The Polar-Aligner is a great tool to align your equatorialtelescope mount

AstroCalendar - Calendar of astronomical and stargazing events

Astronomical observation planning tool with excellent star chartingcapabilities

Calculation of parameters and characteristics of telescopesusingdifferent eyepieces and visualization. Settings: -language(Russian, English, Hungarian, Spanish, German, French,Romanian,Croatian, Italian, Sinhala, Norwegian, Persian, Polish,Japanese,Portuguese, Korean, Catalan, Dutch, Arabic, Greek,Malay,Luxembourgish, Hindi, Indonesian , Ukrainian, Hebrew,Sardinian,Czech, Swedish, Finnish, Chinese, Bengali, Tamil,Slovenian,Turkish, Bosnian, Thai, Bulgarian, Vietnamese) - scale -text fontsize - input by the slider - comparison of telescopes -bookmarks -Moon phases - help - swipe Telescope: - List oftelescopes -Diameter - Focal length - Focuser Eyepiece: - Eyepiecelist - Focallength - Field of view - Barlow lens Camera: - list ofcameras -pixel size - image size - matrix size - BinningCalculations: -Magnification - Stellar magnitude - Field of view -Maximum fieldof view - f-number - Diameter of exit pupil - Angularresolution -Size of craters on Moon - 2D, 1.4D, 1D, 0.7D, 0.5D -Sun - ISSPlanets: - Mercury - Venus - Earth - Mars - Jupiter -Saturn -Uranus - Neptune - Pluto Asteroids: - Ceres - Pallas - Juno- Vesta- Ida - Gaspra Satellite: - Moon - Titan - Io - Europa -Ganymede -Callisto - Titania - Ray Messier: M1, M8, M13, M16, M17,M20, M27,M31, M33, M42, M45, M51, M57, M58, M63, M64, M74, M78,M81, M82,M83, M88, M97, M99, M100, M101, M104, M108 NGC: 891, 2359,2392,2440, 4565, 4631, 5189, 6302, 6543, 6960, 6979, 7000, 7662IC:1805, 1848, 2118

DSO Planner Free is an astronomy observation planning toolwithexcellent star charting capabilities made by active andexperiencedamateur observers with a passion for visualobservations. FreeEdition comes equipped with Yale bright starcatalog (9 000 starsto 6.5m) and 220 deep sky objects (Messier andCaldwell catalogscontaining the brightest galaxies, nebula,globular clusters, openclusters and planetary nebula). Considerother Editions for morestars / objects. Application features: +Planning tool. Filter anyobjects database by observer location, skycondition, astronomicalequipment, time range of observation andobject features (type,dimension, magnitude, minimal altitude,visibility and other fieldsof own custom catalogs). Removeduplicate objects when searching inintersecting databases. Createup to 4 observation lists. Easilytrack observed and remaining to beobserved objects with notetaking tool + Double Star catalog. 50brightest double stars fromYale catalog. Info Panel with PA andseparation for each component.+ Unique visibility tool. Onlyobjects that are visible withselected equipment in the current skyconditions could be shown onthe Star Chart + Cross-match namesdatabase. Search objects by lesscommon names + Famous SteveGottlieb Notes attached to NGCICobjects + Offline images.Integrated set of deep sky object images+ DSS imagery support.Download DSS (Digitized Sky Survey) imagesof any sky portion intooffline cache and overlay it on the starchart + PushTo fordobsonian mounts with setting circles. Levelyour dobsonian mountand perform one star alignment. The programwill automaticallyrecalculate az/alt numbers to easily hunt theobject + Nebulacontours. Contours of famous nebulae + Objectcontours. Ellipse inreal dimension and orientation on the skychart + Bright SolarSystem objects. Sun, Moon, Mercury, Venus,Mars, Jupiter, Saturnshown on the sky chart + Night mode. Redkeyboard and menus + Notetaking. Take text and/or audio notes +Observing places. GPS, manualcoordinates, custom lists. Databasewith 24 000 cities worldwide +Equipment. Keep track of all yourtelescopes and eyepieces. Use themfor object visibilitycalculation and star charting + Twilightcalculator. Sun, Moon rise/ transit / set. Moon Phase. Civil,Nautical, Astronomicaltwilights. + 2 visual themes (bright anddark) + Powerfulshare/export/import capabilities (of databases,observation lists,notes) Disclaimer

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