How do I configure the "Best of stellar serie" function ?
If the actual number of selected images is left
in the field "max number of final images", this function then keeps images
verfying the fact that have a FWHM X/FWHM Y ratio lower than the value
entered in the "FWHMX-FWHMY max" field on the interface.
If the content of the "max number of final images"
field is lowered, and if a high value (100) is put in the "FWHMX-FWHMY
max" field then the function will return a batch containing the best images.
The function then adds the prefix best_ to the
How does the Realignment of a stellar images batch work ?
The function runs through the following steps :
1 ) A batch of images is selected using the selection tool
2 ) The first imge of the series is loaded and stars are modelled,
and then for each of the remaining images :
3 ) Images are loaded and modelled, and stars positions are registered
to the reference image
4 ) A linear regression (least squares) function is called in to calculate
the transformation function parameters and its uncertainties
5 ) If uncertainties calculated before are lower than what s specified
by the user in the Config/PreProcessing window, then the image is realigned
and saved with the rec_ prefix prepended to its name.
What is the spy file ?
TeleAuto logs every action
and function returns into a text file at \spy.log\
. This is helpful to the development team, and helps debugging quite a
What s the Geometry/Stellar realign by
morphing about ?
This funtion realigns images of the same object that were acquired using
different telescopes/cameras/focal length/sampling. It will detect all
stars in the images, register them, and then performs a polynomial morphing
on the second image, so the second image is similar to the reference. It
is then possible to blink the 2 images, for example.
Can I do color imaging using TeleAuto ?
Yes. It is possible to save
images having different color layers into one single image file, (FITS
for example). Most of the arithmetic and filtering functions are fully
compatible with this scheme. The exceptions are :
- FFT (complex multi plane images are not yet supported)
- Inter and AutoCorrelation products
Also, the preprocessing routines are not yet supporting multi layer
TeleAuto can t find my catalogs...
Catalogs have to be installed
into the \cat\ folder. The exceptions
to this are the 'big' catalogs such as Tycho, GSC, USNO. Valid catalog folder names
are NGC, PGC, RC3, WDS etc.
Moreover, TeleAuto has to
be configured acording to where the catalogs are on your system. You can
check your configuration by looking at the System/Configuration window.
Correctly installed catalogs are listed there.
The Prism Cpa v4 Image format
is not recognized ?
TeleAuto can recognize the following image formats :
All other formats are not dealt with in TeleAuto. A workaround is to save
a batch of images with prism into the FITS format, and then load them into
TeleAuto crashes when starting
You can check if the TCP/IP
stack was detected on your system. Check the spy.txt file to ascertain
I can t connect my telescope
When the telescope is not connected,
the scope pad toolbar button and the corresponding menu item are both grayed
out. TeleAuto automatically scans your system at boot time, looking for
your telescope. In case it finds one, you then can call the scope pad by
clicking on the toolbar button. If you connect your scope, or power it
up *after* TeleAuto has started, you need to select Config/Connect Telescope.
If an error occurs and the scope is still not detected, then you might
want to check cables and try again.
My images are showing too much/not enough
contrast at acquisition time.
This can be set in the System/Configuration
window, on the threshold panel. You can change the hi and lo cuts of the
What s the best method for using the image
selection tool ?
Double click on one of the image files displayed on the left, and all
files in this directory will then be selected.
How to use the automatic preprocessing
You can manually select images using the procedure desribed above. A
button can select images matching the generic image names entered in the
config, such as "dark" or "flats".
How does the stellar realign function
work ? A least squares regression algorithm is used int it.
This allows to use all available information contained in your images.
What s the use of the "Max realign error"
parameter in the automatic preprocessing function ?
During the realignment process, TeleAuto knows what the position uncertainties
are for every star that was detected on the image. This parameter is used
simply as a rejection parameter, to allow you to automatically reject images
that would impose too big an image shift.
How does TeleAuto knows the position and
flux of the stars in my image ?
Our detection function uses a wavelet extraction, and our modelling
function uses the Levenberg-Marquadt non-linear least squares algorithm.
The latter tends to avoid solutions that converge to ridiculous quantities,
which is not necessary the case of standard linear regression models.
How do I change languages ?
You can change the language using File/Change languages. If you wish
to translate TeleAuto into another language, then
you can create your own : File/Create a language, File/Edit a language,
File/Update a language. These are using the base language contained in
You can have a look at english.lng or model.lng to understand how it
works. If you do that, then please let us know !
How come my bmp's get these funky psychedelic
When you are loading a bmp file, process it and save it, the saved file
will contain the new bmp color palette will be saved along with the image
You can try to select an existing teleauto palette using the image
thresholding tool. This happens because TeleAuto considers the bmp format
as it considers the other images formats.