Spiral galaxy NGC 3717 in Hydra

Spiral Galaxy in Hydra (NGC 3717) NGC 3717 is visible as nearly edge-on galaxy showing a distinct dust band in the constellation Hydra. It is about 80 million light years away from the solar system, and it extends 3.5 arc-min in the sky.
Surprisingly the galaxy features some faint extension to the south (star stream), an indication of possible tidal interaction with another galaxy.

At 7h to the south there is another adjacent galaxy (IC 2913) showing spiral arms and H-alpha areas Its redshift indicates a similar distance of 77 million light-years to earth.

Image data:
LRGB (440-180-180-180 min) total 16.3 h, north is up, seeing 0.8-1.1 arc-sec,
80cm f/7 Astrooptik Keller cassegrain, FLI PL-16803, Astrodon LRGB GenII filters, Prompt 7 CTIO Chile

Processing: Johannes Schedler

Find the partly cropped image in 30/100% size below and at bottom an inverted stretched version in 30/100% size showing lots of faint background stuff.

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Last modified on Thursday, 10 August 2017 13:10

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