Product images of Newtonian primary mirror



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Our expertise and use of high-quality materials means that our print colours are independently verified to last between 100 and 200 years.
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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.
Delivery & returns
We print everything to order so delivery times may vary but all unframed prints are despatched within 2-4 days via courier or recorded mail.
Delivery to the UK is £5 for an unframed print of any size.
We will happily replace your order if everything isn’t 100% perfect.

Newtonian primary mirror
A Newtonian primary mirror made of glass in a box. The mirror is in its original iron cell with a narrow brass retaining rim and a close-fitting tin cover. It is transparent and is mounted on velvet. It was not removed from its cell. The general figure of the mirror is very even, except for a small central spot of long focus, surrounded by a narrow zone of short focus of radius 1 inch and a narrow zone of short focus about 1 inch from outer edge.
- Image reference: F3359
- National Maritime Museum, Greenwich, London, Herschel Collection