Time for a new scope, maybe - need some feedback (WO Fluorostar vs Esprit ED)

MarcMarkitectStuart Taylor
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Marc avatar
Hi,

so I just broke my Newtonian, after fiddeling with it too  much. Been having trouble getting the collimation to stick for the past two years. Every night I would nervously check the first images to see if everything looks fine. Half the time it didn't, so I spent a fair amount of time with an allen key, hopping around in the dark like a luncatic. Suffice it to say, my enjoyment of the hobby suffered. 

The damage can  be repaired, but I am seriously considering just moving on and get an APO. Focal ratio will be an issue, but I'd rather have longer exposures than do the Allen Key dance. 

My basic requirements are a) sufficient focal length for some of the smaller "usual suspects", like the more prominent galaxies, planetary nebulae and the like and b) overall good mechanical and optical quality. Maybe as a third point, c), the setup should be "portable", i.e. something I can put together and tear down on my own (am physically fit). 

1) William Optics Fluorostar + CEM70G
2) Esprit 150ED and EQ8-R

The price difference is about 2k (Euros). Both set ups look attractive and suitable to my needs. The Esprit+EQ8 are probably a "handful" in terms of handling, but I have seen people use it in they backyard without a permanent installation. 

I am currently leaning towards option 1, the WO, just because it should handle better. And the WO scopes have a better reputation than Skywatcher (both being good scopes, tho). 

Any thoughts that could help me decide? Maybe some of you have these setups or experience with either scope? My only APO experience has been with a 4" "medium grade" instrument that worked "ok'ish"…the flattener would produce atrocious halos on the blue channel and the collimation was not perfect. It would also pinch in sub freezing temperatures. Those are obviously things I don't want to see smile


Cheers,
Marc
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andrea tasselli avatar
For the price of a 6" ED APO (sub-par if you ask me) you should be able to get a fairly large RC or a proper astrograph. Have you considered these options?
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Marc avatar
For the price of a 6" ED APO (sub-par if you ask me) you should be able to get a fairly large RC or a proper astrograph. Have you considered these options?

Yes, but that would bring me back to "mirror system with collimation problems". I have a severe lack of mechanical talent, so I would probably just be trading one problem for another. The APO is basically my attempt at removing any kind of "fiddeling" from the process (APOs tend to hold collimation relatively well, even after shipping).
andrea tasselli avatar
You'll be wrong to assume that APOs have no need to be collimated (I have one very expensive example in mind). Or that cannot get whacked out of collimation when moved around. My f/4 newt/astrograph holds the collimation so well that I must have done it at least 1 year ago. The f/6 Mak-Newton was never collimated since I checked when I got possession of it ages ago. Ditto for the f/6 Newton, which to be honest I forget the last time I collimated it. The various Mak-Cass I have had and have were never collimated and they travelled the world (well, Europe). So it all depends. But then it is you call…
cdavmd avatar
I think a 6 inch refractor ED is not worth the price tag and is a behemoth to boot. 

ive (I) owned all sorts of scopes- 

currently an AGO iDK. Collimating can be a royal pain!

Tak FSQ106- tilt was an issue at startup but once nulled out it has been perfect and collimation has never been an issue going on 5years now. 

I also have a WO61 zenith star and a red cat. Both have been awesome without issue. 

Based on what you are saying I think a 90-110 range refractor would make you happy. 

my two cents! Cheers
Tim Ray avatar
I know your are getting a lot of responses… I own a 132FLT WO  with the STD focuser.  I also own a FT 3" Focuser.  put a ZWO EFF and in the dark you can't tell the difference.  The 132FLT rides very well on my CGX and in a pinch (when the CGX has the 10RC) it rides the Orion Atlas…  Any mount with the CGX specs  or better will do a great job on the 132FLT…

Now for a subjective review - comparison   

It is hard to deny the quality of some of the Esprit images found on AstroBin! The FL don't matchup aperture to FL between the brands.  I would guess they weigh close as most Triplets are heavy.  I would look at how the FL's matchup with your Imaging camera to the objects you like to image…  In the States the availability of the EQ8 (or any of the higher end mounts) only exists in the used market. Lead times are excessive! 

I love my WO OTA's, 132FLT and a GT81-IV.  inch for inch my GT81 is the best scope I am have (by more than a little). The 132FLT does better but its a 132…

Hope this helps…

CS

Tim
Ricky Graham avatar
I have the Fluorostar 91 Triplet, but not enough imaging time to say yay or nay. Its certainly been hyped up as a good scope and i'm impressed with the limited data i have. 

Ricky
DT6 avatar
Both of these are very good scopes, however I tend to recommend Option 2 for a few reasons, and I caveat this with the assumption that you are in the Continental United States. 

1.  Most of the feedback I've seen or heard from knowledgeable/experienced astrophotographers on these scopes tends to favor the Sky-Watcher.  For one example, see the interview with Vic Maris (Stellarvue President) on the Sky-Watcher "What's Up" YouTube Series (25 September 2020).  It is a very enlightening discussion on the quality of Espirit optics.  For the most part the objections I hear regarding WO scopes (I have the GT81) is that the scopes/designs/fittings/etc. are constantly changing, so it can be more difficult to get adapters, etc. Whereas Sky-Watcher has pretty much kept the Espirit line consistent.  For example, when I called Ron at Moonlite to get a new flange for my GT81, he had me mail a picture of the threads on the scope tube where I would connect the flange for the Moonlite because "I can't keep up with all of the changes from WO".  So he was able to send me a flange that worked fine, but when you ask him about Sky-Watcher the answser is always "no problem, I've got that".

2.  I always consider the quality of the warranty as well as the cost of shipping my equipment for repair.  Sky-Watcher has a two year warranty on most of their products, the EQ8 and Espirit included.  They will usually cover the cost of shipping provided you can demonstrate/clearly identify the issue, and they are not difficult about working with you on that.  iOptron on the other hand has a 1 year warranty and will charge you for shipping (both ways)  to work on your mount.  I had a CEM25 a few years ago and had a warranty issue.  It cost me over $100 to ship both ways and I was only  a few hundred miles from their location in MA.   Sky-Watcher support (phone/email) is better than iOptron in my opinion.  When I had CEM25, iOptron was pretty good about getting back to me, but the past year or two, I have had a very difficult time reaching them and getting timely responses. Sky-Watcher always gets back to me within a day or two. 

3.  If you need service for WO, you will likely have to ship the scope overseas.  Sky-Watcher does its repairs in California, so if you ever need service your shipping costs will be significantly less (assuming you are out of warranty) shipping to a CONUS location vs. overseas.

4.  I currently use the Starizona APEX reducer in my GT81, and it is great.  But, they were designed specifically for the Espirit series, so while I'm tracking down spacers/adapters to use it with my GT81, I would not have those issues with an Espirit.

Like others have said, you likely cannot go wrong with either choice.  While I personally favor Espirit, as you can see I own a GT81 myself so there are certainly circumstances where you may favor one over the other.  However, if I were considering a refractor larger than 80mm or so, I'd probably stick to the Espirit for reasons mentioned above as shipping expenses overseas increase significantly with larger weight/size.

Best of luck with your decision.
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John Noble avatar
I just received an FLT 132 Rack and Pinion focuser and I am delighted with it. I was in line for the Esprit 120 but the dates just kept pushing out so when I saw the 132's come in stock I took the plunge. I'd tend to agree you can't go wrong either way it was the price difference that pushed me towards the 120 initially and the overall package (case, flattener, diagonal) WO just provides a padded case all the rest is an add on. Looks like relative price is less of an issue with the 150's.

Just one point I'd add is this is the first big refractor I've owned. I've done Epsilons, MakNewts, Newts SCTS up to 9.5" but nothing prepared me for how substantial this scope was. The 132 tube is 20 lbs  and I can mange it fine but there is no denying it is in a different league in terms of weight and handleability to anything I've owned before. I take it down after use as I'm just not comfortable leaving something that expensive outside the main house - not sure I'd fancy doing that with one of the 150's.
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Stjepan Prugovečki avatar
Well, my five cents: Both EQ8 and Esprit 150 are heavy beasts, so, on practical terms , 
portability will be at the edge. EQ8 is more observatory kind of mount. CEM70 will handle the weight of Esprit 150 with photographic gear and improve portability .  I  have CEM70 and Esprit 120 and can't complaint on either.  Consider CEM70/  Esprit 150 combination also.
Either way you go, you can't make serious mistake . Details decide  at the end (warranty, support, portability , total price, delivery time, etc.)
Good luck with your choice.
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Marc avatar
Thanks for all the input! I agree that the EQ8 is probably more than a handful. And from what I can tell, they are essentially out of stock for the forseeable future. Just heard from someone who waited an entire year. Seems like the CEM70 would handle my needs just as well all the while being more or less readily available. 

I have also slightly reduced my ambitions and am looking at the WO Fluorostar 132 specifically. Or the Esprit 120. Esprit seems to be "better value", the WO however has this…desirability, you know smile 

I am actually based in the EU and the company I would be buying the WO from has it's own service unit with optical benches and whatnot. So any issue I encounter past the warranty could be handled by that company - inlcuding full collimation (50 bucks shipping, I reckon).
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Michel Makhlouta avatar
I've been through a good amount of gear, and you cannot go wrong with Sky Watcher, both mounts and their Esprit line. In our local astrophotography group, Sky Watcher people are the only plug and play people, zero complaints, some of them were not even aware spacing is a thing to worry about. I ended up buying a used esprit 120 just for that, I got tired of spacing, tilt, weird stars, inconsistent results…
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Stuart Taylor avatar
I bought an Esprit 150 a few months ago and I am absolutely delighted with it! Breathtaking to look through and the first images I am getting (and I am by no means an AP expert) are really great. 

My only problem is that I probably now need a bigger mount… ;-)
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Marc avatar
Thanks again for sharing your thoughts. 

After thinking some more about it, my current plan is to fudamentally revise my setup to address the various issues I have come across and that were starting to tick me off. 

I will probably be going from:
QHY163m (small sensor, strong reflections on the cover glass of the chip, not a lot of dynamic range, strong amp glow)
200/Newton (collimation not stable..)
NEQ6 Pro + stock tripod (getting old, gears make crunchy noises at times (had it serviced 2 years ago), does not support Losmandy plates, no cable management)

To:
QHY286M
WO Fluorostar 132 (reduced to F5)
iOptron CEM70g + tri pier 360

WIll keep you posted…!
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Marc avatar
DP
Marc avatar
And a decision has been made (and stuff ordered for mucho $$$)….

I ended up ordering an EQ8 + pier tripod and a hand-selected and optimized Esprit 100. There is a company in these parts that has a world class optical workshop. You pay a little extra, but the result, so I have been told, is very much worth it. 

Not at all the "class" of scope I started out looking for. But the way I figured is that the Esprit 100 will be my "wide field" instrument (sort of); and I will complement that with a longer focal length scope for galaxies and such (on the fence between a couple of options, incl C11 Edge). But that is a decision for next year. 

It was actually pretty close between this setup  and the above mentioned WO 132 + CEM70. The deciding factor at the end was that I got offered a really good discount for the ESprit+EQ8 , whereas the company selling the WO scope could not be bothered to give me even 1% discount on a package deal And when asked if they would at least check the WO Apo on an optical bench prior to shipping, they just said "nope". That's not how you get customers, mates ^^

Anyway, new scope day soon (optimizing the scope and shipping all the stuff takes a little while)!
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Stjepan Prugovečki avatar
Great choice !
DT6 avatar
Congratulations, I think you will be quite happy with that setup and you certainly have a great weight margin with the EQ8.  Did you go for the standard EQ8 or did you opt for the encoders as well?

Best of luck with your new setup!
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Michael avatar
Bit of a newbie in the AP just approaching my 1 year mark.  I opted for a long term set up recently and it just happened to be an Eq8rh-pro (I would have gotten the non RH if they were in stock.. patience isn't something I normally have a lot of regarding expensive things).  Paired with an Esprit 120.  I've had zero issues with both as of now.  Guiding is extremely good every night it seems.  (last night .15-.20).  

Congrats on your incoming gear! CS
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Marc avatar
Congratulations, I think you will be quite happy with that setup and you certainly have a great weight margin with the EQ8.  Did you go for the standard EQ8 or did you opt for the encoders as well?

Best of luck with your new setup!

Thanks! No, I went for the encoder-less version. Just couldn't justify what is almost double the price for an admitably useful albeit non-essential feature. 

Yeah, the EQ8 really opens up possbilities. THe CEM70 would have also carried a wide range of scopes, but the EQ8 is just in a different class. Especially if and when I move into galaxy hunting with much larger focal lengths.
Markitect avatar
Hi Marc

I read your posts with interest, I’m having same deliberation over the same gear. I’m interested if it was RVO that supplied you? Great pics by the way. 

m
Marc avatar
Hi,

so this is an interesting story…
First of all, no, I am based in Germany, and bought from lacerta in Austria. 

However, returned the EQ8 since my unit was faulty (gear meshing was off, and I wasnt gonna open up a brand-new 5k mount). 

I eventually got the CEM70g, and am super happy with it. I am using it primarily with my Esprit 100, which means I can make full use of the built-in auto guider. Which is such a time safer, not to mention the digital polar scope.
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Markitect avatar
I had a look at your pics and read they were taken in D. Great pics BTW. I have been notified that the EQ8 RH will not be here until March 2023. So am also looking at the iOptron mounts. I liked how the EQ8 looks better, but it seems the CEM range are better!
Marc avatar
Glad you like the pictures!

I would def. consider the CEM line, but just beware that the CEM120 is probably not gonna be portable in the same way that the EQ8 is (i.e. no handles, and iOptron recommends locking the RA axis during any kind of transport - which makes the whole process both awkward and time consuming). It's really mostly meant for an observatory, I think (also: no digital polar scope - which you wouldn't need in that setting ofc). 

I can carry the CEM70 + Tripier (regular, not 360) fully assembled from my shed to the backyard. And since it has an integrated USB hub and power distribution, setup takes basically no time at all now. I found that the USB hub on the EQ8 did not work for me - and you can find similar reports on Cloudynights and other places. So it depends on how important that aspect is to you as well.
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Markitect avatar
….so I have ordered the EQ8 Rh Pro, and it feels right. Just hope I have better luck than you did! I liked the CEM70 option, but wanted some extra headroom on weight to give me future options.