1. M1M3 Status & Near Future Milestones C.Araujo/ J. Sebag 1

2. 2 Acceptance test Acceptance Test Plan https://docushare.lsstcorp.org/docushare/dsweb/ImageStoreViewer/Document-15262 Final Report https://docushare.lsstcorp.org/docushare/dsweb/ImageStoreViewer/Document-17506

3. 3 M1M3 Protected coating

4. 4 Mirror Transport May 20 

5. 5 M1M3 Mirror Storage in Tucson Plan to visit/inspect mirror every 1.5-2 months May 20 2015 July 23 2015 Arrival at Storage Facility Final Placement of the mirror container Last Inspection at Storage Facility

6. 6 Near Future Activities / Milestones…

7. M1M3 Status 7 Plan to visit every 1.5 – 2 months 20142017 11201505081120160508112017 Transport Box Arrives @ SOML Hard points & support fixtures attached to mirror Acceptance test @ SOML Transport to Storage Place @ Million Air Cell Assembly Integration Visit/Inspection Preparation Final Test at Mirror Lab Mirror at storage place

8. Preparation for M1M3 Interferometric Test 8 Before Shipping of the M1M3 mirror to Chile, the M1M3 mirror cell assembly (mirror+cell+mirror support system) will be tested in 2017 at Richard F. Caris Mirror Lab (ex. SOML) with the same interferometric testing configuration used during mirror polishing. Mirror Lab Test Tower Configuration M1M3 mirror Interferometers M1M3 Cell M1M3 cell M1M3 Mirror Support System M1M3 mirror

9. 9 M1M3 Baffle Located @ M1M3 boundary 50 mm wide 5 m diameter Material samples Acktar Protostar Genesee Scientific Protectokote Requirements Stray light control Removable (?) Washable (?) Tests on borosilicate samples How to install it

10. 10