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NGC 1491 (SH2 - 206)   Image down sampled 0.33x - click on image for full size
Penryn, California
October 2005/2008
FS-128 (ag, ST-4)
ST-10XME RGB 10 minute subs (2005)
M 250 @ f9.3 (ag, ST-4)
ST-10XME Lum 10 minute subs (2008)

NGC 1491 is one of the nebula most distant from the galactic center and does not appear to be associated with any molecular clouds.  The illuminating star is of spectral class O5.  NGC 1491 is at approximately 2.5 kpc.  Color data indicates a strong Ha component.