M13 was discovered by Edmond Halley in 1714, and cataloged by Charles Messier on June 1, 1764 into his list of objects not to mistake for comets.
6 min. total exposure
| Exposure | 12*30 sec |
| ISO | 6400 |
| Camera | Nikon D800 [7360 x 4912] |
| Optics | Prime focus of a 10" Meade SCT f/10, 2500 mm focal length on a Celestron CGEM DX mount/td> |
| Filter | None |
| Location | Lower Sackville, Nova Scotia. |
| Date | 2018-08-30 |
| Processing | Processed in PixInsight and Lightroom. |
