Dear,

Astrophysics is a specialisation more commonly offered at the postgraduate or doctoral level in India. Here is a list of top colleges in India for astrophysics that you can explore:

• Indian Institute of Science, Bangalore
• Indian Institute of Astrophysics, Bangalore
• Physics Research Laboratory, Gujarat
• Tata Institute of Fundamental Research (TIFR)
• Aryabhatta Research Institute of Observational Sciences (ARIES), Uttarakhand
• Institute of Fundamental Research, Tamil Nadu
• Raman Research Institute, Bangalore
• National Center for Radio Astrophysics, Pune
• Harish Chandra Research Institute, Allahabad
• JNTU College of Engineering, Hyderabad
• Inter Universities Center for Astronomy and Astrophysics, Pune

You can find more information about these colleges on their respective portal.

Hope this helps!