CELESTIAL POSTER STUDIO

Star Map Poster Maker

Real celestial data. A little room for your own words. Or simply the sky, without a caption.

Your composition Title optional · up to 80 characters Subtitle optional · up to 160 characters

ThemeFont

Print scientific data captionTitle size points on the printed paper28 pt

Moment & location UTC dateUTC time

UTC keeps a shared moment unambiguous. Dates are processed in your browser.

Place

LatitudeLongitude

North and east are positive. The opening example uses London, clearly identified below; choose your own place to personalize it.

Constellation figures Bright-star names Constellation names Constellation boundariesDetail

Astronomical labels Show labelsLabel density20 requested

Label fontLabel size (pt)

Studio settings, including text and coordinates, stay in this browser’s localStorage until reset. Sharing is explicit; links use a fragment.

Print sizeStar map color

Paper sizeOrientation

PNG: 300 DPI at the selected paper size. PDF: exact print size.

Loading shared astronomical resources…

Made for paper. Grounded in the sky.

HYG stars and Sky Tonight constellation figures are precessed from J2000 and projected for the chosen UTC time and coordinates. This is a geometric decorative chart, without refraction, proper motion, terrain or light-pollution predictions. A daylight chart is not a claim of naked-eye visibility.

Density and label size are independent. The studio reports the number actually placed when labels cannot fit. Preview and export share the same layout in physical millimetres. Raster detail is limited by source resolution even in a 300 DPI file. PDF preserves star geometry and text as vectors. Turning off the data caption also omits chosen Moon/star dates and locations from file metadata; solar source observations remain recorded.

Fonts: Noto Serif and Noto Sans (SIL Open Font License). Star catalog: HYG, CC BY-SA 4.0, via Sky Tonight. User text is never translated automatically.