Stargazing Hub vs Elevation Map

Celestial events happening? Use Stargazing Hub! Explore historical skies, simulate star trails, and plan tonight's targets. A wider view of the universe, from lunar terrain to Jupiter's moons. Stargazing Hub combines a real-time star map, sky image recognition, observing forecasts, light pollution maps, satellite passes, and imaging tools for astronomy enthusiasts and astrophotographers. Why choose Stargazing Hub? · [Sky Image Recognition]: Analyze sky photos locally or online. Identify constellations, deep-sky objects, planets, and astronomical parameters to help you review your images and confirm target positions. · [Real-Time Star Map and AR Sky]: Explore constellations, constellation artwork, traditional star lore, the Milky Way, deep-sky objects, comets, meteor showers, satellites, and viewfinder overlays. Use the star map for planning, or overlay it on the real sky with AR. · [Real Observing Conditions]: Simulate light pollution, moonlight, twilight, horizon, terrain, and imaging conditions before you head out. For deep-sky targets, switch DSS layers to check background context and plan composition. · [Viewfinder and Mosaic Planning]: Calculate real fields of view from cameras, lenses, telescopes, eyepieces, binoculars, and smart telescopes. Plan and export mosaic panels for wide deep-sky targets. · [Stargazing Index Forecast]: Compare hourly observing quality using cloud cover, transparency, seeing, moonlight, wind, humidity, and more, so you can choose better observing windows. · [Astronomical Calendar]: Track sunrise, sunset, moonrise, moonset, moon phases, Milky Way visibility, moonless windows, meteor showers, planets, comets, and other events. · [Maps and Environment]: Check global light pollution, stargazing index maps, aurora maps, weather forecasts, air quality, and sunrise or sunset glow forecasts. · [Satellites and Space Station]: View real-time positions, brightness estimates, and pass predictions for the Chinese Space Station, Starlink, and other satellites. · [Astrophotography Tools]: Use calculators for night-sky photography, guiding accuracy, equivalent focal length, polar scope simulation, and red-light mode. Download Stargazing Hub and keep your star map, forecasts, recognition tools, and imaging helpers in one place. ------------------------------------------------------- Subscription Service Details: 【Ad-Free Monthly Subscription】 - Subscription Period: 1 month - Subscription Price: 3.99 USD per month 【Ad-Free Quarterly Subscription】 - Subscription Period: 3 months - Subscription Price: 9.99 USD per 3 months 【Ad-Free Annual Subscription】 - Subscription Period: 1 year - Subscription Price: 29.99 USD per year - Payment: Once the user confirms the purchase and completes the payment, the charge will be recorded to the iTunes account. - Cancellation: To cancel the subscription, please manually turn off the auto-renewal at least 24 hours before the current subscription expires via 【Settings】 > 【Apple ID, iCloud, iTunes & App Store】 > 【Subscriptions】. - Renewal: The iTunes account will be charged within 24 hours before the subscription expires, and upon successful deduction, the subscription period will be extended according to the chosen plan. - Privacy Policy: https://laysky.com/en/privacypolicy.html - Terms of Service: https://laysky.com/en/useragreement.html - Ad-Free Service Agreement: https://laysky.com/en/subscription.html For support and feedback, email twtams@163.com. Creative asset credits: Milky Way panorama by Axel Mellinger, via Stellarium (https://github.com/Stellarium/stellarium/blob/master/CREDITS.md), used with permission to modify and redistribute with credit. Moon texture by Solar System Scope / INOVE (https://www.solarsystemscope.com/textures/), CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Reprojected, cropped, color-adjusted, lit and composited for Tianwentong. No endorsement implied.

As the altitude increases, the air becomes thinner, the temperature decreases, the air pressure decreases, the boiling point of water decreases, the oxygen content in the air decreases, and the oxygen partial pressure decreases. When we climb higher mountains or go to high altitude areas, this knowledge is what we need to know. Elevation Map-Mountain Weather app uses the relationship between altitude and air pressure, air temperature, and oxygen, and uses altitude to calculate air pressure, air temperature, and oxygen or calculate altitude by air pressure. At last, the app provide mountain weather forecast for 7178 mountains in the world. According to the oxygen-hemoglobin dissociation curve, healthy people can maintain normal blood oxygen saturation at an altitude of 3000 meters or even 4000 meters and 5000 meters. However, when the pH drops, the body temperature rises or other reasons will reduce the oxygen affinity, the blood oxygen saturation will drop to an abnormal range at this altitude, causing hypoxia. The app simulates the dissociation curve to help users analyze the influence of body temperature and PH on blood oxygen saturation, and predict blood oxygen saturation at different altitudes. The Elevation Map-Mountain Weather app provides global elevation data, which can be queried on the map or by input longitude and latitude value. Under the query results, you can set the sea level temperature and air pressure to calculate the air pressure, air temperature, boiling point, oxygen content, oxygen partial pressure, and blood oxygen saturation at the elevation. An elevation color map is also provided to visualize global elevation distribution. The Elevation Map-Mountain Weather app is divided into the following five parts: 1. Current: Combining GPS, device barometer, and real-time weather at the current location, get the current location's altitude, air pressure, water boiling point, oxygen content and blood oxygen. 2. Map: Move the map to get the elevation of any location, and calculate the air pressure, air temperature, boiling point, oxygen content, blood oxygen of the location given the sea level air pressure temperature combined with the altitude 3. Tools: The tool part mainly has 6 functions: 1. Elevation search 2. Altitude list 3. Altitude calculate 4. Oxygen-hemoglobin dissociation curve 5. Blood oxygen log 6. Elevation Color Map 4. Mountain Favorite mountain and mountain weather forecast at different elevation。 Disclaimer:(Mountain weather forecast) This application is not dedicated to predicting various sudden weather disasters in mountainous areas. It mainly informs about meteorological factors that always exist and change with altitude, such as temperature, air pressure, humidity, oxygen content, etc. IN NO EVENT SHALL THE APP BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL, LOST PROFITS, INDIRECT OR OTHER DAMAGES. When conducting such activities, please choose a more accurate, more specific, and more comprehensive forecast plan 5. Settings 【Pro】 1.Mountain weather forecast 2.unlock all tools Purchase rules: [Month Pro] Purchase a monthly member for $ 2.99 / month and renew it automatically every month. [Annual Pro] 19.99 $ / year to purchase annual annual membership and automatically renew it annually. Purchase Notes: 1. The account will be automatically renewed and deducted the corresponding fee 1 day before the expiration. 2. If you need to cancel the renewal, please cancel in your personal iTunes account at least 1 day in advance. 3. After purchase, users can manage or turn off automatic renewal in personal account settings. Terms of Services : https://www.astronomyobserver.net/h5/elevation/user/en Privacy policy: https://www.astronomyobserver.net/h5/elevation/privacy/en