Monday, December 31, 2018

Billions and Billions of stars ... and what about life?

NGC 3711 group of galaxies

I took this deep sky image from my observatory on 29th July, 2017 using a Moravian G2-1600 cooled CCD. I wanted to include a diversity of galaxies types separated by huge distances.

NGC 7331 (centre right) is an unbarred spiral galaxy about 40 million light-years away from us in the constellation Pegasus. It is the brightest member of the NGC 7331 Group of galaxies. From the image taken  it can be seen that the core of this galaxy appears to be slightly off-center, with one side of the disk appearing to extend further away from the core than the opposite side.

The other members of the group are the lenticular or unbarred spirals NGC 7335 and 7336, the barred spiral galaxy NGC 7337 (shown at the periphery of the image) and the elliptical galaxy NGC 7340. These galaxies lie at much longer distances of approximately 332, 365, 348 and 294 million light years, respectively.

Hubble classification of Galaxies

NGC 7331 was discovered by William Herschel in 1784.

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