Maharishi Dayananda Saraswati on Astrology.

Maharshi Dayananda Saraswati's creation, the Arya Samaj, condemned practices of several different religions and communities, including such practices as idol worship, animal sacrifice, pilgrimages, priestcraft, and offerings made in temples, the castes, child marriages, and discrimination against women. He argued that all of these practices ran contrary to good sense and the wisdom of the Vedas.

Views on superstitions:~

He severely criticized practices that he considered to be superstitions, including sorcery, and astrology, which were prevalent in India at the time. Below are several quotes from his book, Sathyarth Prakash:

"They should also counsel then against all things that lead to superstition, and are opposed to true religion and science, so that they may never give credence to such imaginary things as ghosts (Bhuts) and spirits (Preta)." — Satyarth Prakash

"All alchemists, magicians, sorcerers, wizards, spiritists, etc. are cheats and all their practices should be looked upon as nothing but downright fraud. Young people should be well counseled against all these frauds, in their very childhood, so that they may not suffer through being duped by an unprincipled person." — Satyarth Prakash

On Astrology, he wrote,

when these ignorant people go to an astrologer and say " O Sir! What is wrong with this person? He replies "The sun and other stars are maleficent to him. If you were to perform a propitiatory ceremony or have magic formulas chanted, or prayers said, or specific acts of charity done, he will recover. Otherwise, I should not be surprised, even if he were to lose his life after a long period of suffering."

Inquirer – Well, Mr. Astrologer, you know, the sun and other stars are but inanimate things like this earth of ours. They can do nothing but give light, heat, etc. Do you take them for conscious being possessed of human passions, of pleasure and anger, that when offended, bring on pain and misery, and when propitiated, bestow happiness on human beings?

Astrologer – Is it not through the influence of stars, then, that some people are rich and others poor, some are rulers, whilst others are their subjects?

Inq. – No, it is all the result of their deeds….good or bad.

Ast. – Is the Science of stars untrue then?

Inq. – No, that part of it which comprises Arithmetic, Algebra, Geometry, etc., and which goes by the name of Astronomy is true; but the other part that treats of the influence of stars on human beings and their actions and goes by the name of Astrology is all false. — Chapter 2.2 Satyarth Prakash

He makes a clear distinction between Jyotisha Shaastra and astrology, calling astrology a fraud.

"Thereafter, they should thoroughly study the Jyotisha Shaastra – which includes Arithmetic, Algebra, Geometry, Geography, Geology, and Astronomy in two years. They should also have practical training in these Sciences, learn the proper handling of instruments, master their mechanism, and know how to use them. But they should regard Astrology – which treats of the influence of stars and constellation on the destinies of man, of auspiciousness and inauspiciousness of time, of horoscopes, etc. – as a fraud, and never learn or teach any books on this subject. — Under "The scheme of studies" Page 73 of the English Version of Satyarth Prakash