Galaxy Clusters

Herc_Gal_Clust_130715_Web.jpg (384936 bytes) Abell Galaxy Cluster 2151 in Hercules, centred on Arp 71 (the "Hook").  This LRGB of 60:40:40:40 minutes was taken in Spain on 13th July, 2015 using the Planewave scope and QSI 683 camera. Abell 2151 is 500 million light years distant from us.  Full Resolution Image (11.2Mb). Smaller High Res Image (2.2Mb)
AGC2199_230711_Web.jpg (125686 bytes) Abell Galaxy Cluster 2199 in Hercules, with the fascinating triple cored NGC 6166 galaxy at its centre, a galaxy with an active galactic nucleus (AGN). This cluster is only one of several galaxy clusters in this part of the sky, and it is estimated to be 400 million light years distant from us.  Full Resolution Image (1.8Mb)Negative Image.
AGC2199_260711_Web.jpg (179911 bytes) Abell Galaxy Cluster 2199 in colour.  We liked the luminance image so much we returned 3 nights later to add colours.  This LRGB takes the 60 minute luminance from above and combines it with 30 minutes of each colour.  Full Resolution Image (2.8Mb)
Fornax Galaxy Cluster - 21 Dec 2001.jpg (31542 bytes) Part of the Fornax Galaxy Cluster.  These little fellows are tough to see and image, lying as they do low down in the southern sky.  Numbering from the top of the image we have NGC 1387 (magnitude 11.7), NGC 1381 (magnitude 11.5 and the sideways on galaxy), NGC 1379 (magnitude 11.8) and NGC's 1374 (magnitude 11.1) and 1375 (magnitude 12.4) side by side at the bottom
Fornax Galaxy Cluster Negative - 21 Dec 2001.jpg (43029 bytes) As we have done in previous galaxy group images, here is a negative of the above image, which shows the galaxies much more clearly.  This is a most interesting area of the sky, and it is a shame that it only rises a few degrees above the horizon, even in Houston.  Our consolation is that in the UK (our home country) they are never visible at all.
Perseus Galaxy Cluster - 14 Oct 2001.jpg (85256 bytes) The Perseus Galaxy Cluster.  Taken at f/5, this wide field image of the galaxy cluster in the constellation of Perseus shows more than forty galaxies of all shapes and sizes 
Perseus GC Neg 8 bit - 14 Oct 2001.gif (134991 bytes) Astronomers will very often search for faint objects by using a negative print of a particular area of the sky.  Here is a negative print of the above image.  See if you can detect the faint galaxies easier in the negative as opposed to the positive print.  We have also printed the names of the galaxies on the image so you can see where they are.  Can you see more than the 44 we have named?
Stefans_Quintet_140912_Web.jpg (234521 bytes) STEPHAN'S QUINTET - Located very close to the large spiral galaxy NGC 7331 in Pegasus, this group of galaxies is extremely faint and tough to find and see.  This image is an LRGB of 80:40:40:40 minutes using our C-14 telescope and ST-10XME camera.  All five galaxies span an area less than 3.5 minutes of arc, and several of them are interacting.  Full Resolution Image (2.2Mb)
Leo_Trio_Web_7May2005.jpg (83676 bytes) THE TRIO IN LEO.  Galaxies M65 (lower right in the image), M66 (upper right) and NGC 3628 (left) are all part of the same group of galaxies at a distance of 65 million light years from Earth.  This LRGB image is a compilation of eight 5 minute exposures masked for the luminance, and six 5 minute exposures for each of the colours.  Full sized image (0.5Mb)
Virgo Galaxy Cluster - 15 March 2002.jpg (130480 bytes) GALAXIES in the VIRGO CLUSTER.  In March 2002 we imaged this collection of galaxies in the northern part of the Virgo cluster.  Taken with the FSQ at f/5, this 50 minute exposure shows (from the left) NGC 4477 - m11.4, size 3.8' x 3.4', NGC 4479 - m13.4, size 1.5' x 1.2', NGC 4473 - m11.2, size 4.5' x 2.5', NGC 4458 - m12.0, size 1.5' x 1.5' and NGC 4461, m11.1, size 3.6' x 1.4'
Virgo_Cluster_130607_Web.jpg (63028 bytes) And from Spain in June 2007 we imaged the area around Messier 86.  This image is a 60 minute luminance using the Takahashi FSQ telescope and the ST8-XE CCD camera.  For those who would like to know which galaxy is which we have posted a fully labelled image as well.
Arp71_Web_21June2003.jpg (147733 bytes) The area around ARP 71in Hercules - actually part of one of the Abell Galaxy Clusters.  We haven't counted all the galaxies in this field, but we have attempted to label them hereOne thing which became clear to us very quickly is that there are a large number of galaxies in the image which simply do not appear on either The SKY or Megastar.  There is an excellent full sized image (540 Kb) here

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