Gavin Morgan

@gavmor.bsky.social

Forward-deployable full-stack consulting software engineer by day, @satchel.ruins.party by night.

An infographic illustration titled "The Princess and the Wishing Well: An Allegory of Hexagonal Architecture." The image uses a colorful storybook scene to map software architecture concepts to fairytale elements:
Center (The Core): A princess sits on a throne inside a stone gazebo. A text box reads: "The Princess is the Core Business Logic. She embodies all business rules and makes decisions, completely isolated from outside concerns. The Core is Technology-Agnostic. The princess is 'blissfully ignorant' of how her requests are fulfilled or where commands come from."
Top Left (Ports): A scroll banner hanging from a tree reads: "The Royal Language is the 'Port'. The princess defines the strict interfaces (the 'what') for all communication with her."
Left Side (Inputs): A crowd of villagers hands scrolls to royal advisors. Text reads: "Driving Adapters: The Court Advisors. They take requests from the outside world (users, texts) and translate them for the princess." A stream of magic flows from the advisors to the princess.
Right Side (Outputs/Infrastructure): A frog wearing a crown and holding a wand sits on the edge of a stone well. Text reads: "Driven Adapters: The Magical Frog. The frog takes the princess's wishes (the 'how') and adapts them to the wishing well (database)." The side of the well is cut away to reveal gears and machinery inside, labeled "Database."

Objects of indiscernible shape obscured by frosted glass

$Comparison of nominal sizes of primary mirrors of notable optical reflecting telescopes, and a few other objects. Dotted lines show sizes of round mirrors that would have had equivalent light-gathering ability. The telescopes shown on this comparison chart are listed below, ordered in each sub-section by (effective) mirror/lens area, low to high, and then by actual/planned first light date, old to new. The "present-day" status is given as of the beginning of 2024. See also List of largest optical reflecting telescopes. Largest refractors (for comparison): 1) Yerkes Observatory's 40-inch (1.02 m) refractor, 1893 (largest refractor consistently used for scientific observations) 2) Great Paris Exhibition Telescope, 49 inches (1.24 m), 1900 (largest refractor ever built; had practically no scientific usage) Ground-based reflectors: 3) Hooker Telescope, 100 inches (2.54 m), 1917; world's largest telescope from 1917 to 1949 4) Multiple Mirror Telescope, 186 inches (4.72 m) effective, 1979–1998; 6.5 m, from 1998 5) LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope), 4.9 m effective at best, 2009 6) Hale Telescope, 200 inches (5.1 m), 1949; world's largest telescope from 1949 to 1975 7) BTA-6, 6 m, 1975; world's largest telescope from 1975 to 1990 (when it was surpassed by the partially-completed Keck I telescope) 8) Large Zenith Telescope, 6 m, 2003; largest liquid-mirror telescope ever built; decommissioned in 2019 9) Magellan Telescopes, two 6.5‑m individual telescopes, 2000 and 2002; 10) Vera C. Rubin Observatory (formerly Large Synoptic Survey Telescope), 6.68 m effective (8.4‑m mirror, but with a big hole in the middle), planned 2025 11) Gemini Observatory, 8.1 m, 1999 and 2001 12) Subaru Telescope, 8.2 m, 1999; largest monolithic (i.e. non-segmented) mirror in an optical telescope from 1999 to 2005 13) Southern African Large Telescope, 9.2 m effective, 2005 (largest optical telescope in the southern hemisphere) 14) Hobby–Eberly Telescope, 10 m effe…$