Note: The only in-app purchases available are tips. All functionality is included.
Polar Scope Align will calculate the position of Polaris or σ Octantis in your Polar Scope reticle for your location (using your phone's GPS or entering a location), allowing a quick and accurate polar alignment. It is one of the few programs that are accurate in lower latitudes by correcting for atmospheric refraction (so expect results to agree only with precise software and not most simplistic "polar align" apps - see the "Accuracy" section in the website for more details). It will even allow you to measure and correct a centering error of the reticle - very useful for polar scopes that are not easy to adjust (e.g. iOptron ZEQ25). In the settings you can also select from a collection of reticles, one that matches your own - currently iOptron, Astro-Physics, Takahashi, Orion, Skywatcher, Celestron, Meade, Vixen, Bresser, Astrotrac, Losmandy, Kenko, Explore Scientific, Avalon Instruments, Tuthill, Telrad reticles are available. Feel free to contact the developer with any questions, requests or any problems with the app. If you like Polar Scope Align, please consider leaving a review on the app store.
The Pro Watch version has all the features of Polar Scope Align Pro, with the addition of an Apple Watch app that offers:
-Graphic & Text display of polar alignment.
-Moon/Sun rise/set/twilight end times.
App feature list:
-Accurate calculation of Polaris or Sigma Oct for any date and location, including effect of atmospheric refraction (and stellar aberration, nutation).
-Use device time/date and GPS location, or manually enter your own.
-Location manager with favorite locations, list of recent locations, online search and offline world database (cities/towns of at least 1000 population).
-Supports a multitude of polar scopes: iOptron, Astro-Physics RAPAS, various versions of Takahashi EM-10/11/200/400/500, NJP, PM-1, P2-Z, the latest Orion / Skywatcher, the Classic Skywatcher / Orion / Celestron / Meade / Bresser, the Telrad, a couple for Astrotrac / Losmandy / Kenko / Avalon, the Tuthill Precision Polar Finder, the Explore Scientific 8x50 PolarFinder, the Meade 9x60 Polar Viewfinder and the Vixen Polaris and SX/SXD/SXP/AXD/GP/GP-DX/Polarie Polar Axis Scopes.
-Full app in red-color night mode - tools switchable to non night mode view.
-Moon phase & lunar Calendar with solar/lunar rise/set and twilight times.
-Wizard to calculate your reticle centering offset and correct or compensate for it.
-Zoomable reticle view.
-Alt-az alignment error display for mounts that calculate it after star alignment (e.g. iOptron iEQ45, CEM60).
-Polar alignment when your scope is not in zero position (for mounts like iOptron ZEQ/CEM on which you can always access the polar scope).
-Remember zero position on Celestron / Skywatcher / Orion etc reticles.
-iOptron Named Star list.
-Approximate daytime / no polarscope polar alignment tool. Great for solar imaging (including eclipses).
-Bubble level (using either gyro or accelerometer) and Compass heading, as well as magnetic declination reading.
-GPS accuracy & elevation data.
-Deep Space Object Database with 13000+ objects from several catalogs (Messier, Caldwell, NGC, IC, Herschell 400, Sharpless 2). The database is searchable and fully configurable with filters, various sorting methods etc.
-Over 20 calculators useful for observing and astrophotography, from eyepiece magnification and field of view, to imaging resolution and reducers.
-World astro-weather report based on 7Timer! data.
-Access to the latest water vapor satellite images.
-List of visible ISS passes and Iridium flares.
-iOptron, NexStar and Meade LX200 Star Lists.
-Supports iPhone, iPad and Apple Watch.
From version 3.5 an app upgrade will anonymously share the iOS version, reticle and tools used, so that I can focus development appropriately.
Why not help Polar Scope Align by leaving a rating or review after trying the new version. There are no popups in the app asking you (annoying!), which unfortunately means there are not many reviews. What's new:
-iPhone X full screen support.
-Bottom bars more consistent.
-Updated instructions (mainly for Astro-Physics RAPAS).
-Fixed performance issue after closing bubble lever or day alignment.
Ratings and Reviews
Wonderful app. Far better than I expected. Well worth the four bucks!
Very handy Swiss Army knife for astronomy.
I use this all the time for polar alignment and scope setup. Love the new features in the pro version.
Great app for Polar Alignment
This app make polar alignment of my goto mount much easier - it shows exactly where polaris should be in your finderscope. Displaying the view on the Apple Watch is a nice bonus.
With Family Sharing set up, up to six family members can use this app.