Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Fireworks Galaxy  ·  NGC 6946
NGC 6946 - Fireworks Galaxy- CDK14, Rouz Astro
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NGC 6946 - Fireworks Galaxy- CDK14

NGC 6946 - Fireworks Galaxy- CDK14, Rouz Astro
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NGC 6946 - Fireworks Galaxy- CDK14

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Description

NGC 6946 also knows as the Fireworks Galaxy is some 25 million light years from Earth. Its smaller than our galaxy, perhaps only a third of the size hosting about half as many stars.

This image captured some of the fainter outer regions of the arms as well as the presence of some Integrated flux nebulae (IFN) in the background.

The exposure was relatively long at 22hours with a relatively fast CDK14 operating at f/4.7. The QHY600m camera was used at gain 0 to maximize the full well capacity but in High Gain mode rather than 2CMS to simplify calibration.

Hydrogen Alpha data was captured at gain 56.Hydrogen alpha data captured by 3nm filters highlights the pink nebulosity in the spiral arms analogous to sparkling rubies.

Below is a starless version highlighting the IFN and surrounding gases:

Galaxy and IFN.jpg

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NGC 6946 - Fireworks Galaxy- CDK14, Rouz Astro