[BerrieK]

Just wondering if anyone can help me with a little 'problem' I seem to have.

I am a relative newby to skywatching so forgive me if my question appears silly.

I have a 10" f5 Skywatcher relflector and have been expanding my eyepiece range. After research (or so I thought) which suggested that for fast newts these should be ok, I decided to splash out andpurchase to Baader Hyperion series (3.5mm, 5, 8, 13, 17, 21).

Nice viewing tonight so I get them out to play. Alas, disaster! Using ANY of these eyepieces I am unable to rack my focuser out far enough to focus correctly (looking at Jupiter)! So I checked with my 30mm GSO superview...beautiful views. I removed the 1.25" part of the 17mm Baader and just used to 2" portion (with obvious alterations to focal length) and it was ok.

Can anyone please explain to my why this might be happening and if there is any solution other than putting my tail between my legs and asking if I can return my beautiful new pieces.

Thanks!!