next up previous contents
Next: Guide Camera Up: Telescope and other Devices Previous: The Great White Spot   Contents

Guide Stages

Figure 3.23: Guide Vignetting Map
Image img009


Table 3.15: Guide X Specifications
Drawing: RCT001/5
EOS Drawing: SCH-4025-1
Manual: MM page 10-5
Scale: 2000 counts per millimeter
Motor:  
Motor Encoder:  
Limits: two level on each side
Controller:  
X Stage: ATS100-100 Aerotech
X Drive Amplifier: Amp 1
Homing: 2mm/rev lead screw, 1000 line encoder For the ATS-100
Range: -202500 to +9500 (106mm)
MaxSpeed: 10000 cts/sec)
Encoder Zero: closed to positive end probe out of field of view

Note: X-axis, positive motion is in negative declination.

Homing may take a minute.


Table 3.16: Guide Y Specifications
Scale: 2000 counts per millimeter
Motor:  
Motor Encoder:  
Overall Encoder:  
Limits: none
Controller:  
Y Stage: ATS100-200
Y Drive Amplifier: Amp 2
Homing: 2mm/rev lead screw, 1000 line encoder for the ATS-100
Range: -8500 to +403000 range is 205.75mm
Max Speed: 10,000 cts/sec
EncoderZero: close to negative end (out of FOV)

Probe is centered in the FOV at X = -189350, Y = +199500


Table 3.17: Guide Z (Focus) Specifications
Scale: 8000 counts per millimeter
Motor Encoder:  
Limits:  
Controller:  
Z Stage: ATS03005
Z Drive Amplifier: Amp_3
Homing: 0.5mm/rev lead screw, 1000 line encoder for the ATS-300
Range: -8500 to +429500, range : 54.75mm
MaxSpeed: 15000 cts/sec
EncoderZero: near negative range of motion
Guidercollimated with camera: -8000?

Note: May take 2 minutes to home.

EOS 11Sep2003
ProbeX -3350 X counts = +20 arc-seconds dec
ProbeY -3300 Y counts = -20 arc-seconds HA
ProbeZ +120000 Y counts =  +.325 mm Focus

See Sections 5.7.8 5.7.9 and 5.1.6 for operating software.


next up previous contents
Next: Guide Camera Up: Telescope and other Devices Previous: The Great White Spot   Contents
Louis-Gregory Strolger 2012-01-09