Hi:
I just recently purchased a meade 12"lx200 gps. I am happy with the telescope but had a question. While performing a star test for optical perfomance, I noticed that The outside focus (clockwise) shows a definite and distinct diffraction pattern. However, the inside focus (counter clockwise) is "hazy" with barely visible diffraction rings. I had checked the collimation and it was pretty good. I had also allowed the scope to sit outside for about 30 to 45 minutes to adjust to the outside temperature. I live in a somewhat light pollouted area in CA. While in focus, the telescope image is good and clear. I was wondering if this test indicates a significant problem with the optics or somewhat expected from a meade SCT. Also, I will be using the scope for CCD imaging and will be using a 3.3 reducer and wonder if it will have any impact on ccd imaging. Any advice or information is greatley appreciated. Kindest regards
ashton
I just recently purchased a meade 12"lx200 gps. I am happy with the telescope but had a question. While performing a star test for optical perfomance, I noticed that The outside focus (clockwise) shows a definite and distinct diffraction pattern. However, the inside focus (counter clockwise) is "hazy" with barely visible diffraction rings. I had checked the collimation and it was pretty good. I had also allowed the scope to sit outside for about 30 to 45 minutes to adjust to the outside temperature. I live in a somewhat light pollouted area in CA. While in focus, the telescope image is good and clear. I was wondering if this test indicates a significant problem with the optics or somewhat expected from a meade SCT. Also, I will be using the scope for CCD imaging and will be using a 3.3 reducer and wonder if it will have any impact on ccd imaging. Any advice or information is greatley appreciated. Kindest regards
ashton
