Field of View Indicators for TheSky
The following is a list of field of view indicators
to be used in TheSky software when using the F/8 secondary mirror on the 41" telescope.
These are listed in the following order: name, height, width, and shape.
Measurements are given in arcminutes.
- Centers: 42.5' by 1.50' rectangular
- Boundaries: 90' by 60' rectangular
- Division: 15' by 60' rectangluar
- Hole: 90' circular
- The right stage sees an area that is South-Southwest of the center channel.
- This means that you have to move the telescope North-Northeast to
move a star from the center channel to the right channel.
- The X-axis of the XY-stage is about 15 degrees from celestial north as shown
in the image to the right.
- Tilt Angle of Three Channel Photometer = 14.8 degrees
- Offset Stage Motion Conversion = 141.732 stepper motor pulses per millimeter
- Home Positions
- Left Stage: X = -8280 pulses (-2.3 inches), Y = 0 pulses (0 inches)
- Right Stage: X = 8280 pulses (2.3 inches), Y = 0 pulses (0 inches)
- Note: Line up the allen bolts with the hole positions for the X home positions
and use line of site for the Y home positions. The left and right photometer tubes should
then be spaced 6.3 inches from the center photometer tube.