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Hello, on this
page you find my latest Android apps for download.
These programs are available in the Android
PlayStore, but you can also download them from this website
and install them manually.
In this case you need an Apk_Installer
(see QR-Code in the right) or the Astro File Explorer. On your
phone you have to allow installation of applications from
non-PlayStore sources. Activate in your phone's menu in
"Settings", "Applications" the check box "unknown sources",
otherwise you will not be able to install my applications!
Some of my apps will save certain files in a new created directory "sdcard/.com.strickling" (EclipseDroid, PlanetDroid, GeoSat4Android, AstroFoto Calculator, CameraTimer)
Russian Page
Astronomy ephemeris app for calculating high
precision ephemeris and positions of Sun, Moon and the Planets for
amateur astronomers and planetary observers. Finds rise,
culmination and set times, begin of seasons, lunar phases and
planetary aspects. Supports GPS localization.
New: Since
version 3.0 PlanetDroid comes with a visibility diagram. You see
the elevation above the horizon of your selected body (white line)
of the current night and the elevation of the sun (dark yellow
line), as well as the twilight times. The horizontal black line
ist the horizon, the vertical red line your selected time.
Since version 3.3 it is possible to save locations offline. The
file containing the locations is
sdcard/.com.strickling/location.txt. It can be edited with any
test editor. To start the editor, simply click menu in the
location selection form.
Since version 3.4.0 you can jump to a date listed in the season
time table, lunar phase table or aspect table directly on touching
a date.
Planetdroid calculates the following items
(select or deselect different items in the menu). Here you find
links to Wikipedia-articles for the exact definition of the terms:
- time of rise, set and culmination (when an object will reach its
highest point above the horizon),
- azimuth of
rise and set (where the object will rise or set)
- equatorial
right
ascension and declination, which is the position in the sky,
for comparing positions with a star map (reference system is the
celestial equator).
- ecliptical
coordinates and distance in astronomic units (reference
system is the Earth's orbitals plane)
- azimut and
elevation (reference system is the local horizon of the
observer)
- equation
of time, apparent solar time (a
sundial will show this time), hour angle,
elongation (angular distance of a planet from the sun) and sidereal time
(the right ascension RA, wich is now culminating)
- apparent diameter (how large will the object appear in the
telescope), apparent
magnitude (how bright will the object appear),
- for the Sun and the planets: physical ephemeris, indicating on
which part of the planet you are looking, eg. for comparing or
creating maps from your drawings or photos:
central meridian (CM), latitude of the earth (B0,
whether you are looking more on the equator or on the poles), position
angle of the axis (P0)
CM and B0 are giving the planetographic coordinates of the
center of the planet disc as seen from earth.
- libration
for the moon (which part of the moon is facing to the observer,
corresponding to CM and B0 for planets)
- Civil, nautical
and astronomic twilight times (the Sun is 6°, 12° and 18°
below the horizon)
- begin of the seasons, lunar phases, and lunar age (days
since new moon)
- times of opposition
(usually
best visibility period for the planets), conjunction
(planet behind the Sun, usually invisible) and greatest elongation
for planets
The data output is similar to my AstroWin.
Thanks to Mark Huss for his AstroLib containing the VSOP-routines and to the translators!
Languages: German, English, Serbian, Italian, Russian, French. For the Serbian version see the Serbian AM page, for Russian see Russian Page
.
If you like to translate PlanetDroid into other languages, don't
hesitate and send an email to me ( dr.strickling <at> gmx.de
), it is quite easy!
Download PlanetDroid.apk.
Also available in the Android
PlayStore.
System requirements: Android 1.6 or higher
SourceCodes: PlanetDroid, AstroUtils, and my modified AstroLib-1.1.5 based on version 1.1.4 by Mark Huss
Required Permissions:
Astronomic app,
computing local circumstances for solar eclipses. Displays the
contact times and custom defined events, can make acoustic
announcements and can take snapshots at user defined times, using
the phone's camera. GPS and network localization supported.
Release your digital camera or other electrically
triggerable devices with your phone! Make your phone a universal
remote control for your camera.
You can use the infrared blaster of your device, an USB cable or
an optical cable to release your cameras.
You can use your phone as an infrared remote
control. KitKat (Android 4.4) and a built-in infrared transmitter
(IR-Blaster) is required for infrared usage.
Tested with Canon DSLRs, Nikon and Sony Alpha, implemented code
for Pentax DSLR should work as well.
You can configure more cameras by editing the .com.strickling/ircommands.csv
file, which contains all parameters for the infrared
transmission codes. the file looks similar like this:
//Name;Frequency;RAW command sequence
Canon;32897;480 7200 480 7200
Nikon;38400;2000 27830 420 1580 420 3580 420 63200 2000
27830 420 1580 420 3580 420
The first line is a description, introduced by
the slashes, the other lines consist of the Camera name, the
infrared pulse transmit frequency and the infrared command
sequence.
Download sample ircommands.csv
file with more codes for Canon and Sony.
Click
here to obtain commands for the Sony Alpha 7 camera (and
perhaps other Sonys) and save it as .com.strickling/ircommands.csv
on your sd card. Thanks to Brad Templeton!
To obtain more sequences have a look at IRPlus, an infrared
remote control Android app. There you will find more controls, you
can export the raw sequences and paste them into the
ircommands.csv file used by CameraTimer and EclipseDroid in the actions script.
This small app can use the phone's built-in flash
LED or USB cable to release external electronic devices. It
requires phones, which provide a torch mode for their camera
flash. For the light sensor I use the cheap photo transistor
L-932P3C (eg. Conrad-article # 154500, price 0.42 Euro), which can
trigger the most digital cameras without further circuits. I
tested it with my Canon EOS 450D and my old analog Pentax Z1.
Please take care, not to switch on the Camera LED for too long
times, as this will reduce its durability!
 |
A
smartphone with a camera flashlight. Left: Flash released, Right: Cable adapter containing the photo transistor over the LED. Below: Circuit sketch  |
 |
 |
Language: English
New: CameraTimer
is now supporting USB devices (Android 3.1 required)
For shots with the internal camera the parameters
are loaded one by one with the Camera.Parameters.Set
method into the camera. Read the android
documentation for further details. A sample file of the
camera settings on my desire can be downloaded here (from
my HTC Desire®).
Example: picture-size=640x480;iso=100;flash-mode=off;focus-mode=infinity;
Since version 0.9.10 automatic geotagging is supported, if GPS or network localization is active.
System requirements:
Android 2.x, for using USB support Android 3.1 or higher, a device
supporting USB host mode and an adapter cable.
KitKat (Android 4.4) and a built-in Infrared transmitter
(IR-Blaster) is required for infrared usage.
Download small test app for checking USB capabilities of your device: USBCamera.apk
A small app for astro photographers for
calculation of image filed sizes for certain combinations of
camera and lens. You can also calculate the maximal exposure time
for shots without guiding and calculate the length of star trails.
Note: The results are calculated for
non-distorting lenses at the image center. Wide angle lenses near
the margin or fisheye lenses have different values not computed by
this app.
It has a custom editable camera list. After
installation and first execution of this app the list is saved on
your SD card under sdcard/.com.strickling/astrocameras.txt. It can
be edited with any text editor. On the next start of the app the
customized list will be loaded.
Language: English and German
Installation from the Android PlayStore direct download from my website: AstrofotoCalc.apk
This app helps you to align your parallactic
telescope mount toward the celestial pole, using the numeric
Scheiner method given by Dr.
M. Knülle, 2000.
Make a quick measurement, calculate the correction value and
adjust your mount sufficient for long-time photographic exposures!
For the alignment measure the drift of a star
with a scaled eyepiece in arbitrary units during a certain time
and correct your mount according to the calculation.
Start with the meridian adjustment, observing a star near the
meridian in the south with a minimal elevation of about 45 deg.
For obtaining the declination, place your phone flat on the
telescope tube, pointing its top side to the star. Then align the
polar elevation, observing a rising star in the east or a setting
star in the west. For correction, select a star near the meridian
in the south.
For more info see leq.one-arcsec.org
or my website
(German language).
Language: English
Installation from the Android PlayStore or direct download from my website Scheiner.apk
Small app for
calculation the apparent position of geostationary satellites. It
assumes circular orbit with inclination 0°. For visual observers
and photographers.
Language: English
A small app
for calculating the standard atmosphere. Get temperature,
pressure, density, vapor pressure etc, depending on altitude and
speed.
The precision is good for educational use, please do not use for aviation! Language: English
Please deinstall the old version 1.0 (it has no menu) before installing a newer one (with menu). Otherwise the app will be twice on your device.
Download Atmosphere.apk
or the Android
PlayStore.
A small app for
the recording of visual meteor observations. It has large red
buttons not spoiling the dark sky adaptation of your eyes. The
data are stored on the SD card (Path: sdcard\Perseids.log ). You
can analyze the log with a spreadsheet software, e.g. Excel or
Open Office.
New: Selection of shower possible and input comments, full screen mode.
Please deinstall the old version 1.0 (it has no menu) before installing a newer one (with menu). Otherwise the app will be twice on your device.
Download Perseids.apk here or from the android PlayStore.
A small GPS based speedometer app, displaying
speed, GPS-time, coordinates, altitude, bearing with a compass,
and address if data connection available.
Selectable speed out format: m/s, km/h, mph, kt.
The background color changes at common speed limits:
50 km/h, 70 km/h, 80 km/h, 100 km/h, 120 km/h.
This table can be customized, edit file
/sdcard/.com.strickling/GPSTacho.txt.
New: Trip statistics with maximal speed,
duration, odometer, average total speed, average speed when
moving, moving time, ascend and descend sum.
New: Get averaged coordinates to reduce GPS error and get high
precision coordinates, eg. for placing geocaches.
You can save location as GPX file on your sd-card.
Download GPS-Tacho.apk here or from the android PlayStore.
This app is listed as a cool app by Telefon.de
:-))
A simple
test App for testing and developing USB PTP code for Android.
System requirements: Android 3.1 or higher, device with USB hoste
mode support, USB cable.
A discussion forum is located at forum.xda-developers.com.
My projects EclipseDroid
and CameraTimer share
this code, too.
Code tested for Canon an Nikon:
Canon Cameras: 7D, 40D, 60D, 350D, 450D, 550D, 600D, 650D,
1000D, 1100D (not working on 6D, 5D MKIII and IV, 300D, 400D,
700D, 750D, 7D Mk II and one X?)
Nikon Cameras: D200, D3000, D3200, D50, D7000 (after firmware
update), (not recognizing Nikon D70, D750)
Downlod source code of this app and the library PtpLib (Zipped files) or download at github.com/coderash/USBCamera.
Download USBCameraTest.apk
here or from the Android
PlayStore.
© Dr. Wolfgang Strickling, Drususstr. 15, 45721 Haltern am See / Germany. Tel: +0049 / 23 64 / 16 76 91
Back to Wolfgangs Homepage (in German)
Other interesting astronomy apps:
last Update 2019-10-08
The original URL of this page is http://www.strickling.net/android_en.htm
