tcc::InstPosition Class Reference

#include <instPos.h>

Public Member Functions
	InstPosition (std::string const &name="?")
std::string	getName () const
void	setName (std::string const &name)
double	getRotAzMechConst () const
	operator bool () const

Detailed Description

Instrument Position

The following instrument positions are supported by the TCC, but not necessarily by a given telescope:

• PF1 = prime focus the following require a secondary mirror:
• CA1 = Cassegraine focus the following require a tertiary mirror:
• BCx = bent Cassegraine foci at top and bottom of mirror cell (when telescope is at horizon)
• NAx = Nasmyth foci (on the forks)
• TRx = foci on the "truncated" corners of the mirror cell
• the following require a 4th mirror:
• SKx = foci on the sky side of the mirror cell
• MBx = foci on the back side of the mirror cell

            BC1
        -----------
      /             \
  

  TR1 / SK1 SK2 \ TR2 / MB1 — MB2 \ |–| / PF1 \ |–| NA1 | | | CA1 | | | NA2 |–| \ / |–| \ — / TR4 \ SK4 SK3 / TR3

  \ MB4 MB3 /

BC2

front view of mirror cell

Definition at line 49 of file instPos.h.

Constructor & Destructor Documentation

tcc::InstPosition::InstPosition ( std::string const &  name = "?" )

explicit

Definition at line 6 of file instPos.cc.

Member Function Documentation

std::string tcc::InstPosition::getName ( ) const

inline

Definition at line 56 of file instPos.h.

double tcc::InstPosition::getRotAzMechConst ( ) const

inline

Get constant offset of RotAz and Mech angle at current instrument position

RotAz-Mech angle = const + (mult * altitude) where mult = +1 at NA1, -1 at NA2 and 0 at all other instrument positions

RotAz-Mech angle is the orientation at the instrument port of an object pointing towards increasing azimuth, where zero is gravitationally down when the telescope is:

• at zenith for TR and BC positions (on the side of the mirror cell)
• at horizon for all others and positive angles increase (as seen by instrument):
• counter-clockwise for PF, BC and NA (even # of mirrors; inverted image)
• clockwise for CA, SK and MB (odd # of mirrors; non-inverted image)

Definition at line 77 of file instPos.h.

tcc::InstPosition::operator bool ( ) const

inline

Definition at line 79 of file instPos.h.

void tcc::InstPosition::setName

(

std::string const &

name

)

Definition at line 10 of file instPos.cc.

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The documentation for this class was generated from the following files:

• include/tcc/instPos.h
• src/instPos.cc