# Sunpy to get Helio Feature Catalogue inforrmations

**URL:** <https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835>\
**Category:** SunPy\
**Tags:** sunpy, question\
**Created:** [December 3, 2023, 6:46pm UTC](https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835 "2023-12-03T18:46:37Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![saynovea](https://dub1.discourse-cdn.com/flex005/user_avatar/community.openastronomy.org/saynovea/32/479_2.png) [@saynovea](https://community.openastronomy.org/u/saynovea)\
**Post date:** [December 3, 2023, 6:46pm UTC](https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835/1 "2023-12-03T18:46:37Z")

</div>

Hello, I’m working on a project where I need to analyze sunspots. The HElio Feature Catalogue from the Heliophysics Integrated Observatory has all the data that I need, but I have no idea how can I get these information with my code. In the website it says that it can be done with SunPy but it is still under development, latest update 2016. So is there a way to read those information with python now? And how can I do that?

Also, right now I’m using drms to get images of sunspots from JSOC HMI and I to measure the area of the spots in pixels, maybe it’s a very stupid question but, how can I turn the area of the spot in squared degrees to compare it to the HFC data?

Thank you

---

<div class="post-metadata">

**Author:** ![nabobalis](https://dub1.discourse-cdn.com/flex005/user_avatar/community.openastronomy.org/nabobalis/32/14_2.png) [@nabobalis](https://community.openastronomy.org/u/nabobalis)\
**Post date:** [December 3, 2023, 7:49pm UTC](https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835/2 "2023-12-03T19:49:40Z")

</div>

Hello @saynovea,

To query the HElio Feature Catalogue, I think you can use [HECClient — sunpy 5.1.0 documentation](https://docs.sunpy.org/en/stable/generated/api/sunpy.net.helio.HECClient.html#sunpy.net.helio.HECClient), if you look at the examples at the bottom of that page.

---

<div class="post-metadata">

**Author:** ![saynovea](https://dub1.discourse-cdn.com/flex005/user_avatar/community.openastronomy.org/saynovea/32/479_2.png) [@saynovea](https://community.openastronomy.org/u/saynovea)\
**Post date:** [December 4, 2023, 5:47pm UTC](https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835/4 "2023-12-04T17:47:34Z")

</div>

As I understood it works o ky to get information about the HEC (Heliophysics event catalogue) not the HFC

---

<div class="post-metadata">

**Author:** ![nabobalis](https://dub1.discourse-cdn.com/flex005/user_avatar/community.openastronomy.org/nabobalis/32/14_2.png) [@nabobalis](https://community.openastronomy.org/u/nabobalis)\
**Post date:** [December 4, 2023, 6:02pm UTC](https://community.openastronomy.org/t/sunpy-to-get-helio-feature-catalogue-inforrmations/835/5 "2023-12-04T18:02:05Z")

</div>

If that is the case (I am not familiar with the difference, they look pretty similar to my naive eye), then there is unfortunately no HFC client within sunpy.