| RefNo | RHB/5/2/1/3/1 |
| Previous numbers | E.53 |
| Level | File |
| Title | 'Heterodyne & speckle' correspondence |
| Date | 1974-1988 |
| Description | Chiefly correspondence between Hanbury Brown and A E H Labeyrie of the Observatoire de Paris regarding different types of interferometers and the model likely to succeed the NSII. |
| Extent | 1 folder. |
| AccessStatus | Open |
| AccessConditions | Restrictions apply - items remain closed for 30 years from date of creation. |