Comet 17P/Holmes

By on October 30, 2007 · Filed under: astronomy · 0 Comments

Last week this inconspicuous periodic comet which had been a distantly faint magnitude 17 suddenly flared up, nova-like, to a bright magnitude 2.2, suddenly becoming one of the brightest stars in the constellation Perseus. Situated SE of Mirphak I finally got a decent break in the clouds last night and managed to catch this bright object which to the naked eye looks like a new yellowy star in Perseus.

Comet 17P Holmes

Seen at the target point in this widefield shot of the Perseus region, high above at 23:30 GMT, I was able to observe it in the binoculars which revealed a bright, expansive coma with slight eccentricity indicating its direction of travel.

Comet 17P Holmes

Discovered in November 1892 by British amateur astronomer Edwin Holmes during a moment of similar outburst it is thought this brightness may be sustained for several weeks.

This is an easy one to find for yourself as Perseus is visible all night from mid-northern latitudes. SImply grab yourself a suitable finder chart and go check out this intriguing visitor.

Scolty Hill and the Falls of Feugh

By on October 28, 2007 · Filed under: flickr, mountains · 0 Comments

This morning I caught the 10:15 Stagecoach bus and finally escaped Aberdeen for the day. Although slightly delayed due to two dozen or so German students trying to buy a group discount ticket, we headed westward up Royal Deeside under beautiful, clear sunny skies and arrived in Banchory just under an hour later.

After a few minutes getting my bearings I headed south, crossing the River Dee and then following it west until I reached the entrance to Scolty, a Forestry Commision area with some very well marked woodland paths. At this time the clear skies had been covered by some grey, rolling cloud, but as I started to climb up on a wide track, through marching rows of pines the sun yet again started to peek out. The colours of autumn were evident further on once I hit some of the less managed woodland.

Forest Walk

The well made path soon turned and climbed steeply up Scolty hill, and the way became uneven and slippery with exposed rocks and roots ready to catch out a misplaced feet. Luckily the sun had come out and the views away north, west and east were spectacular, encompassing a great sweep of the Dee valley, and Banchory away behind me.

At the top of the hill, 396m high according to my map, I came to General Burnett’s momument, a tall round tower that commanded remarkable views over the rising foothills of the Caingorms. A narrow spiral staircase took me to the top and I spent a few minutes enjoying the sight and breathing in the bright, fresh air.

General Burnett's Monument, Scolty Hill

Back at the bottom I checked out some of the landmarks visible from this height, had a bite of lunch, before heading off over some of the heather-clad moorland which lead off south from the heights. Dropping off the hill I came into a shallow valley between Scolty and the next summit where a broad track took me back around the base of the hill and into the woods. I followed a different track now which took me through some beautiful beech forest, before climbing back up, following the course of a wee burn to the carpark.

Autumn Leaves

On the way back to Banchory I stopped off at the river Feugh, where a narrow stonebridge, and an ugly metal footbridge, crossed high over the falls where at the right time of the year salmon can be seen jumping up the stream. Here again the autumn leaves were showing off their rich, ruddy colours and the falls were loud and swift.

I got back to Banchory just in time to catch the bus back to Aberdeen and reached home just as the sunset, the night falling disconcertingly early after British Summer Time had ended the morning before.

See more photos on Flickr.

Aberdeen Harbour and Nigg Bay

By on October 27, 2007 · Filed under: flickr, mountains · 0 Comments

Today under ominous clouds and high winds I decided to take a walk around the south side of Aberdeen harbour and down the coast back towards where I live in Nigg. This was a quite gentle walk, made more dramatic by the high seas and ferocious winds that were buffeting the clifftops and whipping up the spray.

The Coastal Path

After doing some quick shopping I started my walk at the harbour, walking along the south esplanade past some of the bigger docks where supply ships were being loaded ready for more trips out to the rigs. As the road climbed up to the lighthouse, I stuck to the shoreline and passed opposite the Marine Control tower and the various piers which were providing a nice perch for various cormorants and gulls. A small beach sheltered behind the southern breakwater which marked the end of the harbour and which the more energetic waves were managing to crest with a burst of white water.

Gratuitous Lighthouse Shot

I then climbed up onto the clifftops and skirted round past the lighthouse where a sad reminder of the dangers of the seas was to be found. At the north end of Nigg Bay I passed the huge foghorn which warns ships of the entrance to the harbour and then came round, back on the road where it was almost impossible to walk in a straight line due to the strength of the wind. Down on the shoreline various cars were pulled up and the occupants watched as wave after wave crashed against the shorefront.

Exposure

Beyond the bay I tried to walk over Tullos Hill but, after crossing the railway line via an arch bridge I was confronted with a maze of high security fences which seemed to force me back to north and out of my way. Whilst retracing my steps to regain the coast I saw a fox dart off down the path and shortly after a young deer, springing through the coarse grass.

Back at the coast I picked up the Aberdeen coastal path as it continued south towards Cove. With the clouds growing ever darker and wind continuing to relent I left the path just past Doonie’s Rare Breeds Farm and made me way through the Tullos Industrial Estate to get back home just as the sun was setting.

Offshore Survival Course

By on October 19, 2007 · Filed under: engineering · 1 Comments

At the end of this post is an excellent example video of the type of thing I’ve been doing the last few days. Yes, being submerged in a helicopter and then rolled over to simulate a capsize at sea was all part of my Basic Offshore Survival and Induction and Emergency Training course which lasted three days. Having passed it I am now able to fly out to visit the oil and gas platforms off the coast of Scotland which I’m currently doing work for.

Besides escaping from helicopters we were also taught sea survival skills (both when in the water and when using liferafts), correct lifeboat drill, firefighting and navigation through smoke filled buildings, basic first aid including CPR and how to initially deal with cuts, broken bones and burns, and other general aspects of life on a production facility, including evacuation and escape procedures and use of survival suits and lifejackets.

It was a lot of fun, but the inherant dangers and risks that come with this type of work were never far away, and we were certainly given plenty of information that will make us respect our own safety, as well as that of those around us.

Hunting for Comet LONEOS

By on October 16, 2007 · Filed under: astronomy · 0 Comments

Yesterday evening, with the promise of clear skies, I headed out west from my flat and over to Kincorth Nature reserve. The last few people were hurrying home with their dogs and by the time I crested the hill to get my clear western view the reserve was quiet and I was able to set-up my camera and tripod in peace.

The red giant star Arcturus was clearly visible in the West North-West with other stars of Bootes above it, and the Northern Crown to its upper right. Over to the right things were still rather lost in the lingering sunset, but after ten minutes or so I could see Cor Caroli, with the stars of Ursa Major above it.

With binoculars I now started scanning the area I knew the comet to be, using a couple of triangles I’d found in the finderchart provided by Martin McKenna on his website. It didn’t take too long to pick up the comet, though it was obvious that at these low altitudes the seeing was less than ideal – light pollution exacerbated by haze was reducing the contrast turing this faint mag 6 object into a diffuse object that could only really be picked up with averted vision.

Still, it definitely was the comet: a green, compact round glow in my binoculars which didn’t reveal any hint of a tail.

I then turned my camera on the area and using exposure times between 15-25 seconds, an aperture of f/2.8 and ISO 200-400 have picked up the comet (just!). Here is a widefield view first with Arcturus over to the left, the Northern Crown to the top left and Cor Caroli up to the right. The comet is slightly below and left of center and is detectable on my monitor as a faint, small patch of fuzz.

Comet C/2007 F1 Loneos

Click to see this image on black for a better view. I’ve also cropped and contrast-enhanced this image to further pick out the comet which definitely appears green and round in shape. Arcturus is the bright red star off to the extreme left.

Detail showing Comet C/2007 F1 Loneos

Click to see this faint image of View On Black“>Comet C/2007 F1 LONEOS on black for a better view.

With less than ideal conditions it was a successful comet hunt, and now I’ll be sure to track it on successive clear nights.

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