This window is used to display a source frame and all information related to this frame.
The dialog can be activated:
Each file is presented in a separate window.
Preview window for source frames
(1) The image and chart are displayed in the preview area. It is possible to switch between several rendering modes.
(2) You can easily jump to the previous and next frame in the table by means of the left/right arrow icons on the toolbar. The ordinal number of displayed frame and total number of frames in the text box as a fraction.
(3) You can zoom the preview in and out by means of the zoom icons on the toolbar.
(4) It is possible to change the current aperture for which the object’s brightness is displayed in the chart and the information box.
(5) The local menu bar provides following functions:
In the local menu, select View ‣ Image only to hide the objects.
When you place a cursor over the image area, the coordinates and the pixel value are displayed in the status bar.
The Quick Photometry tool is a tool which computes basic photometric properties of an object on a frame. The main goal of this tool is to provide an estimation of the FWHM value (the important input parameter of the photometry process).
Because this tool does simplified version of aperture photometry, the results are informative only and shouldn’t be used elsewhere. Also, it doesn’t require a proper calibration to be performed first.
To activate the tool, select Tools ‣ Quick photometry from the local menu. A new panel on the right side of the preview window appears.
Quick photometry tool
Using the left mouse button, click on the image (1), close to an object. The program automatically finds the nearest local maximum, so you don’t need to be accurate. The computation stars automatically and the results are displayed the the right panel (2).
The following object parameters are presented:
It is also possible to change some parameters:
The Profile tool is used to check the shape of objects. It shows a curve of pixels values along a line.
To activate the tool, select Tools ‣ Quick photometry from the local menu. A new panel on the bottom of the preview window appears.
Profile tool
Using the left mouse button, draw a line on the image (1), crossing the center of an object. The profile is drawn in the graph (2). You can adjust the graph style (3). The following parameters are displayed in the information box (4):
The Histogram tool shows a histogram of pixel values and some related statistics.
To activate the tool, select Tools ‣ Histogram from the local menu. A new panel on the bottom of the preview window appears.
Histogram tool
The histogram is shown in the left part (1) of the tool. The following parameters are displayed in the text area on its right side (2):
In the local menu, select View ‣ Chart only or Image and chart to show the objects.
When you place a cursor over an object in the image area, its coordinates and other properties are displayed in the status bar.
Objects that were not identified on the reference frame (see Matching) are rendered in a gray color.
Objects that were not measured successfully (see Photometry) are drawn in red color and not filled.
Objects that were not measured and not matched are draw in gray color and not filled.
The brightness for each object is rendered using the selected aperture.
The Object inspector tool is a tool which displays that the program registers about an object on a frame. The main purpose of this tool is for testing and debugging. Unlike the Quick Photometry, the Object Inspector shows results, that has been obtained during the “full” photometry. Because of this, calibration and photometry must be performed first. The results are more relevant.
To activate the tool:
Object Inspector tool
Using the left mouse button, click on the image (1), to select an object. The object is highlighted and its properties are displayed in the right panel (2).
The following object parameters are presented:
Several dimensions are presented in the image area (3):
(4) Here, you can change the current aperture.
See also