Stargazing at Scapa Festival 2019

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The milky way from the grounds of the Arkinglas Estate, Loch Fyne

I had another great time hosting outdoor astronomy and stargazing workshops at this years Scapa festival, held on 3-5th May near the shores of Loch Fyne at the Arkinglas Estate.

It was very busy, especially Friday evening when clear skies brought many folk streaming down into the gardens in anticipation of stargazing close to the shoreline.

As it happened we hit some cloud just as I was about to kick off, prompting a quick jump over to my backup projector and screen.  I was then able to deliver a 30 minute talk with Q&A, discussing things like the colour, temperature, distance of stars, the Milky Way, other galaxies, shooting stars and large impactors.  As ever the questions were fascinating.

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A passing satellite

Just as the talk wrapped up skies cleared and we were stargazing from the estate grounds.  Plenty of constellations and bright stars began appearing, and conditions improved further when a second group arrived to join in.

Similar conditions prevailed on the Saturday, when skies once again cleared up after my talk, allowing us to observe with the large case of binoculars I always bring to star parties.

Later on I was able to photograph some lovely shots of the Milky Way from the estate grounds, with the band of our galaxy sitting low and clear on the northern horizon.

Feedback has been great on the guiding so far, and I’m looking forward to getting involved again next year.

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Galaxy Photobomb

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When an entire galaxy (faintly) photobombs your night sky picture!

I was sorting out some of my recent images from the west coast and spotted the Andromeda galaxy. That’s my camper van at the bottom looking west over the sea near Arasaig. Sky glow is from the recently set Sun.

That fuzzy elongated smudge I’ve highlighted is the combined light from over 400 billion stars. A completely separate island universe over 2.5 million light years away.

Here’s a few other pictures from this excursion posted below.

 

Stargazing at Roseisle

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Starry skies over the Moray coast

Amidst a very busy schedule last month I managed to head out to Roseisle (along the Moray coast) for some observing and a wild camp.  My original mission was to try and catch a geomagnetic storm predicted by the MET office space weather forecasts.  As it happened the promised aurora didn’t arrive but I did manage to get some photos of the starry skies that opened up on Saturday night, starting with the International Space Station.

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Not the most fantastic ISS shot but I only had about 20 seconds to set up after running down the dunes to capture the pass!.  The station is actually travelling from west to east here, towards Sirius (bright star on left)

From there I took a number of pictures hoping to capture some aurora, but instead imaging the crisp starry skies.  I’ll let the photos do the talking from here – please read the caption notes.

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This image of the Plough (minus Alkaid) was snapped while I was still under the trees, on my approach to the beach.  You can clearly see the naked eye double star Mizar-Alcor at the bottom of the image.  The main stars in the Plough are roughly 100 lights years away.  Our Sun would not be visible naked eye if placed this far away which tells us something about the scale and luminosity of these titan stars.

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Looking north towards Burghead where I hoped to capture some aurora.  Instead I picked up the rich star fields within the Milky Way near Cassiopeia.

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One of many passing satellites.

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An interesting shot looking north west.  The bright white light is the Portmahomack lighthouse and the orange light pollution on the right is likely from Helmsdale.  Perhaps the most interesting feature in this photo is the faint smudge of light in the top left.  That’s the Andromeda galaxy – a separate spiral galaxy (larger than our Milky Way) over 2.5 million light years away.

Urban Astronomy Inverness

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The formation of a young protostar following the collapse of a previously inert dust cloud

We had a great turnout for March’s Urban Astronomy session last week at the Sea Cadet’s Hall in Inverness.  The indoor presentation massively benefited from our new giant screen, expertly erected by Robbie (pictured below).  Here’s a selection of slides from my presentation on naked eye observing and the life of giant stars.

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Robbie putting the final touches to our new giant screen for indoor astronomy presentations and virtual sky guiding

Topics covered:

– Naked eye and binocular observing
– Satellites: Iridium Flares and ISS
– Colour, temperature and mass of stars
– The Hertzsprung-Russell diagram
– Protostar formation from dark nebulae
– Main sequence burning and final fate of stars
– White dwarfs, supernovae, neutron stars and black holes.

As ever there were some superb questions during and after the talk.  Stay tuned for upcoming events as myself and Caroline roll out the program.

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In the simplest terms stars behave like black body radiators with colour linked to their surface temperatures.

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The brightest stars in the night sky can be close – like Sirius – or giant stars very far away (eg. Betelgeuse, Rigel, Deneb).

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The HR diagram.  An elegant and reliable tool for describing the evolution of stars from main sequence burning into their final stages of life

Dark Sky Observing at Abriachan

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A lovely crescent Moon hung in the West for most of the evening

We enjoyed another superb evening of stargazing and storytelling up at Abriachan Forest last Saturday – the last dark sky session until stargazing returns in October 2019.

There were beautiful crisp skies all evening long, allowing me to guide both groups outside for views of the Milky Way and numerous open star clusters like the Hyades, Pleiades, Beehive and the stunning double cluster in Perseus.

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Orion…of course

We also studied the Orion star forming nebula, the great spiral galaxy in Andromeda and some fainter galaxies in Ursa Major (M81 and M82), and even had a go at sighting the triplet of galaxies in Leo, which some of the keen eyed youngsters successfully glimpsed in the 8×40 binoculars.

Clelland was also back in action with the story of Arden and the birth of Merlin in the roundhouse.

Thanks to everyone who came along.  Please check my Facebook site for details of future summer events.

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Perseus and the double cluster