QSI 520c Guía de usuario descargar pdf (Pagina 61)

QSI 500 SERIES USER GUIDE

The dialog box above will open showing a list of all currently open files on the left. Select

individual image files and then click the “>>” button to add them to the list of Selected

Images or click the “Add All” button to add all the images. Click OK.

This brings up the Combine Images dialog, which performs two related functions. It aligns

and then combines the individual images. Alignment is important because unless you have

absolutely perfect polar alignment and tracking, the position of individual stars will shift

slightly between images.

MaxIm LE provides 3 types of manual alignment. Other programs, such as MaxIm DL

provide additional types of alignment including fully automatic alignment. For this example

we’re going to use the Align Mode, “Manual 2 stars.” This 2 star alignment will shift and

rotate individual frames to line up the stars in the images.

MaxIm makes manually aligning the images painless. If you’re aligning on stars, click the

checkboxes next to “Use Centroid” and “Auto Next”. With “Use Centroid” MaxIm will

calculate the center of mass of a point object like a star allowing sub-pixel alignment. With

Auto Next set, each time you click on an image to pick the alignment star, MaxIm will

automatically proceed to the next image. Select a star fairly near the edge of the first image

and click on it. That sets the position of the first star in the alignment process. If “Auto Next”

is set, MaxIm will display the next image file. Click on the same star in each image.

In the dialog box below we are already half way through the alignment process. Note that

the “Center Point” is set to “23, 57” and the “Star 2” button is depressed.

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QSI 520c Guía de usuario Pagina 61