Tag: adaptive
AO Cabling
Sticky Worm
It began, as all these things do, with a phone call from Liz…
“It’s stuck”
“What is stuck?”
“SFP won’t move in K2AO.”
“Do not try to move it any further, I am up tomorrow for SegEx, I will go look at it.”
SFP is different, it can crash into the rotator if it gets lost. There is no real way to fix this issue, it has to be this way. SFP stands for Simulator Fiber Positioner, an artificial star created with a optical fiber. Placing the tip of the fiber at the telescope focus creates a bright dot of light that we can use to align and calibrate the AO system. The three axis stage can move the fiber into the light path and accurately position it just where you need it for system tests. There is also a diagonal mirror used to inject light from the telescope simulator and the spectral calibration source mounted atop the simulator.