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THE STARGATE OMNIPEDIA
CRYSTAL, CHEVRON EIGHT
Stargate control node specifically designed to allow an eight-chevron lock.
The average Stargate cannot dial to other galaxies (i.e. eight chevrons); a special crystal is required to allow the power boost to occur, preventing an overload or other catastrophe. Stargates do not possess additional ports for this crystal. Instead, the device must be manually wired into the base of a dial-home device.
Only one crystal of such design is known to exist, making it extremely valuable. Fortunately, the compact design of the unit allows it to be easily removed and transported to another Stargate if the city of Atlantis fell into the hands of a foe.
KEY EPISODE(S) -
Home - Dr. McKay reveals that not any Stargate can dial the Milky Way, and that Atlantis's Stargate possesses the crystal responsible for allowing this to occur.
Before I Sleep - Retreating in defeat, the Ancients leave the chevron eight crystal in Atlantis's D.H.D., allowing them return to Earth following their failed defense of the Pegasus Galaxy.
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TECHNOLOGY:
C
cannon, Goa'uld
cannon tower, Goa'uld
canopic jar
capacitor, Ancient
carocev
ceramic polymer
chair-weapons platform
chevron
chevron eight crystal
Chimera Optics Projection System
cloaking device, personal
cloaking device, Sodan
cloaking remote
cold dialing program
communication device, Goa'uld
communication stone, Ancient
communicator, Asgard
communicator, Genii
communicator, glider
Communicator, Jasec's
communicator, Tok'ra
computer core, Asgard
containment vessel, Ancient
control chair, Ancient
control crystal
control pedestal, Ancient
correlative updates
cryogenic chamber
cryogenic sleep chamber
crystal, chevron eight
crystal, data
crystal skull
crystal tunnels
culling beam, Wraith
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