|
you can verify with star test. But your photo shows stars near M42 with a good round shape.
Any reflector has some coma at periphery. If the field of camera is centered in the edge of field of telescope, you will see much coma. The camera must be centered with the field of telescope to capture the best image.
The image at center of field of the telescope and the image at center of field of sensor of the camera.
|