Test TS-Optics 150mm FD4 ONTC Newton ?

Equipment
9 replies•567 views
Yin_Zhen avatar
Yin_Zhen avatar
Hello !

Has anyone tested this tube ?
https://www.teleskop-express.de/shop/product_info.php/language/en/info/p12848_TS-Optics-150-mm-f-4-ONTC-Newton-Teleskop-mit-2--RAP-Okularauszug.html

Thanks a lot !
andrea tasselli avatar
andrea tasselli avatar
The optics yes the tube and mirror cell no.
Yin_Zhen avatar
Yin_Zhen avatar
andrea tasselli:
The optics yes the tube and mirror cell no.

Thanks !
You mean that the optics is good and the mirror cell is not good ?
Chris White- Overcast Observatory avatar
Chris White- Overcast Observatory avatar
Thats so cool that they are making a 6" ONTC now!  I used to have an 8in ONTC several years ago.  I asked Wolfi to make me a 6in, and after 6 months with my deposit they refunded me and told me that they couldnt pull it together. 

Looks like they have decided to do it!  I bet this is a wonderful little scope.  Balance will be tricky, so the focuser and camera will likely need to be on the top of the scope when mounted. 

I loved my 8in ONTC.  The only thing that was a must to replace was the focuser.  It was pretty poor back then.
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andrea tasselli avatar
andrea tasselli avatar
andrea tasselli:
The optics yes the tube and mirror cell no.

Thanks !
You mean that the optics is good and the mirror cell is not good ?

Optics are good but I can't say anything about the rest as it is different from my Photon. I'll hazard a guess about the cell as being from OOUK so it should be good enough.
Yin_Zhen avatar
Yin_Zhen avatar
andrea tasselli:
andrea tasselli:
The optics yes the tube and mirror cell no.

Thanks !
You mean that the optics is good and the mirror cell is not good ?

Optics are good but I can't say anything about the rest as it is different from my Photon. I'll hazard a guess about the cell as being from OOUK so it should be good enough.

Thanks !
Yin_Zhen avatar
Yin_Zhen avatar
Chris White:
Thats so cool that they are making a 6" ONTC now!  I used to have an 8in ONTC several years ago.  I asked Wolfi to make me a 6in, and after 6 months with my deposit they refunded me and told me that they couldnt pull it together. 

Looks like they have decided to do it!  I bet this is a wonderful little scope.  Balance will be tricky, so the focuser and camera will likely need to be on the top of the scope when mounted. 

I loved my 8in ONTC.  The only thing that was a must to replace was the focuser.  It was pretty poor back then.

Thanks !
I do not like to place focuser on the top. Quite ugly ! And not as good as on the bottom from a mechanical point of view. Moreover, it will be a huge problem for my guide scope.
Perhaps a little counter-weight  could help ?
andrea tasselli avatar
andrea tasselli avatar
I got mine on top as I need it there to coĺlimate the scope, beside it being awkward to reach manually when focusing. Never noticed problems when guiding.
Reg Pratt avatar
Reg Pratt avatar
I have a 10" F4 ONTC and its rock solid. 7mm thick tube. Pretty sure they use the same thickness tubes for all ONTC sizes but a quick email to them can confirm. They use GSO optics but not the holders. Having also had a GSO newt I can tell you that the holders on the ONTC are vastly supperior. Only issue I have ever encountered is the primary mirror clips needed tightening but zero issues since then. I went with the 2" Feather Touch focuser and GPU CC.
Helpful
Yin_Zhen avatar
Yin_Zhen avatar
Reg Pratt:
I have a 10" F4 ONTC and its rock solid. 7mm thick tube. Pretty sure they use the same thickness tubes for all ONTC sizes but a quick email to them can confirm. They use GSO optics but not the holders. Having also had a GSO newt I can tell you that the holders on the ONTC are vastly supperior. Only issue I have ever encountered is the primary mirror clips needed tightening but zero issues since then. I went with the 2" Feather Touch focuser and GPU CC.

Thank you for your answer !
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