Secret Still Observatory

'Star, star teach me how to shine, shine'

Aurora Borealis

The second aurora in 2024, just visible to the naked eye.

Mark

1 minute read

This image was taken at 00:14 BST. The aurora was visible intermittently between 8pm and 2am. Faint pink and green hues were visible to the naked eye. Cameras revealed much more. In less light-polluted areas the colours were much more vivid.

Moon Saturn Occultation

Occultation on 21st Aug 2024 at 4am

Mark

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Saturn disappeared at 04h27 and reappeared at 05h20 BST. Amazingly the blanket of thin swirling cloud lifted 10 minutes before the point of ingress. The night was very windy however and the atmosphere was extremely wobbly precluding any chance of capturing surface details on Saturn. The difference in brightness between Saturn and the Moon necessitated creating a composite image to show both bodies visually.

Mark

1 minute read

We had unexpectedly amazing views of the aurora at latitide 52 degrees N on the night of 10th/11th May 2024. It is clear that the activity is visible entirely in the northern portion of the sky. The intensity hit KP9/ Extreme storm (G5) on the KP scale, a reading last seen in 2003.

The Crater Gassendi

Sketch made on Moon day 11

Mark

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Sketched with white and black charcoal on black paper at the eyepiece over 30 mins between 20h and 21h UT. Again, the sketch was started before the fall of darkness which makes the initial outlining of the main elements on the paper somewhat easier. It was a dramatic sight in the low, slanting light at the Terminator. The terraces on the the crater walls were visible at times though no detail on the surface of the central plain was evident in the conditions.

The Crater Archimedes

Sketch made on Moon day 8

Mark

1 minute read

Sketched with white and black charcoal on black paper at the eyepiece over 30 mins between 20h and 21h UT, so the sketch was in fact started before the fall of darkness. Archimedes lies exactly on the illuminated side of the terminator.

Mark

1 minute read

Photographed with the Moon at first quarter at precisely the day/time that this transient effect is visible. I was looking along the terminator and attempting to identify some of the prominent craters when all of a sudden this jumped out at me. I swear that if I had tried to find it it would have taken hours! The effect is actually only visible for approx four hours or so on one day a month when the Moon is at first quarter (lunar day 6.9). The next date it is visible is the 17th March by my…

Mark

1 minute read

I thought it was worth trying sketching again considering the diabolical weather. This is done with white charcoal pencil on black cartridge paper (and so isn’t reversed in the scan). This I found actually much easier than sketching in pencil. It shows the craters Orontius, Saussure, Huggins, Nasireddin and Miller and is drawn from a photo taken at 21h15 on 28th April this year.

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