NGC 1491

{{Short description|Emission nebula in the constellation Perseus}}

{{one source|date=February 2017}}

{{Infobox nebula

|name = NGC 1491

|image = 300px

|caption = The nebula NGC 1491

|credit = Chuck Ayoub/Captured in Ha and OIII

|type = emission

|epoch = J2000

|subtype = H II region

|ra = {{RA|04|03|15.9}}{{cite simbad|title=NGC 1491|access-date=21 February 2017}}

|dec = {{DEC|+51|18|54}}

|dist_ly = {{cvt|3.02 ± 0.6|kpc|ly|lk=on}}

|appmag_v =

|appdia =

|size_v =

|constellation = Perseus

|radius_ly =

|radius_pc =

|dimensions =

|absmag_v =

|notes =

|names = Ced 25, LBN 704, LBN 706, Sharpless 2-206

}}

NGC 1491, also known as LBN 704, SH2-206 or the Fossil Footprint Nebula, is an emission type bright nebula located about 9,800 light years away from Earth in the constellation of Perseus. The nebula gets its deep red coloration due to many massive stars (such as BD+50 866) embedded within NGC 1491 producing large amounts of ultraviolet radiation and ionizing the hydrogen gas that makes up the nebula.{{Cite web |title=Emission Nebula NGC 1491 |url=https://www.noirlab.edu/public/images/noao-ngc1491/ |access-date=2023-11-26 |website=noirlab.edu |language=en}}{{Cite web |date=2021-03-08 |title=NGC 1491 |url=https://stargazerslounge.com/topic/373466-ngc-1491/ |access-date=2023-11-26 |website=Stargazers Lounge |language=en-GB}}