The Sequence tab is used to set up sequences of exposures and capture them automatically. Multiple images of the same area of sky can be combined later using the Combine Files command to improve the image quality (signal to noise ratio), or used to capture the behavior of a short-period variable or the motion of an asteroid.
Specify a base filename for the images in the Autosave Filename control. A three-digit sequence number is automatically appended to this filename to identify each exposure, followed by a user-specified suffix that distinguishes each different 'type' of exposure within the sequence (e.g., different exposure time, binning, etc.). The suffixes are specified in the Sequence Setup dialog described below. Do not include a file extension in the Autosave Filename; the file format and extension for images acquired by a sequence are specified on the Files tab of the Settings dialog. The sequence number and unique suffix for the image currently being exposed, downloaded, or saved are concatenated and displayed in the read-only Suffix field.
The Start at field allows you to specify the first sequence number that will be used. This allows you to use the same base filename without overwriting previous files or changing the destination directory for the acquired images.
With the exception of the Start
and Stop buttons, described below,
all other controls for configuring a sequence are accessed from the Options button 
menu:
Two sequence modes are available. The standard mode allows you to assign up to 16 slots with different exposure type, exposure times, ISO selection, binning factor, and repeat count. Scheduled Mode allows you to specify a series of exposures to be taken at specific times; this is useful for eclipse imaging, laboratory imaging, etc.
The exposure settings are configured using the Setup Sequence command.
The Set Destination Path command brings up a folder selection dialog that allows you to select the folder into which the files are saved.
Resume Sequence is available only if the previous sequence was stopped prematurely, either by the operator clicking the Stop button or by the occurrence of an error. Selecting this option causes the sequence to continue from the point of interruption. Any exposure in progress when the sequence was stopped is repeated from the beginning. During a sequence interruption you can (re)focus or take individual images using the Expose tab, but certain actions cause will prevent the resumption of the sequence. These include starting a new sequence or clicking OK in the Setup Sequence dialog.
The next two commands are mutually exclusive and control whether the sequence uses the Full frame of the camera sensor or the Subframe from Settings Tab. The latter setting causes the sequenced exposures to use the subframe rectangle defined on the Settings tab. The binning given there is not used; each different exposure in the sequence specifies its own binning. A sequence cannot specify an arbitrary subframe nor use different subframes in different exposures. The selection of full frame or subframe is displayed on the Sequence Tab itself as 1x1 Image Size. Note that the subframe dimensions shown in this control are always normalized to the unbinned sensor array, even if all the images of the sequence are at a higher binning.
The Save Image As FITS, Leave Image On CF and Save Image As Raw options appear only when using a DSLR camera that supports either the Leave Image on CF or Save Image as Raw options. Save Image As FITS indicates that the sequence should operate normally. Leave Image on CF only appears for DSLR cameras that support leaving the image on the Compact Flash card instead of downloading to the PC. If this mode is enabled, a small JPEG image will be downloaded and displayed (but not saved), instead of the full image. The full image will be saved to the CF card, in either RAW format or JPEG format, depending on the Fast Mode selector. Save Image As Raw indicates that each image captured in the sequence should be saved directly to disk as it is acquired, using the native format for the selected camera, rather than the FITS format that is normally used. When using Save Image As Raw, the images are not displayed as they are acquired.
When Overwrite Files is checked, MaxDSLR will always save files regardless of whether there was a file with the same name already on the disk. When it is switched off, an attempt to overwrite a file will cause the exposure sequence to abort.
NOTE
Autoguider operation is independent of sequence execution and can be turned off and on at any time. Normally, if the autoguider is active at the start of a sequence, it will continue to run throughout. Autoguider imaging is paused during main camera readout, with the guide star being automatically reacquired after the readout is complete. A delay of five seconds is imposed in order to allow time for the guider to settle, the value of which you can increase by setting Delay between on the Setup Sequence dialog to more than five seconds.