Loose Mirror?

[daz]

I moved the scope earlier this evening, and I noticed a small knocking from the mirror cell. I am making the assumption (without too much closer inspection) that it is simply loose, though I can't imagine how (but it might explain the collimation difficulty I had the other night :? )

Question is, do I need to worry about anything other than just re-tightening the bolt?

[GazOC]

Just retighten it Daz, it should be OK.

[daz]

Phew!

[The Warthog]

Screws do work loose, and it may very well explain the difficulty you had with collimation. In fact, didn't I say so at the time? :scratch:

[daz]

I think you did WH - pleased to report all is now as it should be

[paul t]

Hi Daz Which bit was rattling around? Is it the mirror or the mirror holder?

[daz]

Rattling is too strong a word, it was more like a slight bump as if something was not quite tight enough.

And guess what.....!

[paul t]

What......................?

[daz]

Something was not quite tight enough!

[paul t]

I had a similar problem a few years ago and tightend every thing up. But I ended up putting too much pressure on the primary which caused all sorts of image problems, I later found out it was called pinched optics. Just thought I could help!