Well solved the coma problem it was the spacing between the MPCC and the chip just needed a 25mm and 14mm spacer to make up the 55mm spacing for the MPCC on the Sbig STF8300C thanks Michael from Bintel .
now I should have perfect stars across the field
as soon as it is all going again I will post some images but got to say I love this scope even with the coma the image in the centre was very crisp and sharp .
and the G11 handles the weight very easily and a big bonus is I use a William Optics mini guider and the guiding on PHD2 is superb compared to the LX200 SCT at one instance on my test I got a 10min exposure guided and the stars are perfectly round .
one other thing I will get is a light shroud stray light can be a issue with such long exposures .
the wind was blowing at around 35klm to 40klm last night and even thou I am in a POD observatory it did no affect it imaging as it used to with the SCT
more to follow
cheers Pete
