Assertion: nebula | /r/CapableOf | span some 2.5 full moons
Facets:
value: in the mosaic image
type: LOCATION
value: toward the constellation
type: LOCATION
Source sentences:
text: In the mosaic image, composed with narrowband data from the 2.5 meter Isaac Newton Telescope, it spans some 2.5 full moons toward the constellation Cepheus.