Peter Drew

I have a set of WO binoviewers and have been pleased with them and the supplied eyepieces. 😀

It will clear as soon as Mars is well past its best and the current solar activity dies down. ☹️

The only way to reduce the friction to be overcome whilst adjusting is to prise off the side plates and back off tension on the grub screws and/or the tightness of the main pivot bolt itself. You should be able to rock the ALT portion of the mount by applying firm manual pressure. I have repaired/modified these mounts in the past by making and fitting a wedge shaped plate to the casting such that is presents a tangential face to the adjustment screw. 🙂

Hopefully! 🙂

Inspirational books, along with Webb's "Celestial Objects for Common Telescopes" 🙂

The bolts are not the origin of the problem, they are a consequence of the problem. The actual problem is a combination of factory overtightening of the DEC pivot and the unsuitability of the mount design profile where the adjusters operate in respect of the UK latitude. At our latitude and higher, the bolts operate a face that is ever increasing in slope rather than a tangential one. This causes the bolt to ride downwards on the slope thereby bending it if too much pressure is applied. Replacement with heavier duty bolts eliminates the bending but doesn't address the basic problem, they are no longer the weak link in the chain, this becomes the casting thread which can strip or possible damage to the adjustment face. 🙂

🌧️ ☹️

As a result, Bennu will collide with the Earth in 2216. 🙂

All my "stuff" is over 2 miles from the house. No, we don't have that large a garden! 🙂

Gong or nothing here either. ☹️

Up here in the NW we often use the main roads for kayaking. 🙂

Looking promising considering the precision of the test, a real star will confirm the exact alignment condition. At this stage it might be possible to just manually push the tilted component square. I had a look at my 90mm Bresser today, The objective cell is effectively separate from the dew shield and secured to the main tube by 3 screws, these are not adjusters and can be accessed only by removing the dew shield. Being an entry level telescope, Bresser would appear to have intended a factory set unit with no user adjustments. 🙂

Nice sketch, as usual Mike. What has particularly caught my attention with Mars this year is that every detailed report seems to include more and more named features that I've never heard of, let alone seen! 🙂

That should be plenty good enough for the focuser alignment on a F10 refractor. It still doesn't guarantee that the objective cell is square to the main tube. This would be obvious in a star test eventually. As long as nothing is actually broken, all else is fixable. 🙂

The dewcap or even the objective cell does look to be skewed. I actually have one of these, the dewcap does pull off revealing the screws that secure the objective cell. I would loosen these and then press the cell into contact with the main tube and then retightened in position. I think the offset laser spot is more likely to be due to the focuser end being out of square, this can be corrected by the same method as that of the objective. 🙂

All a bit of fun, contemplating what to do to combat an inconsiderate neighbour but mostly, to implement any such suggestions, would only exacerbate the situation and the OP is the one that has to live with the consequences. The best thing to do is to bite your lip and carry on as best you can, eventually things cool down and hopefully the neighbour might take notice of the soaring electricity bills. From a security aspect, I would sooner have a neighbour physically outside at night as a much more likely deterrent than a row of "helpful lights. 🙂

If the views through it look ok, it probably is. Difficult to tell the mechanical alignment from close up, a photo showing the whole telescope length would be helpful in this respect. 🙂

@soluara. Moon, planets, double stars and solar won't be much affected and I would recommend that you continue to do this as it will demonstrate that the neighbour has not "won". Also, continue with your considerate approach however tempting it is to fight back, it maintains your high moral ground and the long term effect of this can often work in your favour. Good luck. 🙂

Ooops, apologies to the OP! 🙂

I think Yu have been Konned!. 🙂

Careful that this doesn't create another issue! 🤔

Sill waiting here. (Sun, not lunch!) 🙂

For me, binoviewing for solar, lunar and planetary provides a big upgrade in visual performance and enjoyment. Bright DSO's also look more submersive albeit dimmer than monovision. Not everyone gets on with binoviewers though, best to try before you buy if possible. 🙂

This is true, but I think the summation effect that tends to enhance the brightness of a binoscope above that of a single unit may also apply to the summation of the two exit pupils of a binoviewer such that the light loss appears to be less than half. Also, some binoviewers split the light nearer to 60/40 which again gives an advantage over 50/50. 🙂

Celestron are selling them. 🙂