The natural Navigation: The Right Course, Naturally

It has been quite a restless few days.

Last Saturday I spent the morning in London as a guest on BBC Radio 4′s Excess Baggage. In the evening  I led a group on a night walk. The conditions were perfect. We watched as blue turned to orange. Then as the orange faded to dark blue and black we were treated as Arcturus, Deneb, Altair, Vega, Capella and others began to appear. Lurking luminously between the silhouetted branches of a two hawthorns there was a bright white light in the east. It refused to move or twinkle. It wasn’t an aircraft or a star, it was Jupiter rising to rule the sky. We looked at five different methods for finding the North Star.

Thank you to all 400 who came to a Night of Adventure in Bristol on Monday. Great cause, great audience, fun night. If this night comes to…

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Sometimes I feel like a big game hunter. Not a very good one though, as the idea of shooting the last white rhino, or whatever poor soul is struggling to cling onto their mortal coil, fills me with as much horror as you might hope.

What I mean is that I often find myself creeping about rather stealthily, for fear of disturbing the animals (sometimes these animals are the kids who I dare not wake up too early for fear, in the words of Russell Crowe in Gladiator, of ‘unleashing hell’).

I move out and forward, toes on grass, silently caressing my Canon SLR in my hands like a rifle and then I wait. I wait for the Big Game.

This game is rarely actually an animal, more often it will be some unexpected quirk in nature’s portfolio.

This morning I made my way over a fence, and into the…

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Venus and the brighter stars, like Arcturus, appeared shrouded in a veil this morning.

This was not mist close to the ground – horizontal visibility was excellent – but thin layers of high cirrus clouds. This effect has been used by navigators and travellers the world over as a sign that the a front may be approaching and a weather change is likely.

Cirrus on its own is not a guarantee of anything, but when followed, as it so often is, by cirrostratus and altostratus it is a strong indicator of an approaching warm front.

In my book I give the example of the frequent Greenland traveller, Gretel Ehrlich, who noted during a dog sled trip with a local hunter that a ring circling the sun in the morning signalled bad weather. Similar examples are to be found in deserts, on Pacific islands and among students of weather…

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UPDATE:

My sources tell me that the first is a Magpie Inkcap (Coprinopsis picaceus) and the second is Green Elf Cup/Wood cup/Stain (Chlorociboria aeruginascens).

My thanks, in no particular order, to: Nick Weston, Brian and Ross Gardner.

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A thousand apologies for that title.

Seriously now, are there any fungi experts out there?

Yesterday I came across these two rather fun specimens during a family walk in our local woods. Thought one was a Panther cap, but looks a bit too ‘pointy’ for that. The blue one is beautiful, but not one I can even guess at. I’m assuming it is a fungus, but could be a lichen at a stretch I suppose?

If anyone knows someone in the know please could you waft these images under their expert noses. Much obliged. Credit will be given. My email address is here.

On a different subject, my thanks…

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I crept outside this morning, trying not to wake the kids, and treated my self to a pre-heliacal viewing of Saturn. He was happily nestled under the star Porrima, that is to say between Virgo’s armpit and her shoulder.

If you are awake shortly before sunrise over the next couple of weeks, look just south of east. If it is clear then you should see what appears to be white star on top of a yellow one, both of them sitting not far above the horizon. The higher of the two is Gamma Virginis, or Porrima, in the constellation, Virgo. Below that will be the orangey-yellow Saturn. Neither of them are especially bright and so they will not stand out with the confidence that Jupiter is doing at night at the moment, but they should still be easy to find until the first light of dawn swamps them.

NB. Try…

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I was at the Goodwood Vintage Festival last night. We saw Ronnie Wood and his band, The Faces, as well as The Wailers. When the moody clouds passed, I couldn’t help glancing up at the Plough, Arcturus, Cassiopeia, Perseus and Jupiter rising in the east. Even managed to catch a couple of great Perseid meteors, one of which burnt a smoky trail across the sky, visible above the bright lights of the Big Wheel. Vintage.

First thing this morning our bathroom was bright with diffused light from the blinds that had been filled with moonlight from the west. I put on a thick jacket and pair of Ugg boots and wandered outside. Looking up I was spoilt. The moon was indeed throwing her weight around and this can sometimes make for imperfect stargazing, but the cold air was clear enough that between the first glow of dawn in the east and the moon’s light in the west there were riches to choose from. Gemini, Leo and Virgo were high in the sky. The dark spaces between them were punctured with Saturn and the reddish Mars. In the east another tinge of red was clear in the form of Arcturus. (It was less than two months ago that I was wondering at Arcturus and Bootes in the western evening sky.) Low in the southern sky…

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Last night, looking west through some tree branches, I took this picture of the orange star, Arcturus. It is one of the five brightest stars in the night sky and is part of the constellation Bootes. It is in fact the brightest star in the northern half of the celestial sphere.

It is navigationally interesting because of its declination or ‘celestial latitude’. At 19 degrees north it passes overhead a lot of major cities, including Honolulu, Mumbai and Mexico City.

The easiest way to find Arcturus is to follow the the handle of the Plough on its curved path away from the ‘saucepan’. The star that can just be seen in the top right of the photo is the end of the saucepan handle.