60s or 70s refractor???

I would go (ups... I actually did it ) for the TS APO 71 (search on internet TSAPO71Q) ...
great Petzval design (flattener in the OTA) which offers a bunch of advantages to the OTA plus corrector/reducer option.

They have it in discount, I have got it one week ago (and had it extra bench tested from TS) and I have to say im already in love with it...
coupled with an ASI294MM... very nice little beast

My inquiry starting point was the same of you ...

Have fun !

Thank you very much for your reply, i am happy to see a reply.

Actually i saw very similar scopes of same design, Meade 6000 70mm F5 is one of them, i think William Optics also have one, and both are so so expensive, but going with this option means i have to wait until i buy APS-C mono to have wider field with it, as the main first scope i am buying will give me 280mm reduced, that is so wide with 294mono or similar 4/3" camera, not sure if it is then a better choice.

https://www.teleskop-express.de/shop/product_info.php/language/en/info/p12206_TS-Optics-REFRAKTOR-Korrektor-0-8x-fuer-ED---Apo-mit-60-65-mm-Oeffnung.html

It is a doublet so it will probably have its shortcommings when capturing G. LUM I havent tested yet, waiting for clear skies myself.

That is nice, i think this reducer with 60mm will be my second choice then, thank you very much 

You are right, on some forum post I saw the TSAPO71Q defined as a rebranded Meade (which was then defined an excellent OTA).
There are few changes I think, like the focuser improved and some minor other tweaks
Overall the price is very very good for an FPL53 triplet and fluorite flattener, and considering the many advantages of a Petzval design (350mm native flattened).
With the 294MM im pretty ok for the FOV as I also use a 6" newton which gives me some more closed up images...
And definitely (my two cents) if you can afford, do not wait to own an APS-C format camera to buy an OTA (or whatever else equipment) that can already match it, AP has not a huge second hand market and you risk to have a lot of unused redundant pieces...
I understand that a 50mm filter cost 3-4 times more than a 1.25", but once you will have a full frame camera the 1.25" will just collect dust... so if you can afford, overshoot a bit... on the long run is some money saved

Let me start from your last lines.

1. I will not buy a full frame, no point to spend too much only to have larger sensor, i have full frame cameras as DSLR and even a digital medium format, so i decided to leave that full frame for photography and not astrophotography.

2. I have Astrodon and Chroma filters at 1.25" size, they are so expensive filters, so i think this size protected me to go larger, but i might buy a cheaper brand filter that is good enough, Antlia Ha 3nm, i can afford 1.25" or 36mm or 2", and i have APS-C color camera so i don't need to have many filters and many cameras, i saw amazing results from all sensors sizes, not only a full frame.

3. That 70mm f/5 petzval whether it is from TS or Meade or anything else are expensive, $1000 something, and i am not planning for that much as second [third scope really, because i am spending nearly $1000 to buy Askar FRA400 [and its reducer], so i will have maybe around $300-500 left, maybe if i didn't buy a reducer with Askar FRA400 then i can afford nearly $600-700, so i was thinking i want to have more scopes, i have 4 cameras one of them is a color [RGB] and 2 filter wheels and 2 filters sets, so i can play with three scopes rather than 1 or two only.

4. It is about dual or triad imaging system, 90mm is one of them, Askar is second, can't afford another 90mm or 800mm triplet or even another Askar FRA400, unless i neglect the third scope and wait until end of this year or next year to buy a third scope be it Askar or anything else in $1000 price tag.

Im really not getting your plan, besides coupling similar scopes with different cameras to... get more data in the same time ? What scope is the 90mm ?
Honestly i would drop the ASKAR FRA400 (ups... i actually did it) for the TS.
How can you define "expensive" the TS APO considering the specs compared to the AFRA400 ? they cost the same but seems to me the lenses and flattener are best on the TS...  

Till now the strategy "i have a budget and i will fit as much cheap stuff i can into it" did not worked for me... wasted quite good money...
wasted because you do not re-sell cheap second hand stuff, and wasted because you realize soon that you overgrown your cheap equipment and either you try to improve it (additional cost and DIY time+associated risk of messing up) either you just watch it building up dust time over dust time.

m2c

Ok, i can answer or reply you to make it more clear, it is your right to know more details.

1. Yes, my plan is to get multiple scope at same FOV or closer/similar FL for getting data in the same time.

2. I have 4 cameras, 2 of them are very very similar or same alike, which are QHY163M and ZWO ASI1600MM, both have same scope, and i have QHY294M new camera which has also 4/3" sensor very similar to the two but newer, so those three can very much sharing similar FOV if the scopes giving same/similar FL, only APS-C is a color camera, even this can match the two/three mono cameras if i can make the scope paired with it at same and close FOV, i use astronomy.tools site and it shows me that easily.

3. My 90mm is TS Optics 90mm F/6 Triplet APO FPL-55, the newest model from them, i ordered last year but they delayed until I've got it this year like 2 months ago, this is my first ever APO triplet, i only have ST80 achro and two Newts and a Mak.

4. When i ordered that 90mm last year i didn't test my ST80 with ASI1600mm yet and using a reducer, when i did that late it changed my mind and plan completely, and i felt like i regret ordering that 90mm, but i didn't want to cancel the order, and good i didn't, the scope is nice, but the FOV i've got from ST80 [400mm] + 0.8x blown me away, and i still want more, because i also have Canon 300mm F2.8 which is very slightly wider than ST80 + 0.8x [320mm], so suddenly i felt like i want to make my 90mm F/6 [540mm] that much wide also, impossible to go wider than 320mm anyway, so the only way is to buy a reducer like 0.65x or 0.6x to make it 351mm or 324mm and use APS-C, that will match nearly 270-290mm with 4/3" sensor, i mean match as FOV, very slight different that nothing a software can fix or correct or crop anyway and dither.

5. Askar FRA400 is a quintuplet, so i can use it without any reducer or flattener for corrected field, no need for those silly calculations, even if i use their reducer it will give me 280mm, a perfect FL with my QHY294M, so what is left is QHY163M and ASI1600MM, i want to have one scope for any of them but not expensive because i am spending on that Askar FRA400, so i can't pay like $1000-1100 twice, if one scope will take $1000 then the other must be less, almost half.

6. If i use APS-C color with that 90mm F/6 triplet with reducer for RGB, and if i buy Askar FRA400 with reducer to use with QHY294M for let's say Ha then that will leave ASI1600mm/QHY163m for something like OIII only or Lum/LP filter only, SII i can put it anywhere between the two, so that was the plan, one scope doing RGB from color camera, another scope with mono for 1 NB filter, the other is also another 1 filter NB, lum /LP filter can be just addition, necessary or not it depends on targets and what i want, i can always find a place for this filter.

So from all points above i explained what i am trying to do, having many scopes will always helping me for more data at same time, many recommended me to go with RASA for example or even SCT and Hyperstar, this route is more expensive for me and it won't give me FOV i want, it only give speed at higher cost, speed isn't what i want, but more time data with FOV i want, i have Canon 135mm F2 that i used at F2 and it didn't solve what i need, so F2 or speed is not the answer i look for, and even with speed i must use only one camera and one scope and do filters one by one, many nights i can't continue all filters as well and i don't go back to complete, RGB is shorter but NB is longer, sometimes even with F2 i need hours for each filter, i live under Bortle 7/8/9, so the best way for me is to shoot all or many filters in the same time, so i still have something in my hand to play with, some targets i can be done with only Ha and OIII only, and by the time passing the more filters i use at same time the more data and targets i can finish rather than i spend 1 week or 1 month to finish 1 target fully.

I hope you can see my plan i am trying to do, i am happy with this new 90mm scope, still testing it, i didn't post any results from it here, but i did on Facebook where many people say my results even simple, i have 6" F/4 Newt which is 600mm, i can match this with 90mm F/6 540mm also, only left is 8" F/5 Newt which i will find another scope to pair with it later, first i want to finish the WIDE field first in 270-300mm, i think Askar FRA400 is a good choice, i saw amazing results from it, unless you will recommend me to ignore it and buy smaller cheap two scopes to give me something 270-300mm then i hope that is your recommendation, don't worry about multiple system, that is my business and challenge i can face and manage, people just only to give me choices of gear, not how to use it or issues, because all can have issues anyway even high end.

Sometimes it is not necessary to have all high or best level to match them all, mixing expensive with cheap isn't a bad idea and it won't make issues, because many scopes these days are great enough and affordable, in fact this 90mm Triplet i have is cheaper than some smaller aperture triplets, so it is not about the cost, i can have something cheap and it delivers the quality, and i can have high quality equipment but i fail to make it up to its quality.

You forgot the point i mentioned earlier above, that if i have multiple system then one can cover the other issues, for example, using Ha even an achro can be an amazing scope, so instead of an achro i buy ED or FPL-53 doublet/triplet cheap scope, why this won't give me quality and i must buy your choice of 71 Petzval? I can show you results from that Askar FRA400 from here and that will make difficult time for you to find difference of quality or results between this and 71Q for example, so both will do the job, i never mentioned FRA400 until i made my homework around, not only this site, and Askar FRA400 is a new scope while TS 71Q isn't, and someone mentioned that even TS isn't a brand which you can really blindly trust completely.

I ordered my 90mm FPL-55 last year by September, i got it delivered this year by April, i have patience, but my patience already reached limits now, so i waited for one scope and one camera, i don't need to wait again for other things, i can have that Askar FRA400 to be delivered in shorter time, i have places to buy from, in fact after i ordered this 90mm from TS i decided i will not buy from them again, because i chose DHL shipping i paid a lot and they changed that to FedEx which they forced me to pay another cost same of the shipping i paid, so it is like i paid twice for shipping, and TS didn't do anything about it, their shipping is always expensive for me, that made me to decide that i will not buy from them, i will avoid so many if not all Europeans online stores, i keep only one i know, so i am not interested in another TS scope for now.

I can think about 70mm Petzval only if i can afford APS-C mono later, but i can't tell when that will happen in future, i don't want to hold on uncertainty, and i think what i have are great enough and i don't need to keep upgrading to expensive and larger things always, this QHY294M is still new and i still didn't test it under stars, and APS-C color is also new i got it i think last month or 2 months ago, so those two have pairs already, i don't need to give up the other two cameras so fast yet, and because of their small sensor i find out that the only scopes i want to use with that is something giving me anywhere between 260mm up to 290mm, i even didn't mention 250mm because that is RedCat which i don't want or 300mm because i have Canon lens of 300mm, i want to have a scope flexible, that i can use a reducer to bring it to 270-290mm somehow, can that TS 71Q do that? i won't go buy it and buy APs-C mono later, too much spend already, i will have a budget this month so i have to make sure i buy something to use for long time without upgrading/replacing in future, i don't plan to buy something to sell them later after 3-5 years, even my ST80 i won't sell.

My 6" F/4 Newt is from GSO, this is like the reference, i am sure even TS is manufacturing by them, many told me that GSO is giving design to others including TS and Apertura, Orion and Skywatcher are same manufacturer, and i didn't see anything special from TS Newt except they change the color and provide better focuser which i can do and flock the tube inside which i can do also, so paying more for things i can do maybe same or cheaper, the mirrors are the same, GSO mirrors are very good, my 8" F/5 is from Meade a discontinued model, and believe me, both are doing fine, i like the quality, this is with very simple short imaging time, i am sure they can do a lot if i put them in serious use, i can't afford so so many things as high quality even in years, my situations are always varying that prevent me to secure my astro buying anyway, i might even stop at some points as i did with photography who knows, so for now i think if i can have something of moderate price and cheap it will do the job, most of the time it is the mount issue and guiding and filters and camera more than scopes to be honest, i produced some simple images from my SW ST80 Ha that is nice, if that is an achro cheap one did it, what do you think about cheap scope but a triplet or ED/FPL-53 doublet can do then?

You still didn't answer me about that 270mm-350mm FOV scope choice, my only APS-C i have i will use with 90mm triplet with reducer, now if i go with your choice of TS 71Q or any equivalent scope from another brand and use it with APS-C, it means my 90mm triplet is out of use completely, so the what i can use QHY294M with? and what i can use QHY163M or ASI160mm with?

Good you have good experience with TS company so far, i bought only twice from them, and in both times i spent a lot, so that isn't helping me at all if you are happy with them, i might buy from them again in future who knows, but for now i will try my best and hard to avoid them and buy from another sources cheaper, unless they can bring shipping lower, or have prices lower without tax/vat as i am out of Europe anyway.

I have to decide on a scope(s) quickly, i was hoping to think about a third scope next to FRA400, but now the conversation with you it makes like i have to cancel that FRA400 then, now if i have a budget of say $1500-1800, which two scopes i should buy that giving me wide field for 4/3" sensor? And wide field with 4/3" i mean wider than 300mm, but not too much wide as 240mm or even not 250mm, and i hope this scope ot two can give me two FLs, one as wide in 270-290mm and longer at something 350mm-420mm for example, if you know such a scope or two for 4/3" please let me know.

Well at this point, you could also try something like the ED90 or the ED72 from Artesky, they are around 600/700 the OTA (discounted from 650/900) and the reducer/flattener will be not more than 200 i think...
This as advise for your "cheap" part of the setup (as i told you i would spend the whole budget for a single OTA and wait)... Artesky put very much attention on the quality (i had a very interesting conversation with the owner once).
I would not go for ED glasses, but again going for FPL53 will greatly increase the cost.

For the VAT, did you try to request directly TS for a solution ?
otherwise FLO from UK has directly VAT reduced prices at checkout...

OK, now i see where the problem is

I was referring to ED as triplet or petzval, not as doublet, for doublet i only think about FPL-53.

I bought my 90mm triplet after years of searching and asking, in fact in 2018 and 2019 i was planning to buy Takahashi FSQ-106 and also 20" dobsonian, all that just vapored and smoked in the air and my dreams vanished, so now i am trying for alternatives, i was using ST80 an achro since 2017, and this 90mm is first APO triplet to have, i do have two Newt, but they are for different approach themselves as well.

My 90mm triplet is FPL-55, i thought that it is better and newer than FPL-53 following a logic of FPL-51 and FPL-53, but i read that FPL-53 and FPL-55 are very very much alike with 53 slightly more, so i didn't make this as a big issue, happy with my new 90mm, because not just the optics quality but the OTA design quality as well, so that i want to keep into having good optics/OTA as much i can, my both Newt are so so cheap, but they still can deliver amazing results, so cheap price never speak about full story here.

That FRA400 is a quintuplet, so even if the optics isn't Fluorite or FPL-53 it is still can deliver nice results, in fact i asked in 2 or 3 forums one is popular about having a FPL-53/Fluorite doublet or ED/FPL-51 triplet, almost 98% voted for ED/FPL-51 triplet over FPL-53/Fluorite doublet, that alone making things different, i can't afford FPL-53/Fluorite triplet/petzval at this point, so i try to see other alternatives cheap enough but good enough, my 90mm triplet is cheaper than Stellarvue 80 or Esprit 100 but it still delivers nice results even from one or two times test, so i have to keep going and add more, and because my budget is limited i try to make another choices at that budget and no regret, but i also keep thinking about FOV i want to try to achieve, in next post/comments i will show you what i am trying to do or talking about so then you can understand better.