The advanced settings tab contains the options that are not changed very frequently, but in the same time allow to configure important or handy features on APT.

Plans Start Delay

1. Plans Start Delay
Defines how many seconds to wait after click on the Start button, before plan execution begins.

LV Stack Count

2. LV Stack Count
Defines how many images to be used in LV Stack.

Camera Low Space

3. Camera Low Space
Defines when to notify you about low camera card free space. 0 disables this notification. The notification is flashing icon in the Status panel.

Camera Low Battery

4. Camera Low Battery
Defines when to notify you about low Camera battery. 0 disables this notification.  The notification is flashing icon in the Status panel.

PC Low Battery

5. PC Low Battery
Defines when to notify you about low PC battery. 0 disables this notification.  The notification is flashing icon in the Status panel.

Buila Trigger Delay

6. Buila Trigger Delay
Defines the delay to be used for exposure end when the audio trigger is used. The value depends on the cable implementation. For more information see EOS Shutter Cables.

Extreme EOS Shutter Delay

7. Extreme EOS Shutter Delay
Defines the delay needed to store an image on the memory card in Extreme EOS Shutter mode. For more details see Extreme EOS Shutter mode


Defines what ISO to be used for the images taken through AstroTortilla. 0 means to use the maximum supported value.

Histogram Auto-Stretch

9. Histogram Auto-Stretch
Defines the factor that is used by the Automatic Histogram stretching in EOS Histogram mode. The values are between 0.00 and 1.00. The bigger value means more aggressive stretching. Default value - 0.65

Change folder after midnight

10.  Change folder after midnight
On session start APT creates a folder for the current date and stores all the images in this folder or in sub folders (depending on the selected grouping options). If you want to keep the images strictly separated by date, enable this option to create a new folder after midnight.

Change folder after midday

11. Change folder after midday
If enabled an images storing folder for new date will be created after midday. Helps to separate correctly the images from sequenced nights. For example the nights Fri-Sat, Sat-Sun, Sun-Mon will have overlapping dates mix the images from the previous and next nights. Enabling the option will generate 3 corresponding folders for the nights separated by the midday of Saturday and Sunday.

Bigger UI Fonts

12.  Bigger UI Fonts
Defines to use bigger fonts for most of APT interface. This can be handy on notebooks with big screen resolution and small display.

Advanced Flat/Bias plans

13. Advanced Flat/Bias plans
When selected you will be able to define the duration for exposures in Flat and Bias plans. When it is unchecked, In EOS mode the Flat plans will use the AV dial mode and will leave the camera to select the exposure; Bias plans will use the shortest supported by the camera exposure. In CCD/CMOS mode the Bias plans will use the shortest supported by the camera exposure.

Auto Connect Camera

14. Auto Connect Camera
When enabled upon starting APT will try to make connection to Canon EOS or Nikon camera  (if it is in DSLR mode). Disable this if you want to manage the connection to the camera manually.

Remember Effects

15. Remember Effects
When enabled APT will keep the selected Preview Effects between the restarts.


16.  CR2/NEF to TiFF
When enabled APT will make on fly conversion of the EOS raw files into TIFF format. The original file will not be deleted. The TIFF file is without ICC profile and compression.

Don't remember Object Name

17.  Don't remember Object Name
When enabled APT will not store the object name (entered in Camera tab) between the sessions.

Ask for Object Name

18. Ask for Object Name
When enabled APT will ask to enter Object Name on every start of an imaging plan. It is useful reminder when object name is part of the file naming or grouping.
Note: Do not use this option of you use the #NextPlan command or your automation will not work unattended!

No Camera Clock Sync

19.  No Camera Clock Sync
When disabled APT will synchronize the Canon EOS or Nikon camera clock with PC clock on camera connection.

RDP mouse fix

20.  RDP mouse fix
If you have problems with the mouse cursor when you are using Remote Desktop, enable this option.

Determine Lens Focal Length

21. Determine Lens Focal Length
When enabled APT will try to determine the focal length of the attached to the Canon EOS or Nikon camera lens. If focal length is found it will be stored in Tools tab Focal Length field for automatic usage from PointCraft and Object Calculator.
Disable it if you are getting false readings when the camera is attached to a telescope.

Disable Nikon Dial Check

22. Disable Nikon Dial Check
Use this option if your Nikon camera reports wrong dial mode when lens is detached.