Ketu as the mokṣa-karaka is the giver of emancipation of every kind. Most astrologers only look at the spiritual aspect of freedom from rebirth, which truly is the penultimate goal. But there are many types of bondages and one seeks freedom from these or protection from it. Something like jail term for something wrong done or being trapped when you are not the one who committed the crime.
Either way, you need Gaṇeśa as the devatā of ‘Ketu’ for this freedom activation.
Moon represents Ambikā who manifests as Durgā and all the śaktī of the various devatā. She is the bindu which gives life to every akṣara. If the akṣara represent the deva having the power to enlighten, their very existence and identity depends on the soma-rasa (milk of kindness) they receive from the Moon-mother. The bindu, by nature is simply red, like the blood. And like the blood of the mother, it creates every creature and gods as well.
Om Hrīm Ritam By Swami Vivekananda
This is a Sanskrit hymn to Sri Ramakrishna, composed by Swami Vivekananda.
The brilliance of Swami Vivekananda is seen in providing us with the three vital mantra for praying to Sri Ramakrishna Paramhansa. Such a stotra which has a mantra hidden inside is called ‘Mantra Garbha Stotra’.