focussing issues !

[king-jaffethehutt]

Hi Folks

I have been looking at the night sky for a good few years now on and off. I have however not done it with any real conviction...untill now that is !.

I over the last 2 months been lucky enough to purchase two excellent bargains. an as new 127 skymax with autotrack £190 and 150p -flocked 750mm F5 on eq3 for £160.

The 127 is awesome and mint, but the 150 had a lot more use (few scratches on the tube from the rings and small dent one tube).

I got some black gloss vinyl and have covered the scope (looks good) cleaned the mirrors etc and collimated them too (1st time) all seems to be well maybe a few minor tweaks to get collimation perfect.

The thing is that the 10mm supplied eyepiece will not come to focus, there seems to be insufficient travel in the focusser

Being a novice on the tech side, i wondered if it may be down to the collimation? as I would not have thought they would be sold with eyepieces you can not focus

Please help loungers you my only hope

p.s sorry for this epic post

[Chris H]

Is it in focus or out focus you require? If it's in focus you could try lowering the primary mirror a little, if it's out focus try raising it or try an extension tube.

[king-jaffethehutt]

Is it in focus or out focus you require? If it's in focus you could try lowering the primary mirror a little, if it's out focus try raising it or try an extension tube.

It's out focus that it needs. I have thought about extension tubes, I would just be unsure if they would sell an eyepiece with a scope that couldn't be focussed without them.

Ii have a Tal that use's extension tubes, the literature that use's states achieved mags with tube & barlow. The 150P states mags for the 10mm and no barlow etc at 75x this must therefore be able to be focussed

will check the focus travel and mirrors though

[hemihaggis]

hmmm .... sometimes with newts , there are removable ,bits on the end of the focuser , for a dslr ect try choping and changing them , usually the problem with focus on a newt is not enough intravel .....

[king-jaffethehutt]

Thanks Hemi - you were on the right track I stripped the focusser down and it turned out that focussing track had been attached the wrong way around there was more travel into the scope than out, must have been done by previous owner.

All sorted now, Happy Days!!!

Rgds

King-jaffe

[hemihaggis]

Hehe , glad to be of assistAnce , how are the skies looking for tonight down your way ?? Cheers

[king-jaffethehutt]

Re: focussing issues !

Hehe , glad to be of assistAnce , how are the skies looking for tonight down your way ?? Cheers

At the moment awful!!!! Looks like it'll be a wet one here. what's it got instore for you ? any better?.

When it has been clear recently it's been windy or really bad with dew

Thanks again.

King-jaffe