Telescope calculator
Contains ads
4.2star
1.23K reviews
100K+
Downloads
Rated for 3+
info
About this app
Calculation of parameters and characteristics of telescopes using different 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 font size
- input by the slider
- comparison of telescopes
- bookmarks
- Moon phases
- help
- swipe
Telescope:
- List of telescopes
- Diameter
- Focal length
- Focuser
Eyepiece:
- Eyepiece list
- Focal length
- Field of view
- Barlow lens
Camera:
- list of cameras
- pixel size
- image size
- matrix size
- Binning
Calculations:
- Magnification
- Stellar magnitude
- Field of view
- Maximum field of view
- f-number
- Diameter of exit pupil
- Angular resolution
- Size of craters on Moon
- 2D, 1.4D, 1D, 0.7D, 0.5D
- Sun
- ISS
Planets:
- 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, 7662
IC:
1805, 1848, 2118
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 font size
- input by the slider
- comparison of telescopes
- bookmarks
- Moon phases
- help
- swipe
Telescope:
- List of telescopes
- Diameter
- Focal length
- Focuser
Eyepiece:
- Eyepiece list
- Focal length
- Field of view
- Barlow lens
Camera:
- list of cameras
- pixel size
- image size
- matrix size
- Binning
Calculations:
- Magnification
- Stellar magnitude
- Field of view
- Maximum field of view
- f-number
- Diameter of exit pupil
- Angular resolution
- Size of craters on Moon
- 2D, 1.4D, 1D, 0.7D, 0.5D
- Sun
- ISS
Planets:
- 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, 7662
IC:
1805, 1848, 2118
Updated on
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Ratings and reviews
4.2
1.14K reviews
A Google user
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October 15, 2018
App seems pretty useful and has lots of good data. I only had two issues. First, the help responses to the question marks is in Russian (?) and so no help at all explaining what the values are. Second, quite often switching values or screens results in the view through the eyepiece shrinking in size. The whole eyepiece shrinks, not just what is shown as being the view. Example, moon is almost filling the eyepiece, switch to another view or change a value, switch back to main screen and the eyepiece circle is now 1/4 size and the moon still almost fills it.
77 people found this review helpful
א.מ.
October 15, 2018
will google translation. settings - scale
Skyrunner84
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October 29, 2023
I like this app but I think it could be a little cleaner. I understand that you can have the bookmarks on the sides but only in equal number (telescopes to eyepieces). I wish you could set up telescopes (with names) independently. As it works now it feels a little clunky and can be easy to missmatch telescopes and eyepieces. Especially since I have only 3 telescopes but 12 eyepiece/Barlow combinations.
3 people found this review helpful
א.מ.
October 29, 2023
There are quick bookmarks on the right and left of the screen. The number of bookmarks can be increased in the settings (default 5)
Peter Yeats
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December 25, 2021
Very useful in planning viewing sessions, eyepieces and photography by providing excellent data on what to expect. As a beginner, I refer to it a lot but it must be equally useful for experienced astronomers, too.
26 people found this review helpful
What's new
v4.0.0
account for storing settings
v3.6.0
increased slider input
v3.5.1
+ NGC891, NGC4565, NGC4631, NGC6960, NGC6979, NGC7662
v3.5.0
- changed settings, choice of object and language
- full-screen advertising is twice as rare
+ M97, NGC2359, NGC2392, NGC2440, NGC5189, NGC6302, NGC6543, NGC7000, IC1805, IC1848, IC2118
v3.4.0
settings
- hide 2D-D/6
- coordinates of the planets
- observation coordinates
+ Asteroids
+/- Three in a row selection
account for storing settings
v3.6.0
increased slider input
v3.5.1
+ NGC891, NGC4565, NGC4631, NGC6960, NGC6979, NGC7662
v3.5.0
- changed settings, choice of object and language
- full-screen advertising is twice as rare
+ M97, NGC2359, NGC2392, NGC2440, NGC5189, NGC6302, NGC6543, NGC7000, IC1805, IC1848, IC2118
v3.4.0
settings
- hide 2D-D/6
- coordinates of the planets
- observation coordinates
+ Asteroids
+/- Three in a row selection
