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UMBRA — Dark-Sky Observatory & Astro-Lodge

We sell darkness by the hour.

A fictional high-desert observatory whose website computes the actual sky. 9,096 real stars drawn for the site's coordinates at the visitor's clock, an eighteen-month calendar of moonless astronomical dark computed from the…

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UMBRA — Dark-Sky Observatory & Astro-Lodge website detail 1
UMBRA — Dark-Sky Observatory & Astro-Lodge website detail 2
UMBRA — Dark-Sky Observatory & Astro-Lodge website detail 3

Why this website

Made to work for the business, not just the screenshot.

01

A sky that is actually computed

9,096 stars from the Yale Bright Star Catalogue in a 53 KB binary, projected for the site's real latitude and longitude at the visitor's own clock, scrubbable through the night by pointer or keyboard. The positions come from Meeus and are verified against an independent implementation to 0.01°.

02

Availability the moon decides

An eighteen-month calendar of moonless astronomical dark — sun below −18° and moon below the horizon at once — sampled every five minutes across 547 nights. Deep-sky sessions are genuinely unbookable about twenty nights a month, and each closed night says why.

03

Three finished themes, one of them red

Day, night and a hue-locked red night mode that mirrors how observatories preserve dark adaptation, with its own duotone photography so no white appears anywhere. Auto follows the observatory's clock rather than the visitor's.

An AI assistant is included.

Give it a name and teach it about your business. Ask Yantrabot how it can help your visitors.

Included

Everything needed to launch.

  • 24 route patterns and 64 exported pages, including a page per session, instrument, astronomer, room and journal entry
  • Hand-rolled astronomy engine with a test suite pinning it to Meeus's worked examples and to an independent implementation
  • Eighteen-month generated sky calendar with a page per month and every night's figures in a real table
  • Live sky canvas with a keyboard-operable scrubber and a visible-objects table that works with the canvas removed
  • Moon-phase booking demonstration with honest closure reasons and explicit demo boundaries
  • Three authored themes with a written contrast contract, plus red-safe duotone imagery

Ready to make yours

Get UMBRA

$49/month · domain billed separately.