What is the operation of the Observatory?

About 80 allied ships participating in the "Observatory" operation set out from Wellington (New Zealand), Sydney, Noumea (New Caledonia), Santiago and Pearl Harbor, which are far apart, and assembled in the waters south of Fiji Islands on July 26th. Fletcher vice admiral held a battle meeting on the flagship aircraft carrier Saratoga. General Gormley didn't attend the meeting. He has moved his headquarters to Noumea. Sitting in the rear, he can't actually see his fleet, and he can't study the battle plan with the main commander. After an unsatisfactory landing exercise in Fiji, the fleet headed west, turned north in the Coral Sea, and sailed to Guadalcanal in the rain. The bad weather prevented all Japanese planes, including reconnaissance planes, from taking off. In the early morning of August 7th, the aircraft carrier task force composed of the aircraft carriers Saratoga, Enterprise and Wasp arrived in the designated sea area south of Guadao, while the amphibious combat formation commanded by Turner quietly went north along the west coast of Guadao. When they arrived near Little Savo Island, they split up and entered what was later called Tiediwan (in the subsequent months-long battle, both sides had several ships). At 5: 30, the "Fearless" dive bomber taking off from the aircraft carrier began to bomb the two islands. At 6: 0015, the amphibious formation guns opened fire. 2,000 Japanese engineers on Gua Island are still asleep and unprepared. Only a small number of troops went into hiding to snipe or shoot with machine guns. Seeing that American troops were killed, most Japanese troops fled into the jungle. On the 8th, the Marine Corps 1 Division named Guadao Airport "Henderson" to commemorate Lieutenant Colonel Loftan Henderson, a marine flying hero who died over midway.