Figure 1

Schematical representation of the optical layout of the Pittsburgh AOSLO. All the achromatic doublets \(({f}_{\text{x}})\) have focal length of 100 mm excluding the WFS arm where the beam is magnified by 0.75 to avoid beam clipping at the sensor. Before the beamsplitter, all the illumination channels are made co-axial with tip/tilt mounted mirror pairs. The first telescope magnifies the beam 0.5× and the second telescope magnifies the beam by a factor of 2. The remaining mirror telescopes maintain the entrance pupil diameter of 7.2 mm. On the detection side, each dichroic mirror peels off the desired wavelength band for detection which can be then further narrowed with a bandpass filter. For 795 mm confocal reflectance imaging the light is physically separated with a reflective pinhole in order to image single-scattered light (confocal) and multiply scattered light (offset detection) simultaneously. System here is not drawn to scale due to the optical design and beam path existing in three dimensions and keeping the components easily resolvable and distinct.