Bell machine, movement by Johann Alexander Herschel

Bell machine, movement

Johann Alexander Herschel

Fine art poster

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  • Amazing giclée print quality
  • 280gsm thick fine art print paper
  • 100+ year colour guarantee
  • Dimensions:
    • x cm including border ( x in)
    • x cm excluding border ( x in)
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We use a 280gsm 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.

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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.

Bell machine, movement by Johann Alexander Herschel zoom

Bell machine, movement

Telescope bell machine (or 'zone clock') made by Alexander Herschel and used by William Herschel with his 40-inch telescope. Bell machines were designed to solve a problem William Herschel encountered as he used his 20-foot telescope for 'sweeping' for nebulae, directing the instrument to the south and examining the heavens as they drifted past. The method of sweeping for nebulae that William adopted in December 1783 required the workman to raise the tube to the required altitude, and then to raise and lower it in a succession of up-and-down motions that traversed the 'zone' under examination.
Johann Alexander Herschel

  • Image reference: F3935-1

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