MessierMate vs Telescope Log

110 deep-sky objects. See which ones are above your horizon right now, sorted by urgency so you never miss one before it sets. MessierMate is the complete companion for deep-sky observing, and it's completely free. No ads. No in-app purchases. Ever. Whether you're under the stars for the first time or chasing the Messier Marathon, the app tells you exactly what's visible from your location right now, helps you plan future nights, and keeps a log of every session. TONIGHT Open the app and instantly see which of the 110 Messier objects are above your horizon, sorted by urgency so you never miss a galaxy that's about to set. Each card shows altitude, compass direction, time until it sets, and an altitude arc so you know exactly when to look. Filter by object type (galaxies, nebulae, star clusters) and minimum altitude, and switch between three card layouts to match your observing style. PLAN Tap any night on the monthly calendar and see dusk time, moon phase, moonrise, and a count of how many objects are visible. Browse your targets in a list or on a timeline that shows when each object rises, peaks, and sets. Star objects to build a target list for the night. The app automatically detects Messier Marathon nights and flags them on the calendar. LOG Record every session with the date, location, duration, and which objects you observed. Add notes and photos to individual objects. Share a session with a friend via a short share code. No account needed on their end to view it. YOUR SKY, YOUR PRIVACY Your GPS coordinates never leave your device. Only your site name and Bortle class are synced to the cloud, never your exact coordinates. There are no ads and no analytics trackers. Guest mode is fully functional: the app works completely offline without an account. BUILT FOR DARK SITES A dark theme and a Red Night mode protect your night vision. The interface is designed to be usable by feel, with minimal taps needed to log an observation while you're at the eyepiece. WHAT'S INSIDE - All 110 Messier objects with real-time altitude and azimuth calculations - Tonight view ranked by urgency, objects setting soonest appear first - Monthly planning calendar with moon phase and object counts - Rising, peaking, and setting timeline for any night - Automatic Messier Marathon opportunity detection - Session log with notes, photos, and shareable codes - Equipment manager for telescopes, eyepieces, filters, and cameras - Bortle scale support for accurate sky darkness settings - Red Night mode for dark site use - Works offline, no internet connection required for sky calculations - Free, with no ads and no in-app purchases Whether you're hunting your first galaxy or completing the catalog for the tenth time, MessierMate keeps you focused on what matters: the sky.

Stargazing planner and telescope observing log for amateur astronomers. Know what is worth observing tonight with your telescope, your eyepieces and your sky. Then log it in seconds in a true red night mode. Works offline. No account, no ads. Pay once, no subscription. Open Darksite on a clear evening and it lays out your night like an almanac page: your dark window, the moon's schedule, the cloud outlook, and a shortlist of targets picked for your gear. Every pick explains itself in plain words: "M13: peaks 11:24 pm at 68 degrees, fits your 24 mm eyepiece, moon well out of the way, on your Herschel 400 list." No mystery scores. No thousand-object dumps. Then it runs the session. Queue your targets, work through them at the eyepiece in a genuine red field mode (every screen night-vision safe, down to a custom red keyboard), and capture each observation in seconds: hold the button, say what you saw. Date, time, site, gear, magnification and field of view fill themselves in. And it keeps your observing life. Every session searchable by object, eyepiece, sky quality or site. Messier, Herschel 400 and Lunar certificate programs track themselves as you log, with validated, coordinator-ready export packages when you are ready to submit. BUILT FOR OBSERVERS • Tonight, for your telescope: gear-aware target picks with the reasoning spelled out • Session queue: plan the night, reorder by transit, carry unfinished targets forward • A real observing log: seeing and transparency scales, sketches, voice notes, photos • Gear locker: scopes, eyepieces, filters, Barlows; true field of view, magnification and exit pupil computed for every combination • Life-lists: Messier, Herschel 400, Lunar; watch the certificates fill in • Red field mode: near-black and red everywhere, brightness floored, no white flashes • Sky events: ISS passes, meteor showers, aurora outlook, cloud and conditions YOURS, PROPERLY • Private by design: no account, no ads, no tracking. Your log lives on your device • Works fully offline: the catalog, the math and your log never need a signal • Your data is never hostage: CSV and JSON export and import, backup and restore, free, always • Pay once for Pro. No subscription. Ever. Darksite is not a planetarium. It is the missing half of the hobby: the planner and the logbook, done properly. It works alongside the sky-map app you already own.