Category: Lunar log

Monday, February 13, 2006
Copernicus and Montes Riphaeus
On Monday January 9, between 16.00 hrs UT an 18.00 hrs UT, I observed a nine-day-old Moon and shot a few images of different parts of the lunar landscape. I used the TAL 200K combined with various eyepieces to observe the Moon visually. The eyepieces ranged from a 32m Televue Plossl to a 5mm Vixen Lanthanum.

For me, the most interesting features imaged were Clavius (previously published in this blog), Copernicus and Montes Riphaeus, and finally the Plato area (will be published in the near future). I used the Nikon coolpix 4500 and a 20mm Vixen Lanthanum eyepiece combined with a Baader IR/UV cut filter for the overview image of the Copernicus-Riphaeus area (images 2 and 3).
Posted by Math on 02/13 at 03:05 PM | (0) Comments | filed in: Lunar log | Print
Sunday, January 15, 2006
Beautiful Clavius
On Monday January 9th I observed the Moon for a few hours. One of my favorite regions, the Longomontanus-Clavius-Moretus region, lay near the terminator, and was beautifully lit. Clavius itself is a large crater (or is it a basin?) with a diameter of 225 km. On the floor of Clavius, I could not only see the well-known semi-circular row of craters (Rutherfurd, Clavius D, C, N and J) but also numerous smaller craters. Towards the southern rim I could see between 10 and 15 of these small features on the lava flooded floor of Clavius. On the crater’s circular rim I saw 4 smaller craters superimposed, Rutherfurd and Porter on the east, and Clavius K and L on the opposite side. This was also the first time I had a closer look at the walls of Clavius. There were numerous small craters visible, and some parts of the rim looked like they were more or less slumped and degraded.
Posted by Math on 01/15 at 10:26 AM | (0) Comments | filed in: Lunar log | Print
Friday, July 01, 2005
Schickard and Wargentin
On the evening of 22 April 2005 I shot an image of a few interesting features on the south-western limb of the Moon. There where however two that caught my immediate attention, Schickard and Wargentin.


Where to find Schickard and Wargentin

Schickard is a large old crater with a diameter of 227kilometres. When observing Schickard through a telescope, you will immediately notice the absence of central peaks or peak rings. You will also see
Posted by Math on 07/01 at 05:30 AM | (0) Comments | filed in: Lunar log | Print
Monday, June 06, 2005
Here's a nice image of Pythagoras (Rukl map 2), a large complex crater that is situated near the northwestern limb of the Moon. On the image you can see the central mountains throwing their shadow across the crater floor. This young crater with a diameter of 128 km and a depth of 5000 meters is a typical example of a complex crater with terraced walls, central peaks, and a relatively flat floor full of hills.

A few degenerated large craters surround Pythagoras. In front of Pythagoras, to the left, lies Babbage with on its floor two smaller craters, Babbage A and C. In front of Babbage lies a more or less rectangular degenerated crater South. This crater is very hard to detect on this image. Only the eastern rim is clearly visible. To the east and southeast of Pythagoras lies Anaximander and J. Herschel. These are both more or less degenerated craters as well. Towards the lunar limb you see the walls of two other craters lit by the Sun. These craters are Desargues and Pascal.

To find the Pythagoras area, start from Sinus Iridum (Rukl map 10) and move in north-northwestern direction across Mare Frigoris.

This image was shot on 22 April 2005 with the TAL 200K, a 20mm Vixen Lanthanum eyepiece, the Coolpix 4500 with 4 x optical zoom and two filters, the Baader Contrast Booster and the Baader IR/UV cut filter. Settings where shutter 1/30s, f 5.1, ISO 100. This image is the result of 10 stacked images (Keiths Image Stacker), processed changing the levels and applying unsharp masking.

Click on the thumbnails to enlarge.

image image

Posted by Math on 06/06 at 01:00 AM | (0) Comments | filed in: Lunar log | Print
Monday, May 23, 2005
Ghost craters, floor fractured crater

On May 11 2005 I observed Petavius and Rimae Petavius with the 8 inch TAL Klevtzov-Cassegrain. Petavius is a large, complex floor fractured crater near the eastern limb of the Moon. For a detailed observing report and a digital image of the Petavius area follow this link.


The next day, on May 12 2005 I joined Leo, a fellow observer who lives just down the road, to observe the Moon through his new telescope, the TAL 250K, a 10-inch Klevtzov Cassegrain mounted on a Lichtenknecker mount. The seeing wasn’t too good, but we still had a lot of fun observing the Moon, especially Petavius and the western Mare Crisium area with two ghost craters and some old capes. For a more detailed report and some digital images of the Moon and the new telescope follow this link.

Posted by Math on 05/23 at 08:31 AM | (1) Comments | filed in: Lunar log | Print
Wednesday, April 27, 2005
Mare Fecunditatis area

I added a detailed image of the Mare Fecunditatis area (including Vendelinus and Langrenus) to the Solar System section of my site. You can identify most of the larger features when you move the mouse-pointer anywhere over the image. For more details just follow this link to read the full story.....


Posted by Math on 04/27 at 02:02 AM | filed in: Lunar log | Print
Sunday, April 24, 2005
Oceanus Procellarum and the Aristarchus plateau

On friday 22 April Jupiter and the moon rose above our house around 20.00 hours UT. The seeing was good so I got the telescope out to observe the Moon. I was amazed by the colour of the Aristarchus plateau. I never noticed this before. It looked a dark grey diamond-shaped area with a hint of green.  The contrast with its surroundings was clearly visible, even at a low magnification. I include two images just to give you an idea.

The first image is the Moon and Jupiter, the second the Aristarchus area. On the first image, the Moon is over-exposed, to capture Jupiter as well. The image of the Aristarchus area is shot in black and white. I wasn’t able to capture the colour difference, but you see that the plateau is a different from its surroundings. On the plateau (Rukl 18) the Schroter Valley is clearly visible. Near the terminator you can see the remains of three large walled plains, Eddington, Russel and Struve (Rukl 17)



Posted by Math on 04/24 at 02:23 AM | filed in: Lunar log | Print
Thursday, March 24, 2005
Serpentine ridge, Posidonius, Atlas and Hercules

Here’s an image with some interesting lunar features. The Moon is about 5 days old. In the south you see the eastern part of Mare Serenitatis with a beautiful wrinkled ridge, looking like a snake with a forked tongue, the Serpentine ridge (Dorsa Smirnov). At the northern end of the Serpentine Ridge, lies the walled plain Posidonius, with some interesting features on the crater floor. Near the centre of Posidonius you can see a small crater, Posidonius A, surrounded by a few hills. Visually I detected a rille in the north-south direction near the western rim of Posidonius. There are more rilles across the crater floor, but I did not see them tonight (March 16th 2005). Posidonius marks the north-eastern border of Mare Serenitatis.

North of Serenitatis lies another dark area, Lacus Somniorum. North of Somniorum lies Lacus Mortis with the crater Burg at its centre. To the east of Lacus Mortis you can see the beautiful pair of craters, Hercules and Atlas, to the west you can see the rim of Aristoteles is lit by the Sun.


Posted by Math on 03/24 at 12:15 PM | filed in: Lunar log | Print
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