diff --git a/plugins/feature/sid/readme.md b/plugins/feature/sid/readme.md
index 3796d8920..2f87dd95a 100644
--- a/plugins/feature/sid/readme.md
+++ b/plugins/feature/sid/readme.md
@@ -140,7 +140,7 @@ When checked, displays imagary from NASA's SDO (Solar Dynamic Observatory) and E
SDOs images the Sun in a variety of UV and EUV wavelengths. SOHO shows images of the solar corona. The images are near real-time, updated every 15 minutes.
-Solar flares are particularly visible in the AIA 131 Å images.
+Solar flares are particularly visible in the AIA 131 Ã… images.
18: Image or Video Selection
@@ -150,24 +150,24 @@ Selects whether to display images (unchecked) or video (checked).
Selects which image / wavelength to view.
-* AIA 94 Å to 1700 Å - The AIA (Atmospheric Imaging Assembly) images the solar atmosphere at multiple EUV (Extreme Ultraviolet) and UV (Ultraviolet) wavelengths:
+* AIA 94 Ã… to 1700 Ã… - The AIA (Atmospheric Imaging Assembly) images the solar atmosphere at multiple EUV (Extreme Ultraviolet) and UV (Ultraviolet) wavelengths:
| Band | Region |
|---------|-----------------------------------------|
-| 94 Å | Flaring |
-| 131 Å | Flaring |
-| 171 Å | Quiet corona, upper transition region |
-| 193 Å | Corona and hot flare plasma |
-| 211 Å | Active corona |
-| 304 Å | Chromosphere, transition region |
-| 335 Å | Active corona |
-| 1600 Å | Transition region, upper photoshere |
-| 1700 Å | Temperature minimum, photosphere |
+| 94 Ã… | Flaring |
+| 131 Ã… | Flaring |
+| 171 Ã… | Quiet corona, upper transition region |
+| 193 Ã… | Corona and hot flare plasma |
+| 211 Ã… | Active corona |
+| 304 Ã… | Chromosphere, transition region |
+| 335 Ã… | Active corona |
+| 1600 Ã… | Transition region, upper photoshere |
+| 1700 Ã… | Temperature minimum, photosphere |
[Ref](https://sdo.gsfc.nasa.gov/data/channels.php)
* MHI Magnetogram - HMI (Helioseismic and Magnetic Imager) Magnetogram shows the magnetic field in the photosphere, with black and white indicating opposite polarities.
-* MHI Intensitygram - Brightness in a visible light band (6173 Å - Red - Iron spectral line), useful for observing sun spots.
+* MHI Intensitygram - Brightness in a visible light band (6173 Ã… - Red - Iron spectral line), useful for observing sun spots.
* Dopplergram - Shows velocities along the line-of-sight.
* LASCO (Large Angle Spectrometric Coronagraph) shows solar corona. C2 shows corona up to 8.4Mkm. C3 shows corona up to 23Mkm.