Astrospheric vs Caelo

Astrospheric provides advanced weather tools for professional astronomers and astrophotographers, and supports hundreds of astronomical societies with tools that help members stay connected. Are you using what the pros use? Features • 84 hour, hour-by-hour forecast • Free notification reminders for major astronomical events, customized for your location • Ensemble cloud forecast lets you quickly compare the major forecast models with hourly updates (Astrospheric Pro) • Extended cloud forecast • Kp index for Aurora viewing (and alerts with Pro) • International Space Station (ISS) flyover paths and times • Astrospheric is the only astronomy service that integrates the smoke forecast into the transparency report • Sky data: cloud, sky transparency, seeing • Ground data: wind, temperature, and humidity • Precise rise and set times for both the sun and moon • Get weather alerts when conditions meeting your requirements are met (Astrospheric Pro) • Details Solar and Lunar eclipse data Astronomical Societies • Stay connected with chat, image sharing, and event planning with all of your members. • Qualifying astronomical societies can get Pro features for all of their members Site Mode • Information necessary to quickly set up your GOTO tracking mount • Available even if you don’t have a network connection Astrospheric Professional is now available to enable Weather Alerts, Ensemble cloud forecast, and more! • Astrospheric Professional is billed monthly or yearly and will auto-renew unless turned off at least 24-hours before the end of the current subscription period. The renewal cost will be the same as the initial sign-up cost of the subscription. Any changes in cost will be communicated before renewal takes place. • Payment will be charged to iTunes Account at confirmation of purchase • Subscriptions may be managed by you and auto-renewal may be turned off by going to the your Account Settings after purchase. A link to these settings is made available within Astrospheric "My Profile" for easy access. • The terms of use and privacy policy may be found at https://www.astrospheric.com/privacypolicy.php, purchasing a subscription shows agreement to these terms. PLEASE NOTE: Weather data is not available for Hawaii due to the domain area covered by the Canadian Meteorological Center. However, satellite and light pollution map layers, as well as other features will work in Hawaii. More information on Astrospherics forecast domain can be found here: https://www.astrospheric.com/dynamiccontent/datadomain.html

Your sky's quiet lookout — honest, even when it's "not tonight." Caelo knows your sky because you mapped it: the trees, the fence line, the roof next door, whatever actually stands between you and a clear shot of the night sky. Caelo Pro puts that horizon to work everywhere it matters. Open your Observing Plan and every recommendation already accounts for your yard. Not a generic transit time off a star chart, but the real window: when a target clears your roof, and when it drops behind next door's oak tree. A flat-horizon planner can't do that. Pro plans your night, not a generic one. Pro also shows you further ahead: This Week lays out seven nights of visibility at a glance, and This Year shows the whole season a target climbs through your sky, so you can plan around months instead of guessing at them. Caelo would rather tell you "not tonight" than send you out for nothing.