Star Trails, and Meteors

The Lyrids meteor shower — a remnant of Comet Thatcher, no relation — has started, and though it doesn’t peak until the 22nd April, the sky was clear last night so we thought it was worth seeing if the Dwarf Mini could image them. It has a “star trails” setting, which takes a load of pictures with the wide-angle camera, combines them and produces  a video of the result. We left it running for 3 hours (producing over 1000 photos) and got this:

At about 5 seconds, a pair of short trails appears at the upper right, which we’re fairly sure are meteors as they’re pointing directly towards the shower’s radiant in Lyra/Hercules. We’ll try again later, weather permitting; the night of 21st is forecast clear.
(Ignore the ghostly artefacts — it was shot from indoors through an open window and caught some reflections from the glass.)

A Nice Rosette

A couple of clear hours tonight, and here’s the Rosette Nebula, another pretty object near Orion:
I took 100 15-second shots with gain 90; 92 were usable. I used the dual narrow-band filter which is tailored for various emission spectra, namely hydrogen alpha and beta, and oxygen III. It also reduces sky pollution and any glow from the Moon, which was very bright tonight (and quite close to the Rosette nebula). Speaking of which:I was going to try out the “Star Trails” setting, included in the latest software update. But guess what? Along came the clouds…

Clear Skies, at Last!

And here are some pictures from our Dwarf Mini. All taken from our light-polluted suburban back garden, with a bright half-moon. The scope was plonked down on our patio table, and left to get on with it. No special mounting or alignment needed.
First (and best!), M42 aka the Orion Nebula:

The scope took 32 shots each of 15-second exposure, 28 of which were usable and stacked together. Quite remarkable, especially compared to our photo of M42 taken with a large professional telescope at COAA during our visit in 2001.
Next up, the Flame Nebula. A lot fainter, so needed a contrast boost:
Here’s Jupiter with the four Galilean moons, showing the Dwarf Mini isn’t really meant for planetary imaging. Left to right: Callisto, Ganymede, Europa and Io (checked with Stellarium):
And lastly, the good old Moon:
A2 is rereading A Scanner Darkly by Philip K Dick.

Dwarf Mini first light

A new toy! The Dwarf Mini is an ultra-portable smart telescope designed for deep-sky astronomical imaging. Controlled from a smartphone (in our case a Pixel 6a), it can track objects, take multiple exposures and automatically stack them to increase the image quality.

This hasn’t been a good time for astronomy here — we’ve had unrelenting gloom, rain and cloud cover for the last couple of months. But today, Valentine’s Day, the sky finally cleared enough to try the device out. The picture above is the sun, showing three groups of small sunspots. It’s a stack of 20 shots each exposed for 1/200s. The tracking was spot-on, with no need for special mounts or alignment — the device was indoors looking through an open window. Here’s a screenshot from the phone before it was taken (note the very useful inset wide-field picture):

At about 1:30am this morning the sky started to clear with some gaps in the clouds. I took a test sequence of a random part of the sky, centred on the star HIP80364. The Dwarf Mini took 21 15-second shots , of which 16 were usable — the device detected occasional cloud cover and discarded them. Again the tracking was perfect, with no discernable trails or elongation of the stars (click for full size):

 That’s a rather boring image, but given clearer weather we can hopefully do better. Oh, and it’s also good for wildlife:
A2 is reading Signals of Distress by Jim Crace.

Pigeon Pie

Back in 2020 we had an unexpected visitor: a sparrowhawk feasting on its prey in our back garden. The picture in the linked post was a still from a rather poor video, which we’ve now improved somewhat:

We thought the prey was a magpie originally, due to the racket being made by a flock mischief of them which attracted our attention. But now it’s looking more like it was a pigeon.
Thanks to the very powerful software ffmpeg, the video has been stabilised, sharpened and colour balanced.
A1 is reading Halcyon Years by Alastair Reynolds — thanks A2! AR likes incorporating both noir and detective elements in his SF (cf the terrific Century Rain and the Prefect Dreyfus novels), and here we’ve got Yuri Gagarin — well, sort of — as a mean-streets PI on a generation starship. There are touches of humour, and some Dickian nods in this tale: the sorrowfully forgetful robot, and the excessively polite one as it chucks our hero overboard. It all hangs together though, and a return to form.
A2 is rereading Alias Grace by Margaret Atwood.

6202 emocleW

Fireworks in the far distance, played backwards as 2025 disappears into history.
Our weather station malfunctioned at various points in the year, with the base unit failing in June and the business end packing in in December; consequently none of the statistics are reliable. However the solar panels soldiered bravely on and served up 1,530.932kWh, making 2025 our second best year ever.
A1 is rereading Bad Actors by Mick Herron.

Roasted

Roast beef, Yorkshire puddings, roast potatoes, sprouts, broccoli, stuffing balls, gravy … but A1 forgot to serve the carrots. But never mind, Gez scoffed the lot anyway. Plus A2’s delicious afters of Squidgy Chocolate Pear Pudding and cream, after which we scored 13 on the GSQ with Bob as quizmaster.
A1 is rereading The Stand by Stephen King. A2 is reading Desolation Road by Ian McDonald.

Watts Going On

On the 300th day of the year, we’ve managed to reach 1,500.000kWh precisely in our solar panel output for this year. So giving an average of exactly 5.000kWh per day.
This year was looking like it would be our best ever for the panels, but that was probably scuppered by the very gloomy October. It’ll probably be only second best.

A2 is reading The Rose Field by Philip Pullman, which finished off the trilogy beautifully. Like with the knee replacement, she has been waiting for this for 6 years, with covid to blame in both cases.

Coq au Vin

The family meal on this very rainy day (19.8mm) was A2’s amazingly delicious Coq au Vin, served with mash, green beans and garlic puff pastry pinwheels. Yum!

And for pudding, here’s Dave cutting A1’s Orange Sponge, served with custard, cream and chocolate sauce.

After all that, we scored a reasonable 9 on the quiz.

A1 is reading Ice Queen by Nele Neuhaus, a fearsomely complicated story of a squabbling German family with secret Nazi pasts. An exhausting read.

New Toy!

This is the new Raspberry Pi 500+. With keyboard lighting!

Thankfully, it’s completely configurable: you can have any colour and brightness, light up just the key pressed, have a “heat map” effect … you can even turn it off 🙂 And for fun, you can play a (very difficult) “Flappy Birds”-type game just using the keyboard and its lights.
The keyboard itself is really good, with mechanical keys. Just like the old BBC Micro.
When he can tear himself away from his new toy, A1 is reading Stone & Sky by Ben Aaronovitch. A2 is reading The Book of Doors by Gareth Brown, a readable fantasy about magic books that, for the purpose of the plot, can be used for good or evil.

Earth Shadow

The Earth’s shadow rising at sunset, just after the equinox, below the Belt of Venus.
A2 is rereading The Three Stigmata of Palmer Eldritch by Philip K Dick, which mentions in passing a machine that will render eg The Meditations of Marcus Aurelius as a funny cartoon in the style of De Chirico. Truly PKD was a prophet for his time.

ancient rome funny cartoon in the style of De Chirico.

A Record, of Sorts

Earliest dates for reaching 1000kWh
Rank Date Total Year total/rank
1 11 Jul 2025 1001.506 ?
2 16 Jul 2020 1009.582 1513.188/3
3 16 Jul 2015 1005.793 1528.472/2
4 17 Jul 2022 1000.305 1537.314/1
5 18 Jul 2021 1001.289 1484.297/4
6 19 Jul 2018 1007.096 1483.659/5
7 24 Jul 2023 1007.385 1465.268/7
8 25 Jul 2019 1004.350 1467.265/6
9 27 Jul 2014 1002.906 1440.038/8
10 29 Jul 2013 1000.932 1419.952/9
11 3 Aug 2017 1003.167 1403.480/10
12 8 Aug 2012 1004.008 1369.068/11
13 10 Aug 2016 1000.968 1366.583/12
14 10 Aug 2024 1000.675 1321.768/13

A fine and sunny day, and the warmest of the year (32.6°C).

The solar panels made 12.33kWh, which takes us past 1000kWh for the year. This is the earliest date we’ve reached this milestone, as seen in the table, and puts us on target for a very good year.

Cherries

Some of this year’s excellent crop of cherries. Although the tree is over 10 years old it’s never fruited very well until now, not helped by the depredations of squirrels and pigeons.

A1 is rereading Body Breaker by MW Craven, which brings to an end his MWC reread. Just waiting now for the next Washington Poe book, due soon. In other news MWC has been commissioned to write some juvenile James Bond tie-ins, which doesn’t bode well for his proper books 😐
A2 is rereading Black Widow by Chris Brookmyre.