Hi all,
My 12"Dob seems to be well collimated ( everything centred in the cheshire) but in the eyepieces the centre stars are perfect but the outer ones show like a tail. If i move my eye across the eyepiece i can get the tails to dissappear. If i defocus the stars the centre ones are nice and round with the black centre as are the outer ones if i move my eye across the eyepiece.
I'm only using the original eyepieces that came with the Bintel Dob.
Anyone got any ideas?
Perhaps i need a parracor?
Maybe just better quality eyepieces?
Maybe my eyes are stuffed?
Any suggestions are welcome.