Archive for September 1, 2013

Off to Greenwich Peninsular to look for migrant birds. During the week a number had been seen on the rough land at the southern end (Plots of land awaiting development). Unfortunately no such luck today and only resident species found. However I did find a migrant Butterfly when I had a brief but clear view of a Clouded Yellow before it disappeared over a fence into a development plot at a place where I could not get a good view of the land on the other side.

Maravilha // Clouded Yellow (Colias croceus), female
Clouded Yellow
photo by Valter Jacinto (http://www.flickr.com/photos/valter/)

I moved onto the Ecology Park which was also quiet bird-wise but which had good numbers of dragonflies (7 species) and butterflies (6 species). The best of these was a sighting of Banded Demoiselle which flitted across the water in front of me but refused to settle to enable me to photograph it.

Banded Demoiselle
Banded Demoiselle
photo by Sergey Yeliseev (http://www.flickr.com/photos/yeliseev/)

This is one of my favourite damselflies and this was a first sighting for me for both this year and for the site.
Also a number of Migrant Hawker (confusingly this breeds in Southern England and is not a migrant) were present and one male perched obligingly for me to photograph.

Migrant Hawker

Migrant Hawker

Butterflies included Small Tortoisehell and Common Blue.

Small Tortoiseshelll

Small Tortoiseshelll

Large White (Female)

Large White (Female)

Back at home a Jackdaw visited the garden which is the first sighting for about 3 months.

Although a quiet day for birds, an excellent one for dragonflies and butterflies

Mallard [sp] (Anas platyrhynchos)
Little Grebe [sp] (Tachybaptus ruficollis)
Grey Heron [sp] (Ardea cinerea)
Common Moorhen [sp] (Gallinula chloropus)
Eurasian Coot [sp] (Fulica atra)
Black-headed Gull (Chroicocephalus ridibundus)
European Herring Gull [sp] (Larus argentatus)
Lesser Black-backed Gull [sp] (Larus fuscus)
Common Pigeon [sp] (Columba livia)
Common Wood Pigeon [sp] (Columba palumbus)
Rose-ringed Parakeet [sp] (Psittacula krameri)
Eurasian Magpie [sp] (Pica pica)
Western Jackdaw [sp] (Coloeus monedula)
Carrion Crow [sp] (Corvus corone)
Eurasian Wren [sp] (Troglodytes troglodytes)
Common Starling [sp] (Sturnus vulgaris)
Common Blackbird [sp] (Turdus merula)

Large White (Pieris brassicae)
Small White (Artogeia rapae)
Green-veined White [sp] (Artogea napi)
Clouded Yellow (Colias crocea)
Common Blue (Polyommatus icarus)
Small Tortoiseshell [sp] (Aglais urticae)
Speckled Wood [sp] (Pararge aegeria)

Banded Demoiselle (Calopteryx splendens)
Blue-tailed Damselfly (Ischnura elegans)
Common Blue Damselfly (Enallagma cyathigerum)
Red-eyed Damselfly (Erythromma najas)
Migrant Hawker (Aeshna mixta)
Ruddy Darter (Sympetrum sanguineum)
Common Darter (Sympetrum striolatum)

M15

Posted: September 1, 2013 in Astronomy
Tags: , , ,

M15 (aka NGC7078) is a globular cluster seen in the constellation Pegasus. At an estimated 12 billion years old it is the oldest known globular cluster in the Milky Way. It is also one of the most densely packed and has more than 100,000 stars contained within it. It is 33,600 light years from earth and has a diameter of 175 light years.

M15b

M15c

M15

M15b2

These images were taken using the NASA Harvard telescope and the Bradford Robotic telescope