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All observing logs for month 2007-11 (earliest log first).

2007-11-01


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-01 19:21 UT
To: 2007-11-01 20:09 UT
Equipment: Naked Eye
Antares 905
Temperature: 12.3C ...
Dew Point: 9.6C ...
Humidity: 84% ...
Wind Speed: Calm ...
Pressure: 1028.6hPa ...
Notes:

Went out with the Antares 905 to get my first view of comet Holmes via a telescope.

Fairly clear night. No Moon. Bank of cloud visible to the west.

Comet 17P/Holmes

From: 2007-11-01 19:21 UT
To: 2007-11-01 20:09 UT

I quickly got comet Holmes in the 905 using the 32mm eyepiece. A very impressive sight. Large coma with an obvious bright patch in the middle, fading a little further out and then appearing brighter again towards the edge.

Despite some reports that I'd seen elsewhere I could see no hint of any sort of tail.

I added the Neodymium filter to see if it might help bring out any more detail in the comet. It did seem to reduce the "glow" of the background sky a little but I wouldn't have said I could see any more detail in the comet.

Next I switched to the 25mm eyepiece. The view didn't look that much different in terms of what I could see of the comet. The coma looked a little more "circular" with averted vision than without and I did get the impression that one side of the comet wasn't quite as bright as the other.

After a switch to the 10mm eyepiece the view was still good and it was now more obvious that the outer ring of the coma wasn't the same brightness, it was now very obvious that one side wasn't as bright as the other. This gave the impression that I was looking at something that had leading and trailing edges.

With the 6mm eyepiece (and with the Neodymium filter now removed) it was still a very impressive sight. The coma filled a large part of the field of view. The overall impression was still that there was a central bright era within a bright ring and the area between the two being less bright. I also started to notice that there was a hint of blue to the comet.

Even at this magnification, and also at the other magnifications mentioned above, there was no hint of a tail.

Looking at the comet with the naked eye I noticed that, compared to other recent views, the comet seemed a little more "fuzzy" than I'd noticed before. Also, once again, I estimated the brightness to be something close to Delta Persei.

Overall I felt that the best view was with the 32mm eyepiece. Via that there was a very definite sense of viewing a ghostly 3d ball of "smoke".

By 20:09 UT the sky was starting to get quite misty, it was obvious that the view was more "milky" as seen via the 'scope. So, given that things seemed to be going downhill and given that I'd have a good look at the comet I decided to call an end to the session.


2007-11-03


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-03 14:30 UT
To: 2007-11-03 14:35 UT
Equipment: Solarscope
Temperature: 14.6C ...
Dew Point: 11.2C ...
Humidity: 80% ...
Wind Speed: Calm ...
Pressure: 1026.5hPa ...
Notes:

Partly cloudy day. Hazy too. During a clear spell I took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-03 14:30 UT
To: 2007-11-03 14:35 UT

No spots or other marks visible on the Sun.


2007-11-06


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-06 13:30 UT
To: 2007-11-06 13:35 UT
Equipment: Solarscope
Temperature: 10.8C ...
Dew Point: 3.7C ...
Humidity: 62% ...
Wind Speed: Calm ...
Pressure: 1029.4hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-06 13:30 UT
To: 2007-11-06 13:35 UT

No spots or other marks visible on the Sun.


2007-11-09


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-09 14:10 UT
To: 2007-11-09 14:15 UT
Equipment: Solarscope
Temperature: 8.5C ...
Dew Point: -1.4C ...
Humidity: 50% ...
Wind Speed: 2.0mph ...
Wind Dir: West ...
Pressure: 1022.2hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-09 14:10 UT
To: 2007-11-09 14:15 UT

No spots or other marks visible on the Sun.


2007-11-12


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-12 13:50 UT
To: 2007-11-12 13:55 UT
Equipment: Solarscope
Temperature: 6.6C ...
Dew Point: 1.1C ...
Humidity: 68% ...
Wind Speed: 3.1mph ...
Wind Dir: North ...
Pressure: 1021.8hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-12 13:50 UT
To: 2007-11-12 13:55 UT

No spots or other marks visible on the Sun.


2007-11-13


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-13 14:15 UT
To: 2007-11-13 14:20 UT
Equipment: Solarscope
Temperature: 9.4C ...
Dew Point: 5.3C ...
Humidity: 76% ...
Wind Speed: 8.1mph ...
Wind Dir: West South West ...
Pressure: 1006.9hPa ...
Notes:

Cloudy all morning but cleared into the afternoon so I took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-13 14:15 UT
To: 2007-11-13 14:20 UT

No spots or other marks visible on the Sun.

Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-13 19:15 UT
To: 2007-11-13 19:38 UT
Equipment: Naked Eye
Meade 10x50 Binoculars
Temperature: 6.4C ...
Dew Point: 3.2C ...
Humidity: 80% ...
Wind Speed: 2.4mph ...
Wind Dir: North North West ...
Pressure: 1006.9hPa ...
Notes:

Moonless evening with some cloud rolling in from the west. Decided to head out with the Meade 10x50 binocular to have a quick look at comet Holmes while I had the chance.

Comet 17P/Holmes

From: 2007-11-13 19:15 UT
To: 2007-11-13 19:38 UT

Comet Holmes was still visible to the naked eye although, right away, I could see that it was more "fuzzy" and not quite so bright as the last time I observed it. It was also obvious that it had moved a fair bit since the last time I'd observed it. It was now fairly close to Mirfak.

It also looked a little different in the binocular too. While it was still circular looking, with no hint of a tail, it now appeared to have a bright "spot" in the middle of the circle and the brightness of the circle dropped off as you looked further out to the edge (the difference here being that the last time I observed it the edge of the circle appears to be quite bright compared to the rest).

I did notice that part of the edge still also less bright than the rest of the edge.

By 19:38 UT cloud had taken over so I packed up and headed back indoors.


2007-11-14


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-14 14:20 UT
To: 2007-11-14 14:25 UT
Equipment: Solarscope
Temperature: 8.9C ...
Dew Point: 3.0C ...
Humidity: 67% ...
Wind Speed: Calm ...
Pressure: 1017.3hPa ...
Notes:

Mostly clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-14 14:20 UT
To: 2007-11-14 14:25 UT

No spots or other marks visible on the Sun.


2007-11-15


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-15 13:35 UT
To: 2007-11-15 13:40 UT
Equipment: Solarscope
Temperature: 7.6C ...
Dew Point: 2.6C ...
Humidity: 70% ...
Wind Speed: Calm ...
Pressure: 1024.9hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-15 13:35 UT
To: 2007-11-15 13:40 UT

No spots or other marks visible on the Sun.

Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-15 19:19 UT
To: 2007-11-15 20:02 UT
Equipment: Naked Eye
Sky-Watcher Explorer 130M
Temperature: 1.5C ...
Dew Point: -1.6C ...
Humidity: 80% ...
Wind Speed: Calm ...
Pressure: 1025.6hPa ...
Notes:

Mostly clear and cold evening, some cloud around and getting increasingly misty. Waxing crescent Moon very low in the south. Decided to get the 130M out to have a look at comet Holmes.

Comet 17P/Holmes

From: 2007-11-15 19:19 UT
To: 2007-11-15 20:02 UT

At first glance I struggled to see comet Holmes with the naked eye. Only after some effort, and using averted vision, could I see a faint fuzzy blob somewhere near Mirfak. By the looks of things the comet had faded quite a bit since my last observation a couple of nights ago.

The comet was easy enough to find with the 130M and the 32mm eyepiece. It appeared as a large, blueish, ghostly and distorted circle. While there was still no sign of any tail the impression I'd had from previous observations of it being an incomplete circle, with one part of the edge being much less brighter than the rest, was even more obvious.

I noticed that it appeared to be relatively bright in the middle, fading further out and then getting a little brighter again towards the edge (other than the faded edge I mention above).

The overall impression I got was of a large faint circle where most of one half had been smudged away (I'm guessing this is the side where any tail is/would be).

Switched to the 15mm eyepiece and noticed right away that the comet was pretty much too big to fit into the field of view. Moving the main part of the comet out of view, and looking backwards from the "faded" part of the edge of the comet, I did get the impression that there was "something" there. A very slight hint of blue, a hint of colour, or something, that was a little different from the background sky. Could have been a hint of the tail but couldn't say for sure.

Switched to the 25mm eyepiece and this gave a better view than with the 15mm but didn't show anything different from what I'd seen with the 32mm.

Switched back to the 32mm and added the Neodymium filter to see if it would have an effect. While it didn't reveal anything new it did remove the blueish colour (which is probably to be expected) but it also seemed to make the comet stand out from the background sky a little better.

I could get both the comet and Mirfak in the same field of view with the 32mm, a really nice sight that I'm sure would have made for a great bit of astrophotography.

The overall impression I got was that the "main event" was over. It seems, from the view I had, that not a lot is being given off by the comet now and that the main shell of debris is expanding to the point that it won't be visible to be pretty soon.

By 20:02 UT the sky was starting to get a little more hazy and it looked like it was only going to get more and more foggy so, having seen what I wanted to see, I packed up.


2007-11-21


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-21 14:55 UT
To: 2007-11-21 15:00 UT
Equipment: Solarscope
Temperature: 9.1C ...
Dew Point: 6.5C ...
Humidity: 84% ...
Wind Speed: 1.7mph ...
Wind Dir: South ...
Pressure: 996.3hPa ...
Notes:

Mostly cloudy day. During a brief clear spell I took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-21 14:55 UT
To: 2007-11-21 15:00 UT

No spots or other marks visible on the Sun.


2007-11-29


Location: Billingborough (South Lincolnshire, UK)
From: 2007-11-29 14:20 UT
To: 2007-11-29 14:25 UT
Equipment: Solarscope
Temperature: 8.5C ...
Dew Point: 3.9C ...
Humidity: 74% ...
Wind Speed: 2.6mph ...
Wind Dir: West North West ...
Pressure: 1002.6hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2007-11-29 14:20 UT
To: 2007-11-29 14:25 UT

No spots or other marks visible on the Sun.


Page last modified: 2013-04-09 09:19:19 UT
Dave Pearson <davep@davep.org>
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