This one?
Harley 647, f. 5v
Illustration of the swan of the constellation Cygnus, with text or scholia within the figure of the constellation.
from Aratea, with extracts from Hyginus’s Astronomica in the constellation figures, 9th century France
http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=26812