1. Ealing bay schematic

2.  Door lock, chock or tie-down  Light switch – dual for white & red lights  Power switch  Circuit breaker  Telescope drive clutch – declination  Telescope drive clutch – right ascension  Roll off roof roller  Roll off roof track  “Hentchy” hole for outside power cords  Log book  Rolling ladder  Slew controller Ealing bay schematic legend

3. Ealing bay components East 400mm Ealing telescope Meridian Center astrometry bay Power cabinet Roll off roof tracks North door East door Roll off roof rollers Counter weight East bay circuit breaker box Rolling ladder Scope cover North West South Dec Clutch Finder East Ealing bay Finder Telrad Eyepiece Slew control Roof power RA Clutch

4. Ealing bay open checklist – 1 to 5 1 2 3 4 5

5. Ealing bay open checklist – 6 to 10 6 7 8 9 10 Store chock behind roller. Store tie- down by dangling in corner.

6. Ealing bay close checklist – 1 to 6 6 2 3 4 1 5 6 6A eyepiece screws secured

7. Parking the Ealing  Parking point markers  RA – under weight  Dec – on declination post  Scope tube slight raised from horizontal Weight at maximum allowable elevation above 90° RA parking marker Dec parking marker

8. Ealing bay close checklist – 7 to 11 7 10 9 8 11

9. Ealing bay close checklist – 12 to 16 12 16 15 14 13

10. Ealing bay close checklist – 17 to 21 21 18 19 15 17 20 When exiting building, spin combination lock to “555.”