Searching Google for that Aratea manuscript folio, I came across this stunning image: Perseus (with a dripping Medusa head) in a 9th-century French manuscript of Cicero’s translation of the Aratea. 
The dots on Perseus’ body indicate the placement of the stars in the Perseus constellation.  His body itself is made up of the text of the Aratea, a design motif that is not uncommon in manuscripts of this era.  The text is written in scriptura continua, continuous letters without word breaks, and in what looks like the rustic capitals common in late-Roman scribal hands.
Here’s the page with MY constellation, Sagittarius:

Searching Google for that Aratea manuscript folio, I came across this stunning image: Perseus (with a dripping Medusa head) in a 9th-century French manuscript of Cicero’s translation of the Aratea

The dots on Perseus’ body indicate the placement of the stars in the Perseus constellation.  His body itself is made up of the text of the Aratea, a design motif that is not uncommon in manuscripts of this era.  The text is written in scriptura continua, continuous letters without word breaks, and in what looks like the rustic capitals common in late-Roman scribal hands.

Here’s the page with MY constellation, Sagittarius:

Sagittarius