Newtonian primary mirror
Image information
Sizing information
| Overall size (inc frame) | x cm ( x in) |
| Depth | cm (in) |
| Artwork | x cm ( x in) |
| Border (mount) |
cm
top/bottom
(in)
cm left/right (in) |
| The paper size of our wall art shipped from the US is sized to the nearest inch. | |
Newtonian primary mirror
A Newtonian primary mirror of speculum metal with a focal length of 313.06cm. The mirror is very smooth and regular but for a prominent zone of short focus whose radius was about 2/5 that of the whole mirror. There is also a small spot of short focus at the centre. The whole mirror appeared under the knife-edge to be of nearly spherical figure, or perhaps very slightly parabolic.
Sir William Herschel
- Image reference: F3364
- National Maritime Museum, Greenwich, London, Herschel Collection
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We use a 240gsm fine art paper and premium branded inks to create the perfect reproduction.
Our expertise and use of high-quality materials means that our print colours are independently verified to last between 100 and 200 years.
Read more about our fine art prints.
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.
Due to the coronovirus pandemic and Brexit situation, current shipping times may be longer, particularly for destinations outside the UK.
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.
