| Search results - "ic" |
30 Galaxies in one image?17 viewsAt this quiet time of year for astronomy I was looking back over previous images and came across one of my very dull and boring galaxy library photos. The galaxy I was imaging is part of the Abell 426 Galaxy Cluster. I wondered how many galaxies were caught in this image in total so I used "The Sky" software to generate a chart of the exact area and then "switched off" all the stars (an option in the software) to leave only the Galaxies behind. The image on the left is my original 60 second image (March 8th 2010) - the one in the centre is not an image but the corresponding chart and the one on the right is the chart showing galaxies only. Most of these galaxies can be seen in the original "boring" image and I estimate I captured over 30 galaxies in that single image - perhaps making it a little less boring! In addition one of these galaxies - NGC 1275 - is also known as C24 and is of particular interest. To find out why go to Page 62 of a book by the well known author- David Ratledge -"Observing the Caldwell Objects" (Caldwell C24)!
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22 viewsComet McNaught Animation – the comet moved as shown through Cepheus in the early hours of Thursday 13th May 2010. (Click to run) A series of 45 second images were taken and 23 of these were used to form the animation. (I used every 5th image from the sequence). The time of the first frame was 01:12 U.T. and the 23rd frame was 02:39 U.T. so the comet moved the distance shown (towards the North East) in 87 minutes. The scale of the square image is 11.4 minutes of arc on each side, giving an estimated 4 minutes of arc of movement of the comet giving a speed of 2.7 arc seconds per minute. I had to stop because the sky was brightening as it was actually beginning to get light! (3.39 am BST).
Len Adam
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Crescent Moon24 viewsApproximately 19 X 2 minute separate video's using a philips webam processed in IRIS and made into a mosaic by David Ratledge.
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BAS in 200851 viewsA group portrait at one of our meetings in the (then) TIC.
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Circumzenithal Arc2 viewsThe Circumzenithal arc has been called "a smile in the sky" It is rarely noticed because it occurs so far overhead. Can occur when sun dogs are observed. Due to sunlight refracted from Cirrus clouds.
Picture taken hand held camera.
PM 01/09/10 3.30pm
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19 viewsDuring a visit to William Herschel's house in Bath last week I took a photo of this replica of the telescope he used to discover Uranus.An altazimuth mount was used on the Newtonian telescope which allowed "fine" adjustment in altitude and azimuth using the handles in evidence at the middle of the telescope tube. The focal length of the telescope was 7 foot (2100mm) and the mirror diameter 6.2 inches (155 mm). This gives an f-ratio of f/13.5 approximately. (See my website for more details - www.leylandobservatory.com.)
Len Adam
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17P/Holmes13 viewsNormally a very faint comet, but it's flared up to a brilliant spectacle twice in the last 150 years!
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The Seahorse and the Jellyfish34 viewsIC 443 is the bright nebula to the west (right) and is known as the Jellyfish. To the east (left) is a dark nebula in the form of a seahorse.
DR
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jupiter46 viewsone of the first pictures I ever took.
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Comet C_2008 FK75_Lemmon-Siding_Sp18 viewsAn animation of the faint comet Lemmon_Siding_SP taken last night (2 June 2010). Two 45 second exposures. The first at 23:25 and the second at 23:56 i.e. 31 minutes apart. Image Scale 11.4 X 11.4 minutes. North is up. Comet is moving towards the North West. The Comet is at a distance of 4.6 A.U. from the Sun. Inclination to the Ecliptic 61 degrees. Magnitude is about 14.7
Len Adam
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C/2007 E2 Lovejoy8 viewsThe 12 sub-frames were taken in three bursts over the course of 17 minutes, during which time the comet had moved against the background stars (which threrefore appear as dotted lines)
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Spiral Galaxy M10615 viewsDiscovered by Pierre Méchain in 1781, M106 is a large bright galaxy located in Canes Venatici. It is one of the closest Seyfert galaxies to us at around 25 million light-years away. Seyfert galaxies have active galactic nuclei thought to powered by supermassive black holes at their centre - sort of a tame quasar! The companion galaxy is NGC 4217. DR
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