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Last updated on: 2026-06-02
Android Apps > Education > DSO Planner (Astronomy)
DSO Planner (Astronomy) icon

DSO Planner (Astronomy)

3.8.7
Leonid Vasiliev
4.33
84 reviews
1,000+
Downloads
Free

Astronomical observation planning tool with excellent star charting capabilities

Not recently updated — last update was on 2023-10-17. This app may no longer be actively maintained.
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About DSO Planner (Astronomy)

DSO Planner (Astronomy) is an education app developed by Leonid Vasiliev.

Download Statistics

DSO Planner (Astronomy) has been downloaded 3.4 thousand times. In the last 30 days, the app was downloaded 30 times.

User Ratings

DSO Planner (Astronomy) is rated 4.33 out of 5 stars. The rating is based on 84 ratings.

App Information

DSO Planner (Astronomy) is FREE to download. The APK download size is 1.80 GB. The latest version available is 3.8.7. The last update was on October 17, 2023.

Technical Requirements

DSO Planner (Astronomy) requires Android 5.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2014.

Description
DSO Planner is an astronomy observation planning tool with excellent star charting capabilities made by active and experienced amateur observers with a passion for visual observations. It has large integrated deep sky objects databases and provides an opportunity to create any number of user own object databases. DSO Planner boasts the largest star catalog among all Android astronomy applications (USNO UCAC4, 113 mn stars). The application excels at creating observation plans on the fly, has powerful note taking capabilities, PushTo and GoTo support and night (red) mode.

The app code is opensource (https://github.com/dsoastro/dsoplanner).

Before installation please make sure that you have at least 2 GB of free space on your internal SD card to download application databases! (Note: due to Google Play rules this data cannot be moved to your external SD card - you must have 2 GB free on your internal SD card!)

+ Star catalogs. USNO UCAC4 (full star coverage to 16m, 113 mn stars), Tycho-2 (2.5 mn stars), Yale bright star catalog (9 000 stars)

+ Deep sky catalogs. NgcIc (12 000 objects including Messier, Caldwell and Herschel 400 objects), SAC (Saguaro Astronomy Club database, 10 000 objects), UGC (13 000 objects), Lynds dark and bright nebula (3 000 objects), Barnard dark nebula (350 objects), SH2 (300 objects), PK (1 500 planetary nebula), Abell cluster of galaxies (2 700 objects), Hickson Compact Group (100 objects), PGC (1 600 000 galaxies)

+ Double Star catalog. Brightest Double Stars (2 300 stars), Washington Double Star Catalog (120 000 stars), double stars from Yale catalog. Info Panel with PA and separation for each component.

+ Comet support. Orbital elements of around 700 observable comets could be automatically updated via internet

+ Minor planet support. Database of 10 000 brightest minor planets

+ Famous Steve Gottlieb Notes attached to NGCIC objects

+ Custom catalogs. Unlimited capability to create fully searchable own catalogs

+ Cross-match names database. Search objects by less common names

+ DSS imagery support. Download DSS images of any sky portion into offline cache and overlay it on the star chart

+ Offline images. Integrated set of images of most NgcIc objects, opportunity to add own images when creating custom catalogs

+ Nebula contours. Contours of famous nebulae

+ Object contours. Ellipse in real dimension and orientation

+ Night mode. Fully red screen with red keyboard and menus

+ PushTo for dobsonian mounts with setting circles. Level your dobsonian mount and perform one star alignment. The app will automatically recalculate az/alt numbers to easily hunt the object

+ GoTo for Meade and Celestron controllers with bluetooth dongle

+ Unique visibility tool. Only objects that are visible with selected equipment in the current sky conditions could be shown on the Star Chart (for objects from NGCIC/SAC/PGC catalogs)

+ Planning tool. Filter any objects database by observer location, sky condition, astronomical equipment, time range of observation and object features (type, dimension, magnitude, minimal altitude, visibility and other fields of own custom catalogs). Remove duplicate objects when searching in intersecting databases. Create up to 4 observation lists. Easily track observed and remaining to be observed objects with note taking tool

+ Import tool. Import observation lists in Sky Safari and Sky Tools format. Use pre-compiled Night Sky Observer Guide observation lists.

+ Note taking. Take text and/or audio notes

+ Observing places. GPS, manual coordinates, custom lists. Database with 24 000 cities worldwide

+ Equipment. Keep track of all your telescopes and eyepieces. Use them for object visibility calculation and star charting. Use 500 popular eyepieces database

+ Twilight calculator. Calculation of the full darkness for a current night and for a month ahead.

+ 2 visual themes (bright and dark)

+ Powerful share/export/import capabilities (of databases, observation lists, etc)

Recent changes:
Minor fixes and improvements.
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More data about DSO Planner (Astronomy)

Price Free to download
Total downloads 3.4 thousand
Recent downloads 30
Rating 4.33 based on 84 ratings
Ranking Not ranked
Version 3.8.7
APK size 1.80 GB
Number of libraries 4
Designed for Android 5.0+
Suitable for Everyone
Ads NO ads

App Performance Report

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DSO Planner (Astronomy) compared with similar apps

Common keywords of similar apps

Catalogs Tool Database Databases Catalog Lists Capabilities Note Support Ngcic Nebula Double Custom Images Dso Planner Planning Charting Create Mn Taking Red Sd Card Bright Dark Minor Contours Visibility Equipment Import Excellent Visual Integrated Opportunity Usno Ucac4 Application Creating Powerful Objects Star Observation Sky Stars Object Astronomy Night Astronomical Deep

Keywords missing from this app

App Constellations Planets Map View Time Stargazing Celestial Satellites Real Explore Events Features Observing Data Solar Walk Tools Telescope System Space Guide Comets Meteor Skysafari Easy Mode Pro Control Learn Levels Find Recent Showers Weather Finder Stellarium Gazer Knowledge Experience

Google Play Rating history and histogram

44
24
0
4
0

Downloads over time

DSO Planner (Astronomy) has been downloaded 3.4 thousand times. Over the past 30 days, it has been downloaded 30 times.

Changelog of DSO Planner (Astronomy)

  • Apr 1, 2024Installs1,000+ installs
  • Jan 18, 2024Price DropNew price: Free ($24.99)
  • Nov 5, 2023Price IncreaseNew price: $24.99 ($19.99)
  • Oct 17, 2023UpdateVersion 3.8.7
  • Sep 1, 2023UpdateVersion 3.8.5
  • Jan 11, 2022CategoryMoved from Tools to Education
  • Jan 1, 2022UpdateVersion 3.8.2
  • Jan 16, 2021Price IncreaseNew price: $19.99 ($19.97)
  • Dec 27, 2020UpdateVersion 3.7.4
  • Sep 18, 2020UpdateVersion 3.7.2
  • Jul 17, 2020Price IncreaseNew price: $19.97 ($19.95)
  • Jun 21, 2020UpdateVersion 3.7.0
  • May 17, 2020Price DropNew price: $19.95 ($19.97)
  • Apr 7, 2020Installs500+ installs
  • Oct 22, 2018UpdateVersion 3.6.1
  • Jul 19, 2018UpdateVersion 3.6.0
  • Mar 14, 2017UpdateVersion 3.4.0
  • Jan 15, 2017UpdateVersion 3.3.0
  • Nov 15, 2016UpdateVersion 3.2.2
  • Oct 8, 2016UpdateVersion 3.2.1
  • Aug 14, 2016UpdateVersion 3.2.0
  • Dec 11, 2015Price IncreaseNew price: $19.97 ($18.06)
  • Dec 3, 2015UpdateVersion 3.1.0
  • Nov 5, 2015Installs100+ installs
  • Nov 5, 2015UpdateVersion 3.0.0
  • Jun 7, 2015UpdateVersion 2.0.0
  • Apr 8, 2015Installs50+ installs
  • Feb 7, 2015Price IncreaseNew price: $18.06 ($9.70)
  • Feb 7, 2015UpdateVersion 1.2.2
  • Oct 29, 2014Installs10+ installs
  • Oct 29, 2014UpdateVersion 1.2.1
  • Sep 29, 2014UpdateVersion 1.1.0
  • Sep 15, 2014Installs5+ installs
  • Aug 25, 2014Installs1+ installs
  • Aug 20, 2014New AppVersion 1.0.0 in TOOLS for $9.70
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Developer information for Leonid Vasiliev

Leonid Vasiliev

dsoplanner@gmail.com

Website

N/A

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Comments on DSO Planner (Astronomy) for Android

★★★★★ Andy Harris · Feb 26, 2016
Excellent app, very complete for my requirements and then some. Endless information in each layer with superb offline capabilities. The DSS photos download for each DSO makes for a great live viewing experience and after observations to browse through its endless content is very satisfying and gives you the feeling that you are still observing from the comfort of your armchair. Great piece of work guys. Thanks very much. 😆
★★★★☆ Steffen B. Petersen · Jul 2, 2018
Very nice App. But missing many Messier objects. Eg M101 is not included which is surprising
★★★★★ Andrei Osmolovski · Sep 20, 2021
Great! Really appreciate your job! Best planner, with simple "for human" interface, and lots of catalogs. Hope in future Wi-Fi connection, for Synscan on my DOB will be available;) Thank you very much!
★★★★☆ Marvin W. Huddleston FRAS · May 18, 2019
This is more a question than review. After purchase, I still get the 'Sorry this function is only available in paid editions.' How do I fix this? One thing I don't like is the notes function. When selecting a Messier object it lists them with their NGC designation. Needs to list both.
★★☆☆☆ SciRx · Oct 12, 2025
Cannot set loc of observer, not in settings... this is a problem of satellite service that uses major station covering large regions. We live in a different state from Chicago, about 400 miles. Makes the charts somewhat unusable

Google Play Rankings for DSO Planner (Astronomy)

This app is not ranked

Technologies used by DSO Planner (Astronomy)

DSO Planner (Astronomy) is requesting 15 permissions and is using 6 libraries.

Permissions

Your location
approximate (network-based) location, precise (GPS) location
Network communication
view network connections, pair with Bluetooth devices, full network access, Google Play license check
Hardware controls
record audio, control vibration
System tools
access Bluetooth settings, disable your screen lock, prevent phone from sleeping
Extra
android.permission.ACTION_OPEN_DOCUMENT_TREE, android.permission.BLUETOOTH_CONNECT, android.permission.BLUETOOTH_SCAN, android.permission.FOREGROUND_SERVICE

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core Android Library IconAndroid Jetpack core Android Architecture Components Android Library IconAndroid Architecture Components Android Jetpack VersionedParcelable Android Library IconAndroid Jetpack VersionedParcelable Android Jetpack Media Android Library IconAndroid Jetpack Media
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