Cosmic Horseshoe - A wonderful Einstein Lens

This work, in fact, was an image of Mr. Francis Longstaff that used a 16" RCOS in a California location. His site has some wonderful images and worth a visit.

Some months ago I've proposed him to get some Lens images, as this is a very rare amateur astronomer subject due to difficulties in imaging. Then he take a 4x10min exposure on Cosmic Horseshoe. Both of us worked on the image and we show below, compared (at top right in the plate) with the one obtained with Isaac Newton Telescope (2.5m diameter !) in La Palma.

This lens is a radio-galaxy at z=0.44 and the background galaxy is at z=2.38, some 10 billion ly distant. This is the article that describes the object with detail.

You can see that Longstaff's image got all subtle details.

16" RCOS 0.25 arcsec/pixel 4x10 min exposure.

Gallery of Recent CCD Images using a 10"SCT a 14"SCT and Losmandty G11

New SCT 14" and ST-8X

Image of RCOS 20"Observatory

http://www.astrosurf.com/re/malasia_2006_ccd-01.jpg

Source for Pedro Re's image in H-alpha and Hubble's image

http://www.astrosurf.com/re/m42_20s-hrgb_100_120_200_ddp.jpg

http://www.amateursterrekunde.nl/images/Orion_Nebula.jpg

Pillars of Creation - Messier 16

SCT 10" - F3.3 - Losmandy G11 - 20x20secL unguided

Pillars of Creation - Messier 16 - Color

SCT 10" - F3.3 - Losmandy G11 - LRGB 20x20secL (10x20secRGB) sec unguided

Dumbell - Messier 27

SCT 10" - F3.3 - Losmandy G11 - LRGB 20x20secL (10x20secRGB) sec unguided

Ring Nebula - Messier 57

SCT 10" - F3.3 - Losmandy G11 - LRGB 20x20secL (10x20secRGB) sec unguided

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This site was last updated 07/07/07