Product images of Gregorian secondary mirror
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Manufactured in the UK
All products are printed in the UK, using the latest digital presses and a giclée printmaking process.
We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.
Gregorian secondary mirror
A circular concave mirror made as a secondary mirror for a Gregorian telescope. This secondary mirror has a brass mount. It has a good polish except at the edge and has no cover. William Herschel made and used Gregorian telescopes before moving on to Newtonian and later Herschelian (to his own design) telescopes.
Sir William Herschel
- Image reference: F3369
- National Maritime Museum, Greenwich, London, Herschel Collection