Comet Holmes continues to amaze me. It is HUGE. I cannot see it with any sort of magnification - but can only view it in a low magnification, such as through a view finder or binoculars.
The image below was made with a robotic telescope in the Canary Islands, using one of their four telescopes: a Televue 85 APO refractor with a magnification of 50x.
When using a higher powered telescope - Slooh's 14 inch SCT with a magnification of 470x. Below is such an image, and all you see is the small nucleus. As you see, the coma has so disipated that it can't be seen at higher powers.