AO TabMost of the edit controls at

AO Tab

Most of the edit controls at the top of the AO tab have the same meaning as their counterparts on the 'Mount' tab. The guiding algorithms apply to the control of the tip/tilt optical element in the AO device itself, not to the "bump" commands sent to the mount. Since the AO device is not trying to move a heavy piece of equipment, you can afford to be more aggressive in your guide algorithm parameters. If you use a hysteresis-based algorithm, for example, you should probably start with a high level of aggressiveness, perhaps 100%. Or you can choose the 'None' algorithm, which means there will be no damping or history-based algorithm applied at all. In that case, each correction will be based only on the most recent guide frame and will make a 100% correction of the most recent deflection.
You can use the four parameters at the bottom of the AO tab to control the calibration process and the manner in which 'bump' operations are done. The 'calibration step' field tells PHD2 the amount to move the tip/tilt element in each of the up/down/left/right directions, in units of AO steps, during calibration. The guide star position is measured at the beginning and end of each "leg" of the calibration, and the 'samples to average' parameter tells PHD2 how many samples to take at each of these points. Averaging images is important because the seeing will always cause the guide star to "bounce around" a bit. As discussed earlier, the AO unit can make corrections only within a limited range of guide star movement. You will want to initiate mount 'bump' corrections before these limits are actually reached, and the 'bump percentage' field is used for that purpose. To move the mount, the full bump correction is accomplished in steps - the 'bump step' field controls the size of these increments. If the bump operation has begun and the guide star remains outside the "bump percentage" area, PHD2 will increase the bump size until the guide star is back within that range. Additional movement from that point to the "center" position will continue at the specified "bump step size". This complexity is required in order to maintain good guiding, with no elongated stars, even as the mount is being bumped. During the bump operation, the AO is continuing to make corrections, so the long "mount bump" is continuously offset by adjustments in the AO.

結果 (中文) 3:

AO标签

大多数编辑控件在AO选项卡具有相同的含义，与“山”他们。指导算法应用于声光器件本身的倾斜光学元件的控制，而不是“撞”发送到安装命令。由于声光器件是不是要搬一块很重的设备，你可以在你的引导算法参数更积极。如果你使用一个滞后算法，例如，你应该开始一个高水平的侵略性，也许100%。或者你可以选择“不”的算法，这意味着将无阻尼或基于历史的算法适用于所有。在这种情况下，每个校正将只根据最近的导向架，将最新的偏转100%修正。
可以在AO选项卡的底部使用四个参数来控制校准过程和方式所进行的“凸点”。“校准步骤”字段告诉PHD2量分别在上/下/左/右方向移动的倾斜元件，在AO步骤单元，在校准过程中。导星的位置是在校准开始和结束每一个“腿”和“样品测定，平均的参数告诉专业在每一个这些点需要多少样品。平均的图像是非常重要的因为看到总是会引起导星“反弹”一点。如前所述，AO单元只能在有限范围内的导星运动改正。你将要开始安装的“凸点”修正之前，这些限制实际上是达到了，和“凹凸百分比”字段是用于这一目的。移动的山，全凸点校正是在步骤“凹凸步骤“场上完成控制这些增量的大小。如果泵运行开始，导星是“撞”的百分比范围以外，专业会增加凸块的尺寸到导星是在范围内。额外的运动从该点的“中心”地位将继续在指定的“凸点步长”。这种复杂性是必要的为了保持良好的指导，没有细长的明星，甚至是撞山。泵运行期间，AO继续改正，所以长期“山撞”不断在AO调整偏移。