/// <summary>
/// Gets Field Of View parameters as seen by camera with telescope equipped by Barlow lens or reducer
/// </summary>
/// <param name="telescope">Telesope parameters</param>
/// <param name="camera">Camers parameters</param>
/// <param name="lens">Barlow lens or reducer parameters</param>
/// <param name="binning">Binning value</param>
/// <param name="rotation">Camera rotation angle</param>
/// <returns>
/// Field Of View parameters as seen by camera with equipment provided
/// </returns>
public static CameraFieldOfView GetCameraView(Telescope telescope, Camera camera, Lens lens, int binning, int rotation)
{
float focalLength = telescope.FocalLength * (lens != null ? lens.Value : 1);
float focalRatio = focalLength / telescope.Aperture;
float dawesLimit = GetDawesLimit(telescope.Aperture);
float resolutionHorizontal = ((camera.PixelSizeWidth * binning) / focalLength) * 206;
float resolutionVertical = ((camera.PixelSizeHeight * binning) / focalLength) * 206;
float fovHorizontal = (resolutionHorizontal * (camera.HorizontalResolution / binning)) / 3600;
float fovVertical = (resolutionVertical * (camera.VerticalResolution / binning)) / 3600;
return(new CameraFieldOfView()
{
FocalRatio = focalRatio,
Resolution = new SizeF(resolutionHorizontal, resolutionVertical),
Size = new SizeF(fovHorizontal, fovVertical),
Rotation = rotation,
Binning = binning,
DawesLimit = dawesLimit
});
}
/// <summary>
/// Gets Field Of View parameters as seen by eye with telescope equipped by eyepiece and Barlow lens or reducer
/// </summary>
/// <param name="telescope">Telesope parameters</param>
/// <param name="eyepiece">Eyepiece parameters</param>
/// <param name="lens">Barlow lens or reducer parameters</param>
/// <returns>
/// Field Of View parameters as seen by eye with equipment provided
/// </returns>
public static TelescopeFieldOfView GetTelescopeView(Telescope telescope, Eyepiece eyepiece, Lens lens)
{
float focalLength = telescope.FocalLength * (lens != null ? lens.Value : 1);
float focalRatio = telescope.FocalLength / telescope.Aperture;
float dawesLimit = GetDawesLimit(telescope.Aperture);
float magnitudeLimit = GetManitudeLimit(telescope.Aperture);
float magnification = focalLength / eyepiece.FocalLength;
float fov = eyepiece.FieldOfView / magnification;
float exitPupil = telescope.Aperture / magnification;
return(new TelescopeFieldOfView()
{
FocalRatio = focalRatio,
ExitPupil = exitPupil,
DawesLimit = dawesLimit,
Magnification = magnification,
Size = fov,
VisualMagnitudeLimit = magnitudeLimit
});
}
