Here is the idea that moved the Earth. Cellarius diagrams the system of Copernicus — the Sun enthroned at the centre, and our own world reduced to just another planet wheeling around it — a rearrangement so profound it took the ground out from under humanity's feet and remade our place in the cosmos. Rendered with the same Baroque magnificence as the old system it would overthrow. The single most important diagram in the history of science, drawn as a masterpiece.

Maker: Andreas Cellarius
Date: 1660
Medium of the original: Plate
Original held by: Published Amsterdam · Linda Hall Library
Credit: Published Amsterdam · Linda Hall Library
Rights: Public domain, verified
Catalogue number: PA-00978

As chosen: 14 x 11 in, art print, classic frame
Picture	14 x 11 in
Outside size	15.6 x 12.6 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
10 x 8 in	288	Excellent	Trimmed 7.3%
14 x 11 in	206	Excellent	Trimmed 8.9%

Sizes withheld
Size	Why
12 x 8 in	Wrong shape: a 23% crop
16 x 12 in	Wrong shape: a 13% crop
18 x 12 in	Wrong shape: a 23% crop
20 x 16 in	144 dpi; a historical scan is never enlarged
24 x 16 in	Wrong shape: a 23% crop
24 x 18 in	Wrong shape: a 13% crop
30 x 20 in	Wrong shape: a 23% crop
30 x 24 in	96 dpi; a historical scan is never enlarged
36 x 24 in	Wrong shape: a 23% crop
40 x 30 in	Wrong shape: a 13% crop
48 x 36 in	Wrong shape: a 13% crop
60 x 40 in	Wrong shape: a 23% crop