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John Blackwell
July 20, 2006
1361
post image

Acquisition Details

Date Posted: July 20, 2006

Equipment card

Description

This is a spectrum of Quasar 3C273 as compared to a spectrum of a local star, Theta Leonis. This dramatically shows the redshift of the Hydrogen Beta line in the spectrum. The image was taken through a Celestron 8 scope at f/6.3 using an SBIG ST-7 imager with a CFW-8 filter wheel holding a Rainbow Optics grating in the wheel. Image time: 30 minutes.



M-101 LRGB Color
1782

July 20, 2006


M-81 LRGB Color
1686

July 20, 2006


NGC6888 Crescent
1685

July 20, 2006


M-84 and Virgo Cluster
1553

July 20, 2006


M-51 Whirlpool LRGB
1397

July 20, 2006