14 | | • RR is mounted on the SX side. Using RR / ARGOS on-axis calibration light source, M2 and M3 of the LBT are moved to have the on-axis spot on the reference position on SCICAM (also TECHCAM), identified during the internal alignment of the instrument. (Do you want to use the IN-TT mirror for the alignment?) Coma, if present, is minimized looking at the out of focus image, shifting and tilting M2 and keeping the spot fixed on SCICAM. Astigmatism, if present, can be reduced by applying the astigmatism terms to M2 shape. Focus is adjusted shifting M2 along the optical axis. The daytime collimation model is recorded. |
| 14 | • RR is mounted on the SX side. Using RR / ARGOS on-axis calibration light source, M2 and M3 of the LBT are moved to have the on-axis spot on the reference position on SCICAM (also TECCAM), identified during the internal alignment of the instrument. (Do you want to use the IN-TT mirror for the alignment?) Coma, if present, is minimized looking at the out of focus image, shifting and tilting M2 and keeping the spot fixed on SCICAM. Astigmatism, if present, can be reduced by applying the astigmatism terms to M2 shape. Focus is adjusted shifting M2 along the optical axis. The daytime collimation model is recorded. |