Observing Log for 2006-10-24
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2006-10-24


Location: Billingborough (South Lincolnshire, UK)
From: 2006-10-24 14:15 UT
To: 2006-10-24 14:20 UT
Equipment: Solarscope
Temperature: 14.6C ...
Dew Point: 7.6C ...
Humidity: 63% ...
Wind Speed: 2.9mph ...
Wind Dir: West ...
Pressure: 996.8hPa ...
Notes:

Partly clear afternoon, quite cool and breezy too. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2006-10-24 14:15 UT
To: 2006-10-24 14:20 UT

Active area 917 was still visible, now quite close to the limb of the Sun. I could see three small faint spots.

Location: Billingborough (South Lincolnshire, UK)
From: 2006-10-24 20:30 UT
To: 2006-10-24 22:15 UT
Equipment: Meade 10x50 Binoculars
Antares 905
Temperature: 9.1C ...
Dew Point: 5.8C ...
Humidity: 80% ...
Wind Speed: Calm ...
Pressure: 1002.1hPa ...
Notes:

Reasonably clear night but appearing a little unsteady at times. I was caught out by it, I wasn't expecting it to be clear. Having noticed in Starry Night that Uranus would be well placed for viewing from my garden I decided to pop out and see if I could view it.

Uranus

From: 2006-10-24 20:30 UT
To: 2006-10-24 21:20 UT

First off I used Starry Night to figure out exactly where Uranus was in relation to easily spotted star patterns. After I was happy that I'd be able to find it I went outside with the 10x50 binoculars and tried to track it down. I was surprised to find that I could see it with no problems whatsoever.

Uranus was near to, and down and to the right from, Lambda Aquarii. Lambda Aquarii was quite a fascinating object to see in itself given its vivid red colour. In relation to the surrounding stars Uranus, while obvious given that I knew where it should be, didn't stand out as being a planet. If I hadn't known what I was looking for and where I was looking for it I would simply have thought it was just another star.

Having seen it with the 10x50s I decided to get the Antares 905 out and have a look at it through that. After setting up the 905 I started out with the 25mm eyepiece and got Lambda Aquarii in the field and then centered on Uranus. I then worked my way up to the 6mm eyepiece, keeping Uranus in the center of the field of view as I went.

By about 20:50 UT I had Uranus and TYC5813-273-1 in the field of the 6mm. Even at this magnification I would have thought that I was looking at 2 stars if I hadn't already known one of them was a planet. Initially there was no hint of any kind of disc and I could detect no obvious colour.

The observation probably wasn't helped by the fact that, at the elevation of Uranus, the sky was a little murky and sometimes quite unsteady.

After some more viewing, especially when comparing it with TYC5813-273-1, I began to detect that Uranus wasn't a point-source but was actually a very small disc (at least I think I could see that, I don't think it was wishful thinking).

Around 21:08 UT, after scanning the area around Uranus and memorising some of the closer stars, I went back into the office to double-check what I'd seen with Starry Night. The main feature that stood out was two starts, sort of close together, just south of Uranus. I could see them in Starry Night (they were TYC5813-519-1 and TYC5813-814-1) and this confirmed that, without a doubt, I was looking at Uranus.

I also noticed in Starry Night that TYC5813-789-1 was very close to Uranus but I never did manage to see it through the 'scope.

After doing the above checking and after memorising the general pattern of starts around Uranus, at around 21:15 UT, I went back out and put the 10mm eyepiece in the 905 and checked everything again. Everything matched and there was no doubt that I'd found Uranus.

Random viewing

From: 2006-10-24 21:25 UT
To: 2006-10-24 22:15 UT

Given that I was out with the 905 and given that the sky wasn't too awful I decided to stay out a bit longer even though I managed to achieve my aim for this session. Because I didn't really have any other sort of plan I decided to just randomly sweep around the sky looking at whatever turned up or took my fancy.

First off I tried to have a look at M31 with the 905. Annoyingly, because it was so far overhead, I couldn't get the 905 in a position where I could view it, the mount kept getting in the way. So, instead, I turned it on the Double Cluster in Perseus (also known as Caldwell 14 or NGC 869 and NGC 884).

In the 32mm eyepiece it was a nice rich star field, just the sort of thing I'd purchased the 905 for. Both clusters stood out very well against the very starry background and the line of starts that runs away from the area of the cluster stood out really well.

At around 21:43 UT I noticed that the sky was looking quite nice now. Still a little hazy but it looked quite impressive. The Milky Way stood out really well — I think this is probably the best I've seen it for most of this year.

Given that I couldn't get the 905 trained on M31 I decided to have a quick look with the 10x50 binoculars instead. Even though I was only holding them with my hands it was a very impressive sight. The more I looked the wider it appeared to get. I think this was probably the best view I've had of that galaxy since I started observing again.

While I had the 10x50s to hand I next had a look at M45. It looked very clear, very bright and the "mini cascade" in it stood out really well. I think this was probably the best view I've had for a long time.

At around 21:55 UT, while sweeping around Cassiopeia with the 10x50s, I saw a pretty obvious cluster of stars about way between Epsilon Cassiopeiae and Delta Cassiopeiae. Checking with my maps it turned out to be NGC 654 (also known as Caldwell 10). Checking back I have observed this before. It looked like a slightly fuzzy but loose collection of stars. Last time I observed I remember thinking that it looked more like a globular cluster but this time around it was obvious that it was an open cluster.

Starting around 22:05 UT I did a bit of aimless sweeping around with the binoculars, just taking in the beauty of the sky. However, it was starting to get colder and damper (dew was forming on everything) and given that I wasn't really dressed for the conditions (I had, after all, intended to just pop out for a quick look for Uranus) and that I really needed to get off to bed I decided to call an end to the session at 22:15 UT.


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Dave Pearson <davep@davep.org>
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