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Object: NGC 7009
Date: Sept.8-9, 2023 - Location: DSOC, Fort Davis, TX Image Credit: Preston Starr and Donald Waid
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The Saturn Nebula, NGC 7009, is a very unusual planetary nebula containing many morphological and kinematic sub-systems[1] such as jet-like streams and multiple shells[1]. NGC 7009 derives its common name from its shape that resembles the planet Saturn with its rings seen edge on[2]. The nebula is small with a diameter of 36 seconds of arc[2]. It, however, has an extended halo that reaches to approximately 100 seconds of arc[2]. The distance to the nebula is not known with any degree of accuracy[1}. The range of estimated distances is from 2,400 to 3,900 light years[2]. The Sky Catalogue 2000.0 places its distance at 2,900 light years and SEDS places it at 2,400 light years[2]. The image above was assembled as a bi-color image using narrowband filters. Ha filtered data was mapped to Red and OIII data mapped to Green and Blue. Stars were overlaid with data from a separate RGB filtered image. This method produces a near true color image.
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