Now the dimension of the comet holmes is the same as the moon size. But only at the sky, but not in reality. Canon EOS 20D, Refraktor 100/1000mm, Comet Holmes 1600 ASA, 180 Secondes exposure

My view to the North is blocked by trees, so I hadn't seen Comet Holmes until Tuesday night, when we went up to Mangrove Mountain pony club for some dark sky time. The view to the North there was pretty good, but there were still trees which blocked about 4.5° up off the horizon. We got our first visual look at the comet through binos, and wow it was large, but diffuse at the same time. So here's Comet Holmes, at 12:40am 14th November at 5° altitude. Unfortunately trees still blocked most of the view, because the refractor is shorter off the ground than my height - so even though I could see it clearly while standing, the refractor could not. Anyway, the trees give it a bit of atmosphere.. I would've liked the comet to have cleared the trees but i'll take what I can. Images taken with the ED80 & 350D, guided with the DMK. The first 1 is a stack of 3 x 60s subs. The second shot is a single 90s exposure just before it went behind the club-house at the Pony Club. All @ ISO800. I'm not sure if i'll get the chance to image this again, but I'll certainly try and get out again to take some widefield shots.

Canon 350D EFs 10-22mm lenz, f3.5 iso400, 90s exposure

Here are two shots of Holmes showing the large coma on the right, so large that it now passes in front of many faint background stars in its apparent path across the sky. This path is taking it closer to Alpha Persei or Mirfak which is clearly shown in the image on the left.

My daughter's first impression of the comet was that it was a (celestial) jellyfish. When we processed this image, we were amazed at the number of stars that can be seen clearly through this translucent comet.

On 12 November a blue ion tail about 4 degrees long was still well visible SSW of the huge grey dust coma. Photo details: 12 Nov 2007 20h30m-21h00m UT. 8 x 3min + 4 x 30 sec exposure. FujiS3 @ 800ISO. f=135mm f/2 @ f/2.8 field 5 x 5 degrees.

Tonight was the first clear night I was able to get out and image Comet Holmes. It was 2 degrees centigrade and it didn't take long for the equipment to frost up. Fortunately I was running with my new dew removal system that worked like a charm! When I looked in to the eyepiece I noticed how much the comet had enlarged and become much more diffuse. The head now has a beautiful "flame" appearance. Telescope: Televue NP101is 101mm/5.4 Sensor: Meade DSI Pro Exposure: 15 stacked exposures of 30 seconds using MaxDSLR; fine tuning using Adobe Photoshop CS2

Canon 350D,ISO 400.20 exposures of one minute each stacked and aligned in images plus

17P/Holmes comet+Mirphak+satellite Pentax Sduf II Canon 20D modif. exp.120 secon. 800 asa 14 Nov. 2007 h 17:45 T.U.

The snapshot is made by November 11, 2007 UT 16h. A telescope, diameter of 100 mm, F = 1000 mm. Canon 350D. 53 staff for 30 seconds is combined.