It is not one photograph
Every print here is between eight and twenty hours of exposure, taken five minutes at a time across several nights and stacked into one frame. A single sub-exposure looks like almost nothing.
Prints from a back garden
Nothing here was taken in under eight hours.
Every print is hundreds of five-minute exposures, stacked into one frame across several clear nights. The caption tells you how long it took and whether the colours are mapped or measured.
Three to start with
The ones people buy twice.
Sizes
Three, and the biggest is the right one.
A3
297 × 420mm
Base price
A2
420 × 594mm
1.65× base price
A1
594 × 841mm
2.6× base price
How it is made
Three things worth knowing before you buy one.
The colours are real, mostly
Narrowband images map three specific wavelengths onto red, green and blue, so the colour is a choice. Where we have done that, the caption says so.
Printed on cotton rag
308gsm cotton, pigment inks, rated for a hundred years without visible fade. Nebulae are mostly dark, and dark is where cheap paper falls apart.