After cleaning & collimation, I tested the C11 with the Starizona F 7.2 reducer, the ASI183mm (way oversampled obviously), and guiding using a simple external 8×50 guider and the ASI290MC. Just as a test not bad. I’m not convinced the mirror shift did not have influence in this image. Focusing was a pain, needed to be done manually.
![](https://i0.wp.com/www.drogenberg.be/wp-content/uploads/2020/04/M66_C11_RGB_ASI183_46x120s_G111.jpg?resize=525%2C369&ssl=1)
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