SynAlign vs Cosmivoy

SynAlign是为配合星达（Sky-Watcher）Star Adventurer星野赤道仪开发的对极轴应用。应用可自动获取用户的地理位置（也可人工设定），以此计算出实时的星空场景。即便不认识星空的用户也可以根据星图界面中的红色箭头提示找到北极星在天上的位置。软件还将给出北极星在极轴望远镜视野中的位置来引导用户精确对极轴。

Your window is a spaceship. The universe is your destination. Leave the Milky Way behind, warp toward Earth, drift beside a deep-space probe, or watch sunlight emerge over a planetary horizon. Cosmivoy brings first-person space exploration to iPhone and iPad, with a continuous 3D universe and a timeline you can control. FLY ACROSS SCALES Travel between planets, stars and nearby galaxies without changing scenes. Warp to a selected object or a region of the window, approach and retreat, and orbit a target to discover it from a new angle. Adjust the field of view from a telescopic close-up to a surrounding 360-degree projection. LOOK AROUND NATURALLY Drag to orbit, use two fingers to look, move closer or farther away, and roll the horizon. Enable motion controls to look around by turning your device. Portrait and landscape layouts adapt to your iPhone or iPad, and the interface can be hidden for an unobstructed view. TAKE CONTROL OF TIME Pause, rewind or fast-forward the universe. Explore prepared observation sites, replay historical spacecraft trajectories from several viewpoints, and take over the flight whenever you like. Record your own journeys and revisit them later. GET CLOSER Explore planetary surfaces, clouds, thin atmospheric light, ring systems, satellites and spacecraft reference models. Land on supported rocky worlds and drive across the surface. Inspect an object, read its encyclopedia entry, and follow links to its public sources. Switch labels, orbit lines and satellite visibility independently; optional fill light reveals details on dark surfaces. BUILT FOR CURIOSITY An offline catalog includes more than 100,000 stars, the major Solar System bodies, selected galaxies, thousands of satellites and small bodies, and reference trajectories for deep-space missions including Webb and the Voyager probes. Core exploration works without an account or network connection. Optional satellite orbit updates require internet access. Explore with a localized interface and offline encyclopedia in 14 language options. No ads, subscriptions or in-app purchases. Cosmivoy combines public astronomical data with visual simulation. Coverage and accuracy depend on the source and date; some shapes, attitudes and galaxy structures are illustrative. Cloud maps do not show live weather. Warp is a science-fiction effect. This app is for exploration and learning, not operational navigation or prediction.