[Image] menu

[Flip Verticaly]

The image will be flipped along a horizontal axis.

Tips

If you use this command, the coordinates will flip together with the View. Note that this is different from other software such as IRAF.

[Flip Horizontaly]

The image will be flipped along a vertical axis.

Tips

If you use this command, the coordinates will flip together with the View. Note that this is different from other software such as IRAF.

[Rotate...]

This command rotates the active image by a specified angle. The center of the active image is the center of the rotation. Any empty spaces produced by rotation will be filled with the count value specified in the BLANK keyword.

[Rotation]

This command specifies the angle of rotation.

[Direction]

This command changes the direction of rotation, clockwise or anticlockwise.

[Retain image Size]

With this box checked, the image will not change size after the rotation. Any parts that exceed the original image size will be deleted. With this box unchecked, the image will be enlarged after the rotation. Nothing will be deleted. Any empty spaces produced by rotation will be filled with the count value specified in the BLANK keyword. Notice The image will degrade by rotating. If you need to rotate an image to make a composition, you should perform the rotation within the composition.

Tips

If the BLANK keyword does not exist, pixels filling the empty spaces will be at the minimum possible count value of the image. If it is a FITS image, the BLANK keyword will be included in the header when the image is saved.

[Move...]

This command moves the active image horizontally or vertically.

[Direction]

Select the desired direction using [Right][Left][Up][Down].

[Move]

Input how many pixels you want to move. Empty spaced produced by the movement will be filled with the count value specified in the BLANK keyword.

Tips

[Image Size...]

This command changes the resolution of the active image. It is useful when you want to adjust the size of the images you are compositing.

[Width][Height]

Enter the new size of the image in either absolute values (x, y) or relative percentage (%).

[Units]

Select absolute values (x, y) or relative percentage (%).

[Ratio]

Select whether to lock in a ratio of the image or not.
[Fixed] The command locks the ratio of the resized image into the aspect ratio of the original image.
[Free] This command lets you enter an arbitrary image size with any ratio.
[ST6] This command sets the ratio of the image to the ratio of SBIG ST6 CCD.

[Add...]

This command adds to the count value of the pixels in the active image.

[Image]

The name of the active image file is displayed here.

[Amount]

Select what you want to add.
[A Constant] This command adds a constant value to all pixels in the active image.
[An Open Image] This command adds the values of another open image to the active image.
[An Image File] This command adds the values of an unopened image to the active image.

[Move]Button

This command changes the location of the image. Clicking the right-left-up-down button, the image moves by 1 pixel. Clicking the button while holding down the Shift key moves the image by 10 pixels per click. Clicking While holding down the Ctrl key moves the image by 0.1 pixels per click.

[Rotate]Button

This command rotates the active image.

Center of the active image will be the center of the rotation.

Enter the angle either by typing or by clicking spin button. The image rotates by 1 degree per click, by 10 degrees per click while holding down the Shift key and by 0.1 degree by per click while holding down the Ctrl key.

If one or more base points are specified, the first base point becomes the center of rotation.

Tips

Sometimes objects seem to disappear after a process. This is usually because the new count values of the objects are outside of the set gradation level. You will have to find a new gradation level to view the objects.

Tips

If an image has a BLANK keyword, and there are pixels with count values equal to the BLANK value, they will stay BLANK after processing. If the active image and the image to be added both have a BLANK keyword, the BLANK value of the active image is used. If only the added image has a BLANK keyword, the BLANK value of the added image is used.

Tips

The empty spaces that appear after moving or rotating an image are filled with pixels that have the count value specified in the BLANK keyword.

[Subtract...]

This command subtracts to the count value of the pixels of the active image.

[Image]

The name of the active image file is displayed here.

[Amount]

Select what you want to subtract.
[A Constant] This command subtracts a constant value from all pixels in the active image.
[An Open Image] This command subtracts values of another open image from the active image.
[An Image File] This command subtracts values of an unopened image from the active image.

[Move]Button

[Rotate]Button

This command rotates the active image.

Center of the active image will be the center of the rotation.

If one or more base points are specified, the first base point becomes the center of rotation.

Tips

Sometimes objects disappear in this process. This is sometimes because the new count values of the objects are outside of the set gradation level. You will have to find a new gradation level to view the objects.

Tips

The empty spaces that appear after moving or rotating an image are filled with pixels that have the count value specified in the BLANK keyword.

[Multiply...]

This command multiplies the count value of the pixels in the active image.

[Image]

The name of the active image file is displayed here.

[Amount]

Select what you want to multiply by.
[A Constant] This command multiplies all pixels in the active image by a constant value.
[An Open Image] This command multiplies the active image by the values of another open image.
[An Image File] This command multiplies the active image by the values of an unopened image.

[Move]Button

[Rotate]Button

This command rotates the active image.

Center of the active image will be the center of the rotation.

If one or more base points are specified, the first base point becomes the center of rotation.

Tips

The empty spaces that appear after moving or rotating an image are filled with pixels that have the count value specified in the BLANK keyword.

[Divide...]

This command divides the count value of the pixels in the active image.

[Image]

The name of the active image file is displayed here.

[Amount]

Select what you want to divide.
[A Constant] This command divides all pixels in the active image by a constant value.
[An Open Image] This command divides the active image by the values of another open image.
[An Image File] This command divides the active image by the values of an unopened image.

[Move]Button

[Rotate]Button

This command rotates the active image.

Center of the active image will be the center of the rotation.

If one or more base points are specified, the first base point becomes the center of rotation.

Tips

The empty spaces that appear after moving or rotating an image are filled with pixels that have the count value specified in the BLANK keyword.

[Batch [Composite...]]

You can make multiple composite images from selected files by a batch process.

[File]List

This is the list of images that will be composited. All open images are added to this list automatically.

[Remove]

This command removes a selected image from the list.

[Add]

This command adds an image to the list.

[Alignment Method]

You can select the method of aligning the images. If you do not check the [Alignment Method] check box, no alignment will be preformed.
[Image Centroid] The centroid of each image is calculated automatically and Makali`i aligns the images based on these centroids.
[Object Matching] The offset between images is calculated automatically, and Makali`i aligns the images. Specify the maximum acceptable offset value by clicking the [Object matching setup] button.

[Display Composite Image in]

Select where to display composition result.
[New window] Opens a new window to display the composite image.
[Active window] The composite image is displayed in the active window.

[Composite Method]

Select the method of compositing.
[Add] Adds all the images in the list.
[Arithmetic mean] Composites the images on the list by taking the arithmetic mean.
[Median] Composites the images on the list by taking the median.

[3-S.D.clipping]checkbox

You can choose this option only when arithmetic mean is selected as the [Composite Method]. The arithmetic mean is calculated using 3-S.D.clipping.

[Object Matching Setup]

When [Object Matching] is selected as the [Alignment Method], click the [Object Matching Setup] button to change the setting for object matching.

[Maximum Offset]

Specify the maximum acceptable offset value in pixels. The lower the value the quicker the calculation. But if the actual offset is greater than the specified maximum, the image will not be aligned properly.

[Move Sub-pixels]

If this check box is checked, the offset is calculated to an accuracy of 0.1 pixel units.

Tips and Notice

Instead of using [Image Centroid] or [Object Matching], you can align the images by setting base points in advance.
You can use [Image Centroid] when making a composite of images of planets.
You can use [Object Matching] when making a composite of images of the moon's surfice, the sun's corona, or star fields and such.
Note that [Image Centroid] and [Object Matching] can only handle vertical and horizontal offsets. They can not handle offsets caused by rotation.