Ealing bay schematic
 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
Ealing bay components
South
East bay circuit
breaker box
Roll off roof rollers
Roof power
RA Power cabinet
Clutch
Rolling
ladder
East
Eyepiece
Finder
Telrad
Counter
weight
Finder
400mm Ealing
telescope
East
door
West
Dec
Clutch
Slew
control
Scope cover
East Ealing bay
North door
Center
astrometry bay
Roll off roof tracks
Meridian
North
Ealing bay open checklist – 1 to 5
5
2
4
3
1
Ealing bay open checklist – 6 to 10
Store
chock
behind
roller.
Store tiedown by
dangling
in corner.
8
7
10
6
9
Ealing bay close checklist – 1 to 6
6
2
1
4
6
3
5
6A eyepiece
screws secured
Parking the Ealing
 Parking point markers
 RA – under weight
 Dec – on declination post
 Scope tube slight raised from horizontal
Dec parking
marker
RA parking
marker
Weight at maximum allowable elevation above 90°
Ealing bay close checklist – 7 to 11
9
10
11
7
8
Ealing bay close checklist – 12 to 16
16
14
15
13
12
Ealing bay close checklist – 17 to 21
17
18
19
15
20
21
When exiting
building, spin
combination lock
to “555.”