Navagraha's are the main deities of Hinduism. The cosmic energy we receive has different forces from these celestial bodies.
In this Navagraha Deep (Lamp) Surya (Sanskrit: Surya-Sun) center occupies the place.
Surya is the source of life in our solar system. The light of our darkness is reflected in the light of wisdom. In the Navagraha lighthouse, Surya is surrounded by other planets (planets).
The lamp reflects nine faces. Saturn face is made of steel or iron, Sani Dev (Sanskrit: Sani), which indicates the inner strength established in the truth. Since the western direction has Saturn faces, the lamp should be placed.
Benefits: Lighting this Navagraha Deep/Navagraha Deepam in the house brings prosperity, good health, peace of mind, and courage.