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DSLR attached to ETX90. LiveView image of 2015 partial eclipse on Canon 40D

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 I try to log my observing and related activities in a regular blog - sometimes there will be a delay but I usually catch up. An index of all my blogs is on the main menu at the top of the page with daily, weekly or monthly views. My Twitter feed is below. I am also interested in photograping wildlife when I can and there is a menu option above to look at some of my images. I try to keep the news feeds from relevant astronomical sources up to date and you will need to scroll down to find these.

The Celestron 14 is mounted on a Paramount ME that I have been using for about 10 years now - you can see that it is mounted on a tripod so is a portable set up. I still manage to transport it on my own and set it all up even though I have just turned 70! It will run for hours centering galaxies in the 12 minute field even when tripod mounted.

 

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Monday
Feb092015

NGC 2455 Open Cluster in Puppis

DateMonday, February 9, 2015 at 6:57AM

I used telescope T9 at Siding Spring to image this open cluster using V and B Filters. Telescope T9 is regularly used in Hubble Space Telescope  support missions. This cluster was discovered on 15th February 1836 by John Herschel, the son of William Herschel. The stars are generally around 12th Magnitude. The cluster is approximately 5' across. The field of view of telescope T9 is 13.6 x 20.4 arc-mins. The cluster lies at a distance of 2650 Parsecs. (Ref 1) The bright foreground star is HIP 38197 with a magnitude of V =7.95 and B = 7.80 so is slightly brighter in the blue. It lies at a distance of 1,716 Light Years which is 526 Parsecs so it lies at about one fifth of the distance of the cluster from us. 

 

 

The chart below shows the position of NGC 2455 in Puppis.(Courtesy of Ref 2)

 

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