Observing Log for 2005-11-17

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Location: Billingborough (South Lincolnshire, UK)
From: 2005-11-17 14:28 UT
To: 2005-11-17 14:40 UT
Equipment: Naked Eye
Temperature: 5.0°C
Humidity: 60%

A very clear day today, no visible clouds. Decided to have yet another quick look at the Sun with the naked eye and with the Solarscope to see how sunspot 822 was getting on.

Sunspot 822 with naked eye

Time: 2005-11-17 14:28 UT

Just like yesterday, sunspot 822 was immediately visible — no effort was required to find it. It was a very clear, dark spot.

Sunspot 822 with Solarscope

From: 2005-11-17 14:33 UT
To: 2005-11-17 14:40 UT

As seen in the Solarscope, 822 had more or less the same appearance as yesterday. However, the biggest pair of spots now looked like they had merged — I could see no gap between them. This made them look even more like a Mandelbrot set. There also appeared to be more small spots between the big pair and the smaller pair of spots (I first counted seven and then managed to make out eight while doing the sketch that follows).

Did the following sketch:

Sketch of Sunspot 822

Location: Billingborough (South Lincolnshire, UK)
From: 2005-11-17 20:35 UT
To: 2005-11-17 22:53 UT
Equipment: Naked Eye
Meade 10x50 Binoculars
Temperature: 0.2°C
Humidity: 64%

Very cold, very clear night. The Moon was just past full. Given that it was washing out the sky I decided to carry on with getting to know the Moon with binoculars.

General observing of the Moon

From: 2005-11-17 20:35 UT
To: 2005-11-17 21:30 UT

The first feature that really stood out, just a little in from the terminator, was the crater Langrenus. I could actually see the central peak through the binocular.

The next thing I noticed, north and east of Mare Crisium, is what looked like some sort of "channel" running SW to NE. It appeared to be a "slot" of shadow that seemed to cut into the sunlit part of the Moon, coming out of the terminator. I checked on my Lunar map but couldn't be sure what was causing it. I suspect it might have been something to do with Mare Anguis.

I then noticed that I could still clearly see the dark patches that I noted a couple of nights ago. I could count five "patches", they appeared to run round the "headland" that contains the crater Schröter. The last of the patches (working counter-clockwise) seems to be near or in Sinus Medii.

Noticed another crater with a visible peak that stands out well: Petavius. Also very visible, near Petavius, due to their floors being in shadow, are Hase, Adams and Legendre. The latter seemed to be almost touching the terminator.

Went back to Langrenus in Mare Fecunditatis. Near it I could easily make out Barkla, Kapteyn, Lohse, Lamé and Vendelinus.

Warm-up break

From: 2005-11-17 21:31 UT
To: 2005-11-17 22:01 UT
Temperature: 0.0°C
Humidity: 64%

Getting bitterly cold. Decided to take a warm-up break.

More general observing of the Moon

From: 2005-11-17 22:02 UT
To: 2005-11-17 22:26 UT
Temperature: 0.0°C
Humidity: 65%

Having warmed up a little I went back to viewing the Moon some more through the binocular. Spent some time working my way north from Mare Crisium. Cleomedes was very obvious, as was Geminus. I also thought I could make out Berosus, right in the terminator.

A quick warm-up break

From: 2005-11-17 22:27 UT
To: 2005-11-17 22:41 UT

Getting bitterly cold again — decided to take a short warm-up break.

Saturn, Procyon and end of session

From: 2005-11-17 22:42 UT
To: 2005-11-17 22:53 UT
Temperature: 0.0°C
Humidity: 65%

Came back out again after having warmed up but it was feeling very cold now. To the east I noticed that Procyon, in Canis Minor had risen above the roofs and, to the north of it and about as bright, I could see Saturn. Not too long now and it should be high enough at a reasonable hour that I can get the telescope on it.

I had a quick look at Saturn with the binocular. I obviously couldn't see any actual detail but I could see that it was very elongated when compared with a star.

By 22:53 UT the cold was really starting to get to me so I decided to call an end to the session.

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