Tenmon help

Tenmon is primary for viewing astro photos and images. It can open following formats

FITS 8, 16 bit integer and 32 bit float
XISF 8, 16 bit integer and 32 bit float
JPEG and PNG images

Main windows

Main window show loaded images. On the left there isImage info which display detailed about actual image. File system display all images from current dir. On top is main menu and under it Stretch panel. All panels can be closed and moved around. Closed panel can be opened again through menu Docks.

Opening and saving images

To open image select menu File->Open. After file selection this file is displayed in main windows Panel File system is populated with rest of images in current directory.

Currently displayed image can be saved into different format with File->Save as. There is selection for of formats JPEG, PNG FITS and XISF. In case of JPEG or PNG first stretch function is applied. FITS and XISF are converted without format stretch.

View

Menu View affect size and scale displayed images. Zoom In/Zoom Out magnify and shrink image. For this mouse wheel can be also used. Best fit display image so it is shown across whole window. 100% display image in 1:1 scale. Fullscreen show main window on whole screen. Thumbnails show small thumnails for all images from current dir.

Stretch toolbar

This panel change how images are displayed. First there is slider scale with three points settings.

black point - all pixels with value lower that set will be black
mid point - all pixels with this value will be shown with 50% intensity
white point - all pixels with value above this will be white

Next is button that set black and mid point to optimal place so image can be shown with optimal brightness. Second button reset three values for black, mid and white point to default. Invert colors display image as negative. Super pixel CFA average two by two pixels into one which is suitable for images from colour camera. Last button toggle setting optimal stretch for each image individually on load.

Marking imagesv

Images can be marked in menu Select. List of marked images can be shown with Select->Show marked. This dialog serve to clear marks from images. Marked images have * character in main window title bar. Marked images can be copied or moved to selected directory with File->Copy/Move marked files. After copy or move list of marked files is cleard. Program will remember list of marked files after quit.

Database of FITS/XISF files

Program can search direcory and index meta data from FIST and XISF images into internal database. This database can be then searched. To index directory with FIST/XISF images select it through File->Index directoryr. Selected directory is then searched and meta data from FITS and XISF images are stored into database. To refresh database you can run File->Reindex. This will update any changed meta data and remove any record about deleted files. To index new files run index directory again.

To show database select Docks->FITS/XISF database. Database is shown as table where each column is different property. AT bottom of database panel is button to select which propertis are displayed. Next are three combo boxes and text inputs. Combo box select which property to search and text input what value to search.

In this example it search for files that have "Bias" in their file name and property OBJECT is M_42 and DATE begin with 2022. Character % (percent sing) is wildcard represent zero, one or many characters. Character _ (underscore) is second wildcard character that represent single character. Without wildcard character exact string is searched.