The Star Funnel Nebula, is the brightest nebulous structure that is associated with the Lacerta OB1 association. Responsible for powering the nebula is 10 Lacertae (abbreviated to 10 Lac), a nearby O9V type star, with a mass of 27 solar masses and a temperature of 36,000 Kelvin. Together with other nearby stars, they are responsible for the yellowish appearance of the nebula. The Star Funnel is embedded in a much larger nebula that consists of warm hydrogen which appears red at optical images.
Image: Composite optical image of Sh2-126 taken with the Nicholas U. Mayall 4-meter telescope at Kitt Peak National Observatory, in Arizona. The image was created using broadband filters that are centred at 436 nm (B-band, blue), 537 nm (V-band, green), and 805 nm (I-band,orange) and a narrow band filter that is centred on the emission of ionised hydrogen (Hα, red).
Image Credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOIRLab/NSF/AURA)
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