2 datasets found

Keywords: emission nebulae

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  • Northern Sky Narrowband Survey

    The Northern Sky Narrowband Survey maps the entire northern hemisphere down to a declination of -16° in the light of the emission lines H-alpha (656.3 nm), [OIII] (500.7 nm) and...

  • Planetary Nebulae: results of abs spectroscopy

    This table contains compiled data on Galactic planetary nebulae based on absolute optical spectroscopy. It is primarily derived from spectroscopic observations, supplemented by...
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