John Flamsteed was England's first Astronomer Royal, and his great atlas — published a decade after his death — was the largest and most magnificent of its century, its constellation figures drawn with Baroque grandeur by a painter of the royal court. Where earlier atlases prized compactness, Flamsteed's prized splendour, each figure sweeping across a huge plate in robes and sinew. The culmination of two centuries of celestial cartography, and the last word before the age of pure scientific austerity set in.

Maker: John Flamsteed
Date: 1729
Medium of the original: Plate
Original held by: Published London · Linda Hall Library
Credit: Published London · Linda Hall Library
Rights: Public domain, verified
Catalogue number: PA-00953

As chosen: 24 x 16 in, art print, classic frame
Picture	24 x 16 in
Outside size	25.6 x 17.6 in
Depth	0.9 in (22 mm)
Weight	[[REAL PROOF NEEDED: shipped weight per size and frame]]
Hanging	[[REAL PROOF NEEDED: hanging hardware Prodigi fits to this frame]]
Material	Enhanced matte art paper, 200 gsm; acrylic glazing
Made in	Charlotte, North Carolina, by Prodigi

Before a size goes on sale, the file is measured against it: pixels per inch at that size, how much of the picture a crop would lose, tone and sharpness. A size that fails is not offered, so there is nothing to choose wrong.

How the print check works

Sizes offered
Size	dpi	Grade	How it fits
12 x 8 in	320	Excellent	Trimmed 4%
16 x 12 in	222	Excellent	Trimmed 7.4%
18 x 12 in	213	Excellent	Trimmed 4%
24 x 16 in	160	Good	Trimmed 4%

Sizes withheld
Size	Why
10 x 8 in	Wrong shape: a 13% crop
14 x 11 in	Wrong shape: a 12% crop
20 x 16 in	Wrong shape: a 13% crop
24 x 18 in	148 dpi; a historical scan is never enlarged
30 x 20 in	128 dpi; a historical scan is never enlarged
30 x 24 in	Wrong shape: a 13% crop
36 x 24 in	106 dpi; a historical scan is never enlarged
40 x 30 in	88 dpi; a historical scan is never enlarged
48 x 36 in	74 dpi; a historical scan is never enlarged
60 x 40 in	64 dpi; a historical scan is never enlarged