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Stellarium is one of the most widely used open-source astronomy software worldwide. Using Stellarium provides access to a vast data repository with over 600,000 stars, hundreds of constellations and asteroids, planets with their suns, and realistic sky effects like light scattering in the atmosphere, as well as comets and simulations of super novas.
Stellarium features numerous plugins developed to enhance users' cosmic exploration. Oculars is one of them. This article will guide you on how to activate and use the Oculars plugin, exploring the sky's appearance through the unique combination of eyepieces and telescopic lenses. Additionally, it delves into what a specific camera can capture in the sky.
What is the purpose of the Oculars plugin in Stellarium?
Oculars is one of the many plugins available by default in Stellarium software. With this plugin, you can approximate the observation range for your astronomy photography plans by entering DSLR sensor information and lens specifications. This provides an accurate depiction of how the target will appear compared to the focal length of your DSLR camera and lens.
Before delving into the necessary steps to activate and use the Oculars plugin, ensure you have downloaded the latest version of Stellarium software to your device.
- Download Stellarium software here: Download Stellarium
How to Activate Oculars Plugin in Stellarium
Step 1: To activate this plugin, press key F2 to open the Configuration window, select the Plugin tab, look for the Oculars entry, and check the Load at startup option, then press the Configure button;
Step 2: Next, you need to configure this plugin accurately for your observation purposes. Choose the Telescopes tab, press Add to create a new option, then input the parameters for your astronomical lens.
Note: Ensure you set the correct focal length, as the magnification will be calculated based on this value.
Step 3: Afterwards, select the Eyepieces tab and input eyepiece parameters. Similar to the Telescopes tab, choose Add and input Field of View and Focal Length, determining the level at which you observe objects and the range of the sky you can view through the eyepiece. aFOV is the magnification factor you will need to enter in Stellarium, and you can skip the other parameters.
Now, if you restart Stellarium, a menu of the Oculars plugin will appear in the top right corner of the screen. You can click the icon in this window or press the Ctrl+O shortcut to activate the Ocular mode. Now, try adjusting the range and eyepiece, as well as exploring various available configurations to see the results.
This article guides you on how to activate and use the Oculars plugin in Stellarium, helping you determine the type of eyepiece you'll need, what to use to 'fill up' a specific constellation in your entire field of view, and the size of a planet at a specific magnification. Additionally, refer to how to add comets to Stellarium here.
