Log Book Entry No.13

Days, Calendar Created: 11 Sep 2013 20:03:32 Days, Calendar Last Revised: 11 Sep 2013 20:03:32 Person PedroPaiva Text Target List

Ring Galaxy (NGC1291) Protostar (IRAS 20324+4057)
"The bizarre looking ring galaxy NGC 1291 in Eridanus.
These fairly rare types of galaxy are usually much fainter objects, but this one at "only" 33 million light years away is easily visible in modest size telescopes though the faint outer ring of material is much fainter than this.
Its strange appearance is the likely the result of a collision with another galaxy in the distant past.

20"CDK with FLI-PL6303e camera. LRGB. L: 70mins. RGB: 5/5/10mins" - Damian Peach

IRAS 20324+4057 is a Protostar in the Cygnus OB2 Association, 4,500 light-years (1,380 parsecs) away.
This image is a composite of separate exposures acquired by the ACS instrument and the Isaac Newton Telescope. Several filters were used to sample various wavelengths. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:

INT: H-alpha cyan
ACS: F606W (V) blue
ACS: F814W (I) red

More info on the hubblesite.org

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Topic revision: r1 - 11 Sep 2013 - PedroPaiva

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