Measure Lunar Features Measure the size of features on the Moon from your own imagesUpload an image of the Moon and measure the physical size of lunar features using your imaging equipment's plate scale and the Moon's angular diameter on your observation date. Plate Scale: (Pixel Size / Focal Length) × 206.265 × Binning
Upload a lunar image below, then use the Line tool to draw a measurement line across a feature, or the Circle tool to draw a circle around a feature. The size of each annotation will be shown in kilometres and miles. Click any annotation to remove it. Circles can be repositioned by dragging.
Please note: All measurements are approximations. Results may be affected by the accuracy of your observation date, manufacturing tolerances in your telescope optics, the precision of your line or circle placement, and any image processing (cropping or resizing) applied to the image after capture.