可以按setup按钮查看之前的设置是否正确。如果可以确认输入参数没有问题,则可以忽略这个警告。赤道仪校准调整星点到视场中心,调整调焦旋钮,使星点变小合焦。调整增益和曝光,使星点中心不要过曝。观察红点指示的方向,对照刚才的指示标记,进行调整,比如A的螺丝,直到红点在中心。如果想旋紧某个螺丝,先松开其他2个螺丝...
Interesting even at 80degrees the air pattern is affected by dispersion. If your main camera has large-ish pixels you can still try just an IR filter so you don't have to collimate with one setup and image with another. You may not see the ring clearly but the coma dot and flaring ma...