# Northern Sky Narrowband Survey - True colors

- By: Tk833
- Date: 2025-10-06
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Northern_Sky_Narrowband_Survey_-_True_colors.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/d/d2/Northern_Sky_Narrowband_Survey_-_True_colors.jpg/1920px-Northern_Sky_Narrowband_Survey_-_True_colors.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

212° stereographic projection of the entire region surveyed by the Northern Sky Narrowband Survey in nearly true colors. Emission lines as well as the stars, were not subtracted. The view was composed of 168,260 single exposures with a total exposure time of approximately 2,084 hours.

The Milky Way extends from the left to the right side. The circular double band is the ecliptic.

Other color composites of the same view

Emission lines \[OIII\], Hα, and \[SII\]

Emission line Hα and continuum

Hα in pseudo-colors

Continuum without Hα and with partially subtracted stars