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Taken 24-Dec-18
Visitors 21

14 of 25 photos
Photo Info

Dimensions8340 x 4262
Original file size53 MB
Image typeJPEG
Color spacesRGB
Date modified24-Dec-18 21:51


NGC 1300 -- lying about 69 million light-years away -- is an example of a barred spiral galaxy. In the core of the spiral structure of this galaxy, the nucleus shows its own extraordinary and distinct "grand-design" spiral structure that is about 3,300 light-years long. Only galaxies with large-scale bars appear to have these grand-design inner disks — a spiral within a spiral. Models suggest that the gas in a bar can be funneled inwards, and then spiral into the center through the grand-design disk, where it can potentially fuel a central black hole. However, NGC 1300 is not known to have an active nucleus, indicating either that there is no black hole (which would be odd as most/all galaxies are now expected to harbor a super-massive black hole), or that it is not accreting matter. More research needed, methinks.
Using both ESA/ESO/NASA provided software and Photoshop, I combined four x 2 (due to the galaxy's large size, two adjacent pointings of the telescope were necessary to cover the extent of the spiral arms which meant that it doubled the amount of work I needed to do) b&w Hubble Space Telescope images (courtesy NASA and MAST) taken with blue, yellow-green, and red-infrared wideband filters as well as one Hydrogen-Alpha narrowband filter to create this image. Starlight and dust are seen in visible and infrared light. Bright star clusters are highlighted in red by their associated emission from glowing hydrogen gas (Hydrogen-Alpha).