake??

 

An AVX is a nice, modest priced option.   I am also considering something funkier.

A few other candidates ....

 

iOptron:     AZ Mount Pro.  or the CEM40

SW AZEQ5

GM8.  (no goto)

 

I am intrigued by the possibility of running as altaz goto/tracking.



#61 CounterWeight

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Posted 20 October 2019 - 12:31 PM

 

I am intrigued by the possibility of running as altaz goto/tracking.

 

 

 IMO tracking helps eek out every drop from the scope, keeping the object centered in scope and eyepiece while all you have to do in concentrate on the view.  No need to re-center when observing with small or large groups.


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#62 25585

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Posted 20 October 2019 - 01:39 PM

Thx.  Does this mean I get to learn the secret Tak handshake??

 

An AVX is a nice, modest priced option.   I am also considering something funkier.

A few other candidates ....

 

iOptron:     AZ Mount Pro.  or the CEM40

SW AZEQ5

GM8.  (no goto)

 

I am intrigued by the possibility of running as altaz goto/tracking.

https://trackthestars.com/



#63 NHRob

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Posted 20 October 2019 - 01:50 PM

Right. Tracking is great when sharing views with others

#64 Kunama

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Posted 20 October 2019 - 04:44 PM

Thx.  Does this mean I get to learn the secret Tak handshake??

 

An AVX is a nice, modest priced option.   I am also considering something funkier.

A few other candidates ....

 

iOptron:     AZ Mount Pro.  or the CEM40

SW AZEQ5

GM8.  (no goto)

 

I am intrigued by the possibility of running as altaz goto/tracking.

Unfortunately, NO, you need to earn the "handshake" so you will need at least another two genuine Takahashi scopes, mounts or accessories to get the "Key" that unlocks the case where your handshake information is stored.....

 

As for mounts for the TSA120, a tracking mount on a good stable tripod is the answer. That will allow you to exploit the TSA's capability to be used at high magnifications on planets and lunar views.

I still prefer the AZ-EQ6GT on a 3rd party solid tripod like the BB Planet or in my case the Tak EM400 tripod....


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#65 NHRob

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Posted 21 October 2019 - 06:35 AM

Anyone try a AZ Mount Pro with their TSDA-120?

Perhaps. I'll ask on the Mounts forum as well.

Thx



#66 natwin

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Posted 21 October 2019 - 07:37 PM

I have a couple more cents to add to the pile regarding the TSA120 vs Esprit120 derby. If you intend to pursue AP with your scope, the TAK is a more flexible platform. True the Esprit120 comes with a field flattener and they make a 0.85x reducer, but if memory serves me, the corrected field of the Esprit series is 33mm, whereas the TAK field flattener and 0.7x reducer have corrected image circles of 40mm and 44mm respectively. So the TAK could be used with larger sensor cameras, which will continue to come down in price as CMOS astro cameras become more common place. Also, the 0.7x TAK reducer would offer wider views, if that's your sort of thing. Of course, you may not have any interest in larger format AP, but I thought it worth mentioning.



#67 NHRob

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Posted 21 October 2019 - 08:12 PM

No interest in AP

#68 gnowellsct

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Posted 22 October 2019 - 03:50 PM

Anyone try a AZ Mount Pro with their TSDA-120?

Perhaps. I'll ask on the Mounts forum as well.

Thx

92 mm on AP 900 = Muy bueno

 

cff solar on ap900.jpg



#69 25585

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Posted 23 October 2019 - 07:05 AM

No interest in AP

Me neither, apart from phone snapshots. I wanted a triplet for comparison with my 120 Equinox doublet and to try a different make . Originally an AP 130, then Tak TOA 130, but I would have needed a stronger mount for either. The TSA120 light weight for a triplet makes it fine for a good 120 doublet capable mount, so money saved on not needing that went on the scope. Only a signifigant aperture increase would tempt me to sell the TSA, its the ultimate GOTO refractor over 100mm.


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#70 NHRob

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Posted 26 October 2019 - 08:39 AM

Just curious ....   what do people use for storage/carrying case for the TSA-120?



#71 25585

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Posted 26 October 2019 - 12:57 PM

https://www.cloudyni...se-for-tsa-120/



#72 SandyHouTex

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Posted 28 October 2019 - 10:29 AM

I'm looking through pricing right now.  Too bad Tak never seems to have a sale.

How true.  It seems they like to price gouge Americans.  I tried to get on their ".jp" website and I was forbidden.  Not to mention that many of the folks who travel to Japan have been able to  purchase the same scopes sold by Tak America for $1000 cheaper.



#73 bobhen

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Posted 28 October 2019 - 01:37 PM

I’m guessing here but Tak America probably has an non-compete import agreement with Takahashi that covers North America. That agreement eliminates competition. So Tak America can charge what they want within the terms of that agreement.

 

However, Takahashi would certainly require that Tak America not just be any dealer/importer. I’m sure Tak America would have to be experts on the product line, make repairs, offer most all products etc., and really be an extension of Takahashi itself.

 

Tak America gets rewarded for offering that expertise and service with the non-compete import territory agreement.

 

Stellarvue did have (and might still have) a similar import agreement with their imported product line. SV’s prices were/are always higher than for basically the same scope from Telescope Service in Germany.

 

I’m not saying this is good or bad, just that it seems obvious. 

 

Bob



#74 Topographic

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Posted 08 November 2019 - 02:46 PM

Just curious ....   what do people use for storage/carrying case for the TSA-120?

One more page and they will be having you buy a Bugatti Veyron to carry it around. Now what is the boot space? grin.gif



#75 25585

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Posted 08 November 2019 - 06:21 PM

Just curious ....   what do people use for storage/carrying case for the TSA-120?

I have a case for the ES 127 ED which is perfect. Got the idea from this thread https://www.cloudyni...se-for-tsa-120/




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