Abhishek

Abhishek

MS-Research Student at IIT Kanpur in Geoinformatics

less than 1 minute read

Published:

Astronomia Novaa

Mars in Retrograde

From the Ptolmey’s complex epicyclic explaination of the observed motion of planets over the backdrop of stars. The quest for a simpler and complete explaination, inspired Keppler to look at things from a different perspective. Instead of assuming earth as the center of universe, instead sun is the center and all planets revolve around the massive sun. This then simply explains the retrograde motion of mars as a relative motion seen from earth on the fixed backdrop of night sky.

Trinagulation to the rescue

From the recent adjustment computations course on constrained adjustment of 2-D traingulated networks.

zoom in image of shift in coordinates after adjustment

I can appreciate the elegance and ingunity Keppler emoployed to rationally arrive at the ecliptical nature of orbits. A bold claim to depart from from the sacrade and pristine circular geometry.

You May Also Enjoy

Closer look at the Altimetric Datasets

1 minute read

Published:

Let’s take a look at different datasets with help of some Visualizations. The two datasets used are -

  1. AVISO GDR
  2. ALES OpenADB coastal retracked from Technical University of Munich (TUM)

Orbit Corrections in SNAP

2 minute read

Published:

There’s a pretty common issue while performing orbit correction in ESA-SNAP. There’s a simple way to pre-download the required orbit files:

  1. All the files one at a time (bulk)
  2. As per the requirement.

Learning Rabbit Hole

less than 1 minute read

Published:

I find myself chasing after the next best thing: data structures and algorithms, Linux, Julia, signal processing, etc… The accessibility to learning content online and the lectures/tutorials on YouTube provide an instant dopamine hit from learning new stuff.