Free

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Released
October 27, 2026
Updated
October 31, 2026

Features

StarParty Outreach screenshot #1 for iPhone
StarParty Outreach screenshot #2 for iPhone
StarParty Outreach screenshot #3 for iPhone
StarParty Outreach screenshot #4 for iPhone
StarParty Outreach screenshot #5 for iPhone
StarParty Outreach screenshot #6 for iPhone
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About

StarParty is built for Outreach Star Parties, whether you are planning one or participating in one. There are tools to help you plan a Star Party. There are tools to help you in answering questions that always get asked. Can't remember the current number of Moons of Saturn? It is there in the app. Where are the Galilean Moons? It is there too. How do the planets orbit Sol? There is an animation to help you demonstrate what it looks like. Want to know what Saturn's rings look like tonight? There! How about how they've changed since your birthday, or since Galileo first saw them? Set it up and watch it happen. What magnification is your scope at? Slide a slider and read it off for eyepieces from 5 mm to 80 mm. It is a tool. Have fun and enjoy it. StarParty is designed purposefully to reduce the light your device puts out into the night sky. Sometimes when you tap to close a menu, StarParty will close down to the main view. From there you are only one tap from the dimmest screen, other than black, that we can get. Most of the views are dark with orange text. It was done on purpose. Questions? Email the developer at clarkw@s-i-g-h.com with the subject line: [StarParty] StarParty is a pocket observing companion for visual astronomers. Everything is calculated on your device from the classic algorithms in Jean Meeus's Astronomical Algorithms, so it works anywhere, even far from a cell signal. THE MOON • Lunar Info: the Moon's age, phase, illumination and rise and set times, with a photo turned the way it looks in your sky tonight, upside down and all in the Southern Hemisphere • Lunar Calendar: a month of phases at a glance • Lunar Phases: every new, first quarter, full and last quarter Moon for any month from 2016 to 2051, ready to email or share • Man, Woman & Rabbit: the figures people have seen in the Moon THE SOLAR SYSTEM • Rise & Set: a timeline of the day showing when the Sun, Moon and planets rise, transit and set • Planet Positions: where each planet sits in its orbit, now or up to a year ahead • Facts for the Sun, every planet, Pluto, the Kuiper Belt and the Oort Cloud, including current distances and light travel times • Jupiter's Galilean moons: where Io, Europa, Ganymede and Callisto are right now, with mirror and invert to match your telescope • Saturn's rings: tilt, size and orientation for any date AND MORE • Position: your latitude, longitude, altitude and compass heading • Hand Distances: measure the sky with your outstretched hand • Telescopes: keep profiles for your scopes and see the magnification each eyepiece gives • Voyagers: how far Voyager 1 and 2 are from Earth and how long their signals take to reach us • Comet Decoder: turn a designation like C/2026 A1 into plain English • Custom observing location: plan for a dark-sky site before you get there PRIVACY No ads, no accounts, no tracking. Your location is used only on your device and never leaves it. For entertainment and planning; accuracy not guaranteed.
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What's New in StarParty Outreach

2026.1030.1841

October 31, 2026

Position and altitude are working. Press the Altitude "Mountain" icon to change between ft and meters. Help menus are now connected to their respective views. A new Messier/Caldwell object view has been added with info on either catalog objects, including best time of year for viewing at your latitude. Minor tweaks, fixes and fiddles to change the workflow.

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