The important information is what were used and what should be replaced later. || Optics name || Type of the optics || The holder || Note || || 1st steering mirror || TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D (From PSL room) || Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG (all from NAOJ)|| The M4 screw needs vent hole; The foot of the pillar is now fixed with a tentative dog clamp, and should be replaced later; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility. The mirror should be replaced with CVI HM-2037-45 (from NAOJ)??|| || Harmonic BS || HBSY21 (From NAOJ for this purpose)|| Polaris-K2S1+ washed M4 screw + TR75V/M + PH75V/M + washed M6 screw + BA1V/M (all from NAOJ)|| Nothing special but the post system should be replaced with a fixed height one; to more stiffer one.|| || 2nd steering mirror || TFVMQ-50.8C10-20-W1D-532/1064-ARS-30/40D (From PSL room) '''''today.''''' ||Polaris-K2S1 + washed but not vented M4 screw + ME-KAGRA-1704107-A-DWG (all from NAOJ) || The M4 screw needs vent hole; The foot of the pillar is now fixed with a tentative dog clamp, and should be replaced later; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility; actually this mirror needs to reflect only green, so using the dichroic mirror is too much and should be replaced later.|| || Collimation lens for green (3rd BRT lens for green)|| SLB-50.8-200NM (From NAOJ for this purpose) || VLHG-50.8 + '''''unwashed M6 imo screw''''' + TR75V/M + PH75V/M + washed M6 screw + BA1V/M (all from NAOJ) || '''''The VLHG-50.8 required M6 imo screw!!!!!!'''''; need a '''''proper tool''''' to tighten the PEEK retainer of VLHG-50.8; there is a memo in the mirror's outer diameter and need to be erased for vac compatibility.|| Parts outside of the chamber (in other words, stuffs on the optical table) The naming convention is [[http://klog.icrr.u-tokyo.ac.jp/osl/?r=4589|here]]. || Optics name || Type of the optics || the holder || Note || || Green's periscope || HM-2037-45, two pieces (From NAOJ but...) || The pillar, and the 2inch holders and so are all from NAOJ|| All should be replaced.|| || Steering mirror 1 || PF20-03-G01 (From NAOJ for this purpose) || The 2inch holder is from PSL room. Pedestal is ... || || || Green GPT lens || SLB-25.4-500PM (From NAOJ for this purpose) || LM1XY/M (From NAOJ for this purpose)+ post + some parts || The post system should be improved. || || Steering mirror 2 || '''''PF10-03-G01???''''' (From NAOJ for this purpose) || The 1inch holder is from NAOJ || The holder is old and so should be replaced. Replaced to 2inch!|| || Green BS 1 || BSW10 (From NAOJ for this purpose) || The holder is from NAOJ || Replacing to 2inch would be better.|| || Green BS 2 || BSW10 (From NAOJ for this purpose) || The holder is from NAOJ || Replacing to 2inch would be better.|| || Mirror || '''''PF10-03-G01???''''' (From NAOJ for this purpose) || The 1inch holder is from NAOJ || The holder is old and so should be replaced. ||