Best Astronomer. ???

[JohnSadlerAstro]

Hi,

Just realized why my 130P-DS's primary wouldn't align unless the cell was tilted by about 1 cm. One of the locking tabs had slipped right off. And I never noticed or realized the issue for 5 months.  

Well at least I can collimate now....

John

[LukeSkywatcher]

Well this thread certainly isn't what I expected. I thought we were being asked to name the best/our favourite astronomer. 

Everyone knows it's Copernicus. 

[Stu]

Uh oh, that must have been confusing until you worked it out!

[JohnSadlerAstro]

On ‎20‎/‎05‎/‎2018 at 07:34, Stu said:

Uh oh, that must have been confusing until you worked it out!

It was! I finally decided that it was mechanically impossible for a telescope to be as poorly collimated as mine unless there was some issue with the cells.

Presumably one of the locking tabs must have slipped when I was replacing the cell after putting in flocking. In theory, the telescope was actually collimated for the last 5 months, but it's likely that the loose mirror would have shifted about as the scope moved. I tried relaxing all the bolts and then re-collimating, and it seems to have worked out fine.

John 

[Astrobits]

I always associate BEST with a good English breakfast............Bacon,Egg,Sausage,Tomato

Ill get me coat now.

Nigel

[LukeSkywatcher]

43 minutes ago, Astrobits said:

I always associate BEST with a good English breakfast............Bacon,Egg,Sausage,Tomato

Ill get me coat now.

Nigel

Good thing you don't have a full Irish:

Bacon, sausage, egg, tomato, mushroom, baked beans, black pudding, white pudding, hash brown. 

Try making a word with those letters. Ha this is like Countdown. 

[Uplooker]

26 minutes ago, LukeSkywatcher said:

Good thing you don't have a full Irish:

Bacon, sausage, egg, tomato, mushroom, baked beans, black pudding, white pudding, hash brown. 

Try making a word with those letters. Ha this is like Countdown. 

You forgot the soda farls and potatoe bread

[JohnSadlerAstro]

40 minutes ago, LukeSkywatcher said:

Try making a word with those letters.

Hmm...

Here's an easy excuse!  

In all seriousness, though, I wonder how many people actually have this issue with their primary without realizing what it is. To be honest the mirror clips look rather small, and their tightening/loosening behaviours are very odd. I have heard of folks cutting down mirror clips, I wouldn't like to try that with the PDS. I'm going to have to keep an eye on them to make sure this doesn't happen again. @SilverAstro Yes I do still have that eye! #modding  

Probably with the larger variants of the line the clips are a bit more substantial.

John

[LukeSkywatcher]

6 hours ago, Uplooker said:

You forgot the soda farls and potatoe bread

That's up North over the border. Down hear its plain old toast.