1.6.98:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.97:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.95:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.90:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.88:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.87:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.85:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.83:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.80:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.79:
- Bug fixing and performance tuning.
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
1.6.77:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.75:
- Fixing some star names with official IAU name. Thanks Ken Kious for the revising!
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Add Setting menu, more settings are coming.
- Fix the issue that sometimes need relaunch to take effects after make purchase.
- Enable more Messier Objects and Constellation Arts for free version.
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.73:
- Bug fixing and performance tuning.
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.71:
- Android 11 support
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.70:
- Bug fixing and performance tuning.
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.68:
- Bug fixing and performance tuning.
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.67:
- Bug fixing and performance tuning.
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.66:
- Bug fixing and performance tuning.
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Enable more Messier Objects and Constellation Arts for free version.
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.65:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10 and 64 bit.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.62:
- Add Setting menu, more settings are coming.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10 and 64 bit.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.61:
- Bug fixing.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.60:
- Bug fixing.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.59:
- Performance tuning.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.58:
- Bug fixing.
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.55:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.51:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.39:
- Fix the issue that sometimes need relaunch to take effects after make purchase.
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Show multiple guide arrows when receive notification
- Introduce Meteor Shower
- Render performance tuning (20% faster)
1.6.37:
- Add support for Android 10
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.35:
- App size optimization.
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.32:
- Add 64 bit binary.
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.29:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.28:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.26:
- Enable more Messier Objects and Constellation Arts for free version.
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.23:
- Bug fixing and performance tuning
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.23:
- Bug fixing and performance tuning
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.22:
- Bug fixing and performance tuning
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.21:
- Bug fixing and performance tuning
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.19:
- Bug fixing and performance tuning
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.18:
- Add Draconids meteor shower
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.17:
- Fix crash issue during purchase
1.6.16:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.12:
- Show multiple guide arrows when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.11:
- Small bug fixing and performance tuning
1.6.8:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.10:
- Small bug fixing and performance tuning
1.6.8:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.9:
- Small bug fixing and performance tuning
1.6.8:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.8:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.7:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.6:
- Show guide arrow when receive notification
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.5:
- Performance tuning
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==
Recent updates:
- Introduce Meteor Shower
- Fix the issue that constellation highlight not work sometime
- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus
- Render performance tuning (20% faster)
1.6.2:- Bug fixing==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Introduce Meteor Shower- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
1.6.1:- Reducing apk size- Bug fixing==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Introduce Meteor Shower- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
1.6.0:- Introduce Meteor Shower==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
1.5.32:- Small bug fixing.1.5.31:- Introduce Meteor Shower, enjoy Perseids!==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
1.5.31:- Introduce Meteor Shower, enjoy Perseids!==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
1.5.29:- Small bug fixing==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==Recent updates:- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)
==Please REMOVE metal case or magnetic cover to avoid motion sensor interference==1.5.28:- Performance improvementRecent updates:- Fix the issue that constellation highlight not work sometime- Errerta: star name "Schedar" -> "Scheat" for beta Pegasus- Render performance tuning (20% faster)- Remove permission request of access external storage!
Hey, get outdoors with your friends and enjoy star gazing! Let StarTracker guide you to explore the universe.
Just hold up & point the device to the sky and have fun! You will see any stars, constellations and deep sky objects you are watching in real time.
<< REMOVE metal case or magnetic cover to avoid interference and get accurate orientation! >>
<< Calibration steps: https://youtu.be/-Uq7AmSAjt8 >>
Features:
★ All data is offline!
★ Fits all screen sizes from 3.5 inch to 12.9 inch for any resolution!
★ Sun, Moon, Planets in Solar System, 88 Constellations and 8000+ stars visible to the naked eyes.
★ 12 Zodiac Constellations Art & some famous deep sky objects with magnificent graphics.
★ Location auto set by GPS, or set manually.
★ Auto hide all menus and enter AR track mode when you point your device to the sky.
★ Smooth motion flow and quick response which is realized by cutting edge signal processing technique.
★ Superb high quality graphic display by enabling the retina display of the device and the full screen anti-aliasing technology employment.
Pro version (2.99 to unlock):
★ No ads & full main menu.
★ Full 88 Constellations & 100+ deep sky objects with magnificent graphics.
★ Search and guide you to stars, constellations, planets and deep sky objects.
★ 3D compass in AR mode, indicates position of objects you searched.
★ Time Machine menu and location menu to let you explore more on time and location dimension.
★ Night mode switch, protecting eye when doing star gazing outdoor.