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Gravitationally lensed galaxies at 8 billion light years seen in Abell 2218, Bruce Van Deventer

Gravitationally lensed galaxies at 8 billion light years seen in Abell 2218

Getting plate-solving status, please wait...
Gravitationally lensed galaxies at 8 billion light years seen in Abell 2218, Bruce Van Deventer

Gravitationally lensed galaxies at 8 billion light years seen in Abell 2218

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The galaxy cluster Abell 2218 is well known for the Hubble image showing strongly curved images of distant lensed galaxies. My previous upload shows the Hubble and PanSTARRS images overlaid with my image; this is to show the image by itself in better quality. The image is shown reversed to bring out the faint detail. The lensing galaxies are at Z=0.17 which is a comoving distance of 2.3 billion light years, while the lensed galaxies are reported at Z=0.7 (or more) which is 8.3 billion light years for a generalized set of cosmological constants. The lensed galaxies are the faint little arcs. The seeing on this night was 2.1" using Astrometrica's FWHM star profile calculation; the arcs are probably around 20th magnitude.

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Gravitationally lensed galaxies at 8 billion light years seen in Abell 2218, Bruce Van Deventer