<p>I have an open cluster with calculated percentage of polarization and position angle. I want to have it's scatter plot in Ra vs Dec plane and superimpose a galactic parallel on it. How to plot the galactic parallel? Like the line b=-0.14 deg shown in the figure. I have used python for the scatter plot and also I have plotted the percentage of polarization and position angle but I am unable to the plot the galactic latitude line. Can anyone help me in this regard? <a href="https://i.sstatic.net/2bJiM.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/2bJiM.jpg" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2023-06-14T13:20:33.963Z
Pick a point on your plot that you'd like th galactic parallel to pass through. Convert equatorial to galactic using widely available conversion equations. Then pick a point same latitude different longitude and convert galactic to equatorial. Then you have two points on the parallel. For the scale you're showing the different longitude should be about 1/4 degree different.
stretch
CC BY-SA 4.0
2023-06-15T16:13:41.023Z
Okay. Thank you so much. I was able to do it.
Samrat Biswas
<declination><right-ascension><star-cluster><polarization>
Plotting galactic latitude in Ra vs Dec plane
Samrat Biswas
# Plotting galactic latitude in Ra vs Dec plane

(Asked by: username_0 on 2023-06-14)

I have an open cluster with calculated percentage of polarization and position angle. I want to have it's scatter plot in Ra vs Dec plane and superimpose a galactic parallel on it. How to plot the galactic parallel? Like the line b=-0.14 deg shown in the figure. I have used python for the scatter plot and also I have plotted the percentage of polarization and position angle but I am unable to the plot the galactic latitude line. Can anyone help me in this regard? [![enter image description here](https://i.sstatic.net/2bJiM.jpg)](https://i.sstatic.net/2bJiM.jpg)

**Tags:** declination, right-ascension, star-cluster, polarization

> **Comments:**
> **username_1**: Pick a point on your plot that you'd like th galactic parallel to pass through. Convert equatorial to galactic using widely available conversion equations. Then pick a point same latitude different longitude and convert galactic to equatorial. Then you have two points on the parallel. For the scale you're showing the different longitude should be about 1/4 degree different.  
> **username_0**: Okay. Thank you so much. I was able to do it.  

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## 0 answers

