| RefNo | HS/17/109 | 
| Level | Item | 
| Title | Letter, from Wilhelm Struve to Sir John Herschel, dated at Dorpat | 
| Creator | Wilhelm Struve | 
| Recipient | John Frederick William Herschel | 
| Date | 4 November 1826 | 
| Description | Autograph letter signed by sender. Mentions a four month absence from Dorpat. Commends [James] South on his work on double stars yet states that South's distances for nearby stars are too large. Considers his measurements, previous to his [Josef] Fraunhofer telescope, significant, even if South refuses to accept them. Thanks John Frederick William Herschel for the difference in the longitudinal measurements between Paris and Greenwich. | 
| Language | German | 
| Extent | 4pp | 
| Format | Manuscript | 
| Place origin | Dorpat, [Tartu], Estonia | 
| Origin coordinates | 58.383333, 26.716667 | 
| Digital images | View item on Science in the Making | 
| AccessStatus | Open | 
| URLDescription | Also available on Epsilon | 
| URL | https://epsilon.ac.uk/view/herschel/letters/Herschel2997 | 
Fellows associated with this archive
| Code | PersonName | Dates | 
| NA5563 | Struve; Friedrich Georg Wilhelm (1793 - 1864); astronomer and geodesist | 1793 - 1864 | 
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); mathematician and astronomer | 1792 - 1871 |