NightFall — Find Dark Skies3.0.2 - App Store

You want to see the stars, but where? City skies glow grey, and the countryside is a question mark. NightFall answers on a map: where light pollution is lowest, how long the drive is, and what you will actually see when you get there.

[9-LEVEL STAR VISIBILITY, AT A GLANCE] The map is painted in nine colors of light pollution - the warmer the color, the brighter the sky. Move the map and the crosshair instantly tells you: . Which visibility level this spot is, from "perfect skies" to "not recommended", each explained in plain words; . "What you'll see looking up": is the Milky Way visible, how many stars, whether clouds glow; . Season-by-season targets: the Sagittarius Milky Way in summer, the Orion Nebula and the Pleiades in winter; . Numbers when you want them: zenith brightness and more live folded away in "View details" - no jargon on the main screen.

[PLACE CARD: IS THIS SPOT WORTH THE DRIVE?] Tap anywhere for the level, elevation, coordinates, and the estimated drive time and distance from your starting point. Share it with friends, or jump straight into Apple Maps, Amap, Baidu, or Google Maps to navigate.

[STAR CHART: LOOK UP BEFORE YOU LOOK UP] A fully rendered night sky, not an illustration: . Drag to look around; scrub the timeline from sunset to sunrise, or follow the real sky live; . Light pollution has a direction: NightFall samples the horizon around you - cities light up exactly where they are; . The skyline is computed from real elevation data: in a valley the hills shield the low sky, on a summit more stars come out; . Constellation lines, the Moon and planets; tap any star for its name, altitude and magnitude; . Fully off-line: catalog, Milky Way and terrain travel inside the app - usable where there is no signal.

[SEARCH AND FAVORITES] . 36 built-in stargazing spots and observatories, filtered instantly off-line; . Your own favorites support pinyin search; starting points and destinations are managed separately and stored on your device only.

[DESIGNED FOR NIGHT USE] A dark interface that is easy on the eyes; adjustable overlay opacity; four base maps (road, terrain, satellite, hybrid); Simplified Chinese, Traditional Chinese and English; universal on iPhone and iPad.

[ABOUT THE DATA, HONESTLY] The light pollution map is built on NOAA VIIRS night lights and the Light Pollution Atlas. It is a model estimate of zenith brightness, not a measurement, and it does not include horizon glow - real skies usually look worse than the map suggests. Seeing also depends on weather and moon phase. Full data sources and notes live in Settings → About.

Tonight looks clear? Open NightFall, find somewhere dark, and look up.

What's New

First release: light pollution map, 9-level star visibility, place cards, off-line star chart, search and favorites. Found a problem, or know a great stargazing spot? Tell us in a review.

Version History - Pick a spot — from search, a saved place, or a station — and it stays pinned on the map: panning around just looks elsewhere while the card keeps describing it (visibility, elevation, drive time, saved state). Before, a small drag dropped it and you had to search again.
- While something is pinned, the crosshair steps aside and a ring marks the spot. Tap “Back to map center” at the top of the card (or tap empty map) to pick with the crosshair again.
- Places found through map search can now be pinned and show their name, too. 3.0.2 1d ago * Switch the star chart between your destination and your starting point to compare the same night at both places.
* Deep-sky objects now cover all 109 Messier objects, each with its real magnitude, and constellation lines are drawn only for the one you are looking at.
* Cleaner mountains: no more banding while you pan, and the air's own glow now covers the ground near the horizon instead of leaving a black edge.
* Added Japanese and iPad landscape. 3.0.1 Sep 25 You want to see the stars, but where? City skies glow grey, and the countryside is a question mark. NightFall answers on a map: where light pollution is lowest, how long the drive is, and what you will actually see when you get there. 3.0.0 Sep 22 修复图片加载问题 2.3.1 02/27/2014 1、天体目标新增Wiki介绍资料
2、支持精彩天文图片保存到相册 2.3.0 02/06/2014 1.性能优化
2.适配iPad
3.自动更新彗星数据，添加ISON和LoveJoy彗星 2.2.5 11/21/2013 修复文字显示颜色的错误 2.2.4 10/31/2013 修复不显示收藏地址的错误
星空指南讨论区:http://meta.yeakong.com 2.2.3 10/08/2013 1.为iOS7优化
2.修复若干错误 2.2.2 10/02/2013 中秋佳节了，赏月观星的好季节。星空指南从即日起至国庆黄金周限时免费15天。欢迎各位与朋友们分享观星的乐趣。 2.2.1 09/14/2013 1.更名星空指南
2.改善银河效果
3.星图操作优化
4.天气展示优化
5.栏目调整 2.2.0 09/04/2013 1.修复若干错误
2.优化非retina屏幕的星点效果
天文爱好者交流QQ群：170699825（注明晴天钟用户） 2.1.1 01/27/2013 晴天钟全新改版
★新增今日星空——为天文爱好者提供适合观测的目标推荐
★新增近期天象——未来一周的热门天象推荐
★新增分享功能——向您的好友分享天文观测的乐趣 2.1.0 11/26/2012 部分闪退用户请删除旧版本再安装新版本
晴天钟用户交流QQ群：170699825（注明晴天钟用户）
1.支持iOS6和最新iPhone 5
2.使用全新的天气图标
3.性能优化 2.0.0 09/30/2012 1.增加东亚可见光云图
2.修复已知bug 1.6.1 04/09/2012 1.修复时区显示错误
2.新增太阳实时图像
3.新增东亚卫星云图 1.6 03/29/2012 使用7timer全新API
增加三大预报模式
天文模式：它的预报时长为3天，提供诸如视宁度、透明度等天文学家比较关心的气象量的预报。
两周展望模式：简明地给出未来9-16天的天气估计。
民用模式：它会简洁地给出未来8日内逐三小时预报。 1.5 12/10/2011 1.修复多次更新用户位置的问题
2.地图显示增加卫星模式 1.14 04/22/2011 修正应用图标显示错误 1.12 03/21/2011 1.更新应用图标
2.修正时间显示格式
3.增加经纬度输入格式的检查 1.1 03/18/2011 1.0 03/14/2011