Jrkoop4270

Hey I just bought a new Celestron Nexstar 8SE and I'm having trouble achieving a good focus. The planets approach focus but then start getting bigger again when I've gone too far. The best focus I can get is a fuzzy blob even with the tiniest movements in the focusing knob. Collumation looks good but I'm new to SCT's so maybe I'm wrong. I'll attach an example of the best focus I can pull with Mars. Also this applies to both eyepiece observing and camera.IMG_1530.tif