----------------------------------- Andi 22 Sep 2016 12:43 ----------------------------------- :D https://docviewer.yandex.com/?url=ya-disk-public%3A%2F%2FPqfgJ9eoSgtARNqx4WNac3iufYUtdmKL4o%2BhwpfBMik%3D&name=Hershel%20400%20Observing%20Guide%202007.pdf&c=57e3b3e4bd1c