Quark problem...oh dear.

[pragmatist]

Having taken a backward step and gone from a Lunt LS60 to a Quark chromosphere with Altair Astro ED 60 F6 and a televue 32mm Plössl I am having terrible problems. I cannot for the life of me focus the disc sharply...it seems to rack out and is still a blurry disc. Could this be a faulty Quark??

 

[Pig]

It sounds as though you do not have enough focus travel ?

[pragmatist]

14 minutes ago, Pig said:

It sounds as though you do not have enough focus travel ?

Is there a remedy 

[Pig]

If is it outward travel you are running out of you can simply add an extension before the diagonal. If it is inward travel then that is more of a problem. 

[jabeoo1]

Try lifting the eyepiece out of the diagonal whilst keeping the view in the eyepiece at the same time.  You may find the amount of back focus needed by doing this. 

[jabeoo1]

You could also remove the diagonal & see if you can get focus by viewing 'straight through' to work out if in-focus is the issue. 

[fireballxl5]

send your Quark to me for evaluation, may take all summer?

[Stu]

Given that the Quack has a x4.2 Barlow built in it is almost certainly outwards focus that is lacking, ie you need an extension tube. As suggested, try holding the eyepiece above the Quack until you see how much you need.

[pragmatist]

Ok will give this a go. Time was limited as I had to get to work but will experiment later this week but yes it was outward travel.