Acrab67

Hi, I have a problem with my TS 125 refractor. I have only used it about 10 or 12 times, and on a couple of occasions the tube has lost collimation, only to recover it later. He has not received any blows or sudden movements. In both, the airy disk appears well defined, but clearly off center to the right. The image in focus was anything but punctual, opening a kind of fan to the left of the star point. It is not an instrument thermal problem or local turbulence. Last week after having the same problem I put it back in its box and sent it to APM telescopes as it is under warranty. Well, yesterday they told me that they have tested it on an optical bench at 300X, and the optical tube is perfect, no trace of lack of collimation, astigmatism, etc. I am clear that the tube randomly presents some optical-mechanical problem, but how is it possible that without any other manipulation it is kept in its box, travels half of Europe, and in an optical bench test it is found to be correct again? I am baffled, after 30 years of visual observation I have never seen anything like it. I have to say that Markus Ludes has shown professionalism and has offered to test it himself under a real sky. Any ideas?

I also use a TS 125 and am very satisfied with the optical and mechanical performance. Excellent value for money.

Yes, it appears that Skywatcher made a couple of design changes, including screw adjustment issues and a rubber base for the extender azimuth rotation issue. It is for use with an AZEQ6 GT in ALTAZ mode, and the SW tripod. I have replaced the stock legs for the tripod with others also made of stainless steel that are longer and 1.5 mm thick, that is, practically double

I'm going to use it for visual, and what I'm really worried about is vibrations when focusing and so on. Is the one you use the new model that comes with the rubber base?

Thank you. Yes, that was the first option I looked at, but from what I've read from some users it seems to be not very stable

Hi, Does anyone know of any extension tubes compatible with SW EQ6 mounts that are stiff enough and well designed so they don't introduce vibrations to the optical tube? I've been looking at this model from AstroMechanik, which at first glance seems quite robust, with 10mm thick walls. Does anyone by any chance use one of these? Thanks

Hi, Could you tell me the interior measurements of that briefcase Thanks

Has anyone done something similar to what was discussed in this post ?. Basically use the appropriate O-ring for self-centering of the piece that contains the screen-printed reticle of the polar finder in its housing. Does anyone know the exact size of the o-ring?. Does anyone who has disassembled the reticle know if the piece of methacrylate or glass where it is printed, fits exactly in the piece that contains it, or has some slack?

I have replaced the original tripod tubes with other 1.5 mm thick stainless steel tubes of greater length to adapt the tripod to use with refractors.

Hi, In my mount either

I bought my TS Photoline 125 through APM, and they do check the tube. Collimation and mechanical operation

I t is different product. A triplet instead of a doublet, 3,7" focuser, and optical test guaranteeing a minimum of 0.95 strehl

Ok, thanks

Thanks

Hi, Which Berlebach tripod do you think would be ideal for an AZEQ6 with a TS Photoline 125mm. Would the UNI28 model be enough or would we have to go for the Planet model directly? By the way, would someone be so kind as to tell me the width and thickness of the legs, both on the Planet model and on the UNI28? Thanks

Hi, Which Berlebach tripod model are you using in the photo with the AZEQ6?

It was bad seeing for sure. What made me wonder were the website Meteoblue seeing forecasts for my area. I do not understand how they give a forecast with a green value of 5/5, with a Jetstream greater than 30m / s, which is precisely the opposite indicator. Hence the twinkle of Sirius.

The truth is that I have very little experience with refractors, to say nothing. For more than 25 years all my tubes have been reflectors, from the first 114 mm to the last 16 ". Last night, observing Sirius at 75X with my new TS Photo Line 125 SD refractor there was one aspect that caught my attention, and it was that the focused star flashed around, I don't know how to explain it, it was impossible to make it completely punctual, and the higher the magnification used, the more remarkable the effect. The night was stable, and the tube had more than an hour of acclimatization with very little variation of room temperature. Later the Moon, in binocular vision, already 140X was simply sublime. Comment that for monocular vision I use a diagonal mirror 2” Baader Click Lock. In extra focus I do not observe decollimation of the optics, nor a trace of punctured optics, at least as far as my knowledge goes. Perfectly concentric circles. What do you tell me about this?

Last night I had the opportunity to test it a bit. In general the mechanical construction is excellent for the price we are talking about. Optically I could not evaluate it as I would have liked because the seeing was not accompanied, but being acclimatized and looking at the star test, I could not find signs of decolimation, punctured optics, or notable astigmatism. A bit of chromaticism with the star slightly out of focus, but nothing in focus. I remember observing the Moon with the SW 120ED and the Baader Morpheus 6'5mm, a subtle bluish line would appear. I didn't see a trace on the TS. Detailed lunar details with seeing in mind, with the Baader 6.5mm and Fujiyama Orthos 5 and 4mm. Point stars with good focus. Let's see if I have a good night later.

Thank you, I also received it in perfect condition and well packaged. I have bent the screws when I put the tube back in the box, don't ask me how. Anyway I already have a couple of new orders. It has been a minor thing

Well, the screws must have bent when I put the tube in the box. The truth is that I noticed that it just entered, but from there to bend ... I do not explain it either. What does a couple of quality screws cost to put such rubbish in anyway?

Thanks for answering. The distance between the fixing holes of the handle would be 225mm with the standard dovetail. It's going to be difficult to get. The screws are the ones used for locking 2 "and 1 1/4" eyepieces. They are literally butter.

Hi, Waiting for the first light when the weather permits.Does anyone know where to get a carry handle that fits this tube? I also have to change the knurled screws on the focus group, both of them have been bent inside the transport case.

Hi, Finally my curiosity piqued me, and I joined club. Yesterday, I order one of these optical tubes from APM's Markus Ludes (TS version).

My comment is not intended to ruin anything for anyone, moreover, I hope your telescope has exceptional optics. I only expose some aspects in relation to these tubes compared to the SW 120ED, in case someone else was in the same position when choosing between these two tubes. If you have been offended, I'm sorry, it was not my intention, All the best.