Astrariums are placed all across the two continents within Dragon Age: Inquisition. Players need to solve three puzzles per area to unlock a hidden cache. Each puzzle is a grouping of stars that players will need to turn into an image. Here are how to solve each of them.
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Astrariums in the Hinterlands

The Outskirts Astrarium

- Start on one side of the cross-guard
- Connect to the closest part of the cross-guard
- Connect to either the pommel or hilt of the sword
- Connect back with the empty inner cross-guard piece
- Reconnect to the star from step two
- Connect to the opposite star from step three
- Reconnect with the star from step four
- Connect to the opposite star from step one
Astrarium in Hafter's Woods

- Start at the far left star
- Connect to the star up from the last
- Connect to the star to the right
- Connect to the two stars southeast of that one
- Connect straight south
- Connect with the far southern star
- Connect northeast for the next two stars
- Connect north and then northeast again
- Connect to the center and across
- Connect to the northeastern star and to the star immediately right of it
- Reconnect southeast
- Then connect to the three stars up and to the right to complete the right wing
Astrarium in Northern Hafter's Woods

- Start at the centermost star
- Connect to the far left star
- Connect southeast
- Connect to the far northeastern star
- Reconnect to the first star
- Connect immediately up
- Connect southwest
- Connect to the far northern star
- Connect southeast
- Reconnect to the star in step six
Astrariums on the Storm Coast

Astrarium in Morrin's Outlook

- Start at the upper right star of the tree trunk
- Connect to the star beneath it
- Connect southeast
- Connect southwest
- Connect northwest
- Reconnect to the star from step three
- Connect to the star in the upper middle, left of the starting star
- Connect southwest
- Reconnect to the star from step five
- Connect far southwest
- Connect northwest
- Reconnect to the northeastern star from step eight
- Connect north
- Reconnect northeast to the star from step seven
- Connect to the west northern most star
- Connect southwest
- Reconnect to the star from step 14
- Connect to the east northern most star
- Connect to the southeastern star
- Reconnect to the star from step 17
- Reconnect with the starting star
- Reconnect with the middle southern star
- Reconnect with the upper left star of the trunk
Astrarium in the Great Cove

- Start on the far southwestern star
- Connect northeast
- Connect east
- Connect southeast
- Connect southwest
- Reconnect with the starting star
- Reconnect across to the star from step four
- Connect northeast
- Reconnect southwest
- Connect northwest
- Reconnect across to the east
- Connect northwest
- Reconnect southwest
Astrarium in Apostate's Landing

- Connect with the centered northern star
- Connect northwest
- Connect east
- Reconnect to the center
- Connect westward
- Connect south
- Reconnect to the center
- Connect east
- Connect north
- Reconnect to the center
- Connect southeast
- Connect downward to the center
- Reconnect to the first star
- Connect southwest
- Reconnect down to the center
- Connect westward
- Reconnect northeast
- Reconnect across to the right
- Connect southeast
- Reconnect southwest to the center
- Connect to the star directly south
- Connect northwest
- Reconnect northeast to the center
- Connect southeast
- Connect across previous lines to the southwest
- Reconnect to the right
- Connect southwest
- Connect southeast
- Connect directly north
- Connect back northeast to the center
Astrariums on the Western Approach

Astrarium near the Fortress

- Start with the right most center star
- Connect across to the far left
- Connect southwest
- Connect to the right
- Reconnect north to the second star
- Connect southeast
- Reconnect with the first star northeast
- Connect north
- Connect northwest
- Reconnect with the second star again
- Reconnect northwest to the star from step eight
Astrarium in the Prison Ruins

- Start with the far left star
- Connect to the southern most star
- Connect northwest between the starting star and the one directly north
- Connect to the middle star to the east
- Connect to the most southeastern star
- Reconnect to the second star to the southwest
- Reconnect to the diagonal corner star
- Connect to the far northeast
- Reconnect to the third star
- Reconnect with the first star
- Reconnect with the northern most star
Astrarium in the Echoback Canyon

- Start with the star just northwest of the southern star
- Connect with the southmost star
- Connect north
- Connect east
- Connect diagonally northwest
- Connect right
- Reconnect south
- Reconnect with the first star
- Connect with the far northeastern star
- Reconnect to the closest star to the southwest
- Connect north
- Reconnect right
Astrariums in Crestwood

Astrarium near the Forester Homestead

- Start at the northmost star
- Connect directly down
- Connect southeast
- Connect southeast again
- Connect northeast
- Connect south
- Connect immediately left
- Reconnect to the nearest star to the north
- Connect to the center star
- Connect to the southmost eastern star
- Connect to the star below the ninth
- Connect to the southmost western star
- Reconnect to the center star
- Connect directly left
- Connect southeast
- Connect southwest
- Connect north
- Reconnect with the 14th star
- Connect northeast
- Reconnect with the second star
Astrarium of Glenmorgan Mine

- Start with the middle northern star
- Connect northeast
- Connect diagonally southwest
- Connect northwest
- Reconnect with the first star
- Connect with the northwestern star
- Reconnect across to the eastern star
- Connect with the southern most star
- Reconnect with the closest star
Astrarium on the East Side Hills

- Start with the middle left star
- Connect with the star to the north
- Connect southeast
- Connect southeast again
- Connect west
- Reconnect to the north with the first star
- Connect to the far northwestern star
- Reconnect with the second star
- Connect right
- Connect to the far northeastern star
- Reconnect with the ninth star
Astrariums in the Emerald Graves

Astrarium near the Direstone

- Start with the leftmost star
- Connect northeast
- Connect southeast
- Reconnect with the first star
- Connect southeast
- Connect east
- Connect northeast
- Reconnect northwest
- Connect southwest
- Reconnect southeast
- Connect to the far southern star
- Connect northeast
- Connect to the far eastern star
- Connect northwest
- Connect to the northmost star
- Connect southwest
- Reconnect southeast
- Reconnect south
- Reconnect northwest
Astrarium in the Harrow

- Start with the leftmost star
- Connect northeast
- Connect southeast
- Connect east
- Connect southwest
- Reconnect directly north
- Connect northeast
- Connect northwest
- Connect east
- Reconnect south
- Connect southeast
- Connect southeast again
- Connect northwest
- Connect south
- Connect southwest
- Connect directly west
- Connect northeast
- Connect northwest
- Reconnect northwest
- Connect directly west
- Connect southeast
Astrarium in Nettle Pass

- Start with the southern most west star
- Connect diagonally northeast
- Connect diagonally northwest
- Connect diagonally northeast
- Connect southeast
- Reconnect southwest
- Connect south
- Reconnect west
- Connect north
- Reconnect northwest
- Connect northeast
- Reconnect diagonally southeast
- Reconnect diagonally southwest
- Reconnect diagonally southeast
For more Dragon Age content, be sure to check out All Specializations in Dragon Age Inquisition on Pro Game Guides.