The APT Settings dialog box is accessible from Tools tab or with Alt+S shortcut.
The Main settings tab contains the most general settings related to APT behavior.

Skin color

1. Skin color
APT has six skins :
Light Grey
Note that after skin change there is need to restart APT.

Status Position

2. Status Position
Depending on the screen aspect ratio APT can place the Status Panel on different places in order to use the screen place better and show bigger preview image. When Auto option is selected on wide screens the Status is vertical in left of Image Preview like it is in the Main Screen image, On 4:3 screens it is horizontal under Image Preview. The other options defines the desired position no matter the screen ratio.
This option can useful when APT is running on one computer and remote connection is made on other with different screen ratio. Or when APT is running mainly in window mode and you want different arragment.



3. Language
Defines special language support like Japanese and Chinese. The Auto option lives the letters displaying, folder and filenames handling to Windows.

Old Style Interface

4.  Old Style Interface
When enabled APT will use the old approach of interface which includes total control over screen that doesn't allow to see taskbar and also use small floating screen when is minimized (see Minimized mode). This mode has some problems under Windows 10.


5. Tooltips
Enables/Disables the Tooltips (balloon) help. When enabled you can point a button, list, label and etc. to get a short help.

No Tumbs

6.  No Tumbs
When enabled APT will not generate/show thumbnail images in Img Browser Tab.

No Folders

7.  No Folders
When enabled APT will show in Img Browser Tab only the names of the image and will hide the folders. When disabled the list will contain both the images and the folder.

Observer Name

8. Observer Name
Defines observer's name that to be stored in the FITS header.

Live View Automation

9.  Live View Automation
When enabled and LiveView is activated APT sets some parameters in Camera Tab (depends on the APT mode) in order to get maximum sensitivity.
DSLR mode:
Sets ISO to maximum (or the defined Automation Max ISO)
Sets Exposure to 30s
CCD/CMOS mode:
Sets binning to maximum
When LiveView is stopped the parameters in Camera Tab are restored to their previous values.
Disable this option if you don't want APT to change the Camera Tab settings on LiveView start.

Automation Max ISO

10. Automation Max ISO
Defines the maximum ISO to set for LiveView Automation. Some modern DSLRs support extremely high ISO values which are useless for astro needs. Using this option you can limit the ISO. Empty value or 0 defines to use the maximum supported by the camera.

Mirror Lock Automation

11.  Mirror Lock Automation
When enabled APT will take care managing the state of Mirror Locking custom function in EOS camera menu.
Note: Magic Lantern takes control over the Mirror Locking function and makes it un-accessible for APT. You will have to uninstall  Magic Lantern or will have to enable/disable Mirror Locking function manually from the camera menu.

KMTronic shutter cable

12. KMTronic shutter cable
Defines that the selected Long Exposure serial/shutter cable is based on the KMtronic USB Relay board. This cable is very easy to be made. Instructions can be found here

Images Path

13. Images Path
Defines the folder where image files are to be stored. Any existing local or network folder can be used.

Select Folder

14. Select Folder
Opens a dialog box that allows selecting an existing Images Path folder.

Files Grouping

15. Files Grouping
Defines how you want to group the image files.  It opens a dialog box where you can include and exclude the sub-folder to be used to organize image files.
The button "->" includes an item, "<-" excludes an item. Up/Down change the order.
The items marked with * are mandatory.
When you click on OK take a look on "Sample Path" to see how the folder structure will look like.

Name Parts

16. Name Parts
Defines what you want to include in the name the image files. It opens a dialog box where you can include and exclude name parts.
The button "->" includes an item, "<-" excludes an item. Up/Down change the order.
The items marked with * are mandatory and at least one item with ** should be used.
When you click on OK take a look on "Sample Name" to see how the image names will look like.
For DSLRs the Image ID is provided by the camera. For CCD/CMOS is sequential number preserved between the sessions. It can be reset from Reset Image ID button in CCD Settings tab

Sample Path

17. Sample Path
Shows how the folder structure will look like depending on the items selected in Files Grouping dialog box.

Sample Name

18. Sample Name
Shows how the image filename will look like depending on the items selected in Name Parts dialog box.

Export Log File

19. Export Log File
APT logs various information about the program behavior and usage. In case of problem use this button to save the Log file somewhere and then send it to the APT support.

Backup Settings

20. Backup Settings
Backups all APT settings. The file can be used to setup identical configuration on other machine or just for backup.

Restore Settings

21. Restore Settings
Restores the settings previously saved to a file.

Import Tooltips

22. Import Tooltips
Allows easily importing translated to other language tooltips help. Starting from version 3.40, during the installation APT will not overwrite the applied tooltips translations so you have to re-apply them only when there is a new edition of the translated help.

PI WBP Names

23. PI WBP Names
When enabled APT will generate the files names using the pattern Keyword_Values like :
This makes much easier the files grouping in WBP - Weighted Batch Preprocessing script in PixInsight.