description NGC 1491 Overview
NGC 1491 is an emission nebula and H II region in the constellation Perseus, also catalogued as Sharpless 2-206. Its visible glow comes from hydrogen gas ionized by energetic ultraviolet radiation from a hot star associated with the region. Dense dust and gas along one side form a prominent bright rim, making the nebula useful for observing how massive stars illuminate and reshape nearby interstellar material.
help NGC 1491 FAQ
What type of object is NGC 1491?
NGC 1491 is an emission nebula and H II region in the constellation Perseus. It is also catalogued as Sharpless 2-206.
Why does NGC 1491 glow?
Its glow comes from hydrogen gas ionized by ultraviolet radiation from a hot star associated with the region. The energized gas produces the visible emission that makes the nebula stand out in astrophotographs.
What gives NGC 1491 its uneven shape?
Dense dust and gas along one side create a bright, irregular boundary and block some of the light behind it. This interaction between the hot star and surrounding material gives the nebula its sculpted appearance.
Where can I find NGC 1491 in the sky?
NGC 1491 is located in Perseus, a northern constellation associated with the Perseus molecular-cloud region. It is a deep-sky target that is generally easier to study with astrophotography than with the naked eye.
explore Explore More
Reviews & Comments
Write a Review
Be the first to review
Share your thoughts with the community and help others make better decisions.
