I have an old image of Comet Holmes that I managed to process during the Xmas. This was a mosaic of 9 fields, reduced by a factor of 4.
The FOV is 45' x 45', north up.

Holmes diameter is 35', larger than the Sun & Moon. Physical size 2.5M Km.
A mosaic of 9 fields was needed to cover the full extent of the disc halo. The infrared shows more detail at the core.

Mosaic of 9 Fields. 0.4m SCT f/5 + Apogee CCD AP7p Each field: Luminance = 1 minute exposure (6 x 10 secs) Infrared or I = 2 minute exposure (4 x 30 secs)

From Webtreatz:


Eamonn A

MOD: Edited by Seanie Morris as incorrect link was inserted.

Very nice Eamonn, its looks quite diffuse and has a good bow shock in that pic.

Great shot Eamonn.

Hah, my first bit of clear sky this year came past this evening so I wrapped up nice and warm and took the camera out, worked around the fault it has developed and got a stack of 6 RAW shots from which I extracted this shot....

Holmes is still not finished!

This stack of 8 x 30s RAWs 135mm lens f2.8, cropped also shows M34 and Algol.

Paul

Thats about as much as i saw the other night with my bins. I'm sorry i missed Holmes at it's best but i'm just glad to have caught the tail end of it (so to speak).