One-shot strategy: Single exposure (time in seconds), one filter.
Predefined single-execution templates are provided for up to three filters.
Specify exposure time and filter for each. If more than three filters are needed, use
This is the simplest case. You state a single exposure time in seconds plus a number of repetitions.
All exposures are done in the same filter.
Predefined stacking sequences are available for at most five filters. This is shown here.
Specify the five exposure times and filters separately, the repetition counter counts the
number of blocks, i.e., 10 would mean a total of 50 exposures here.
This setup allows total control of the filter sequence. Start with defining a
single main exposure time (10 sec. in the example). Then, issue the total number of exposures,
not the number of repetitions of the sequences in the next field (16 exposures in the example).
The filter sequence and the exposure increase specify the filter to use plus an individual
multiplication factor for the principal exposure time. In the example, five exposures in V at 20 sec.
will be followed by three exposures in B, 30 sec. each. Note that you have to spell the filter
names correctly, otherwise execution will fail at run-time. The available filters are:
The simplest case: Define an exposure time and a single filter, repeat for SpanSec seconds.
Depending on the chosen exposure time and the requested read-out size this will result in a
certain number of exposures n<SpanSec/ExposureTime.
Predefined sequences are available for at most five filters. This is shown here.
Specify the five exposure times and filters separately, the cycle will repeat until the specified maximum
span is reached. If within a cycle, the cycle will be continued until finished.
This sequence needs only a dither offset as an arcsec-pair in α and δ.
The actual dither applied is randomized at run-time, distributed Gaussian with
a σ as specified. In total, Count images are taken.
Gives the user total control on the applied dither pattern. The dither has to be
supplied in pairs of α and δ dithers, separated by a semicolon. If less then
Count pairs are supplied, the pattern is repeated.
Currently, only dithering with a maximum of two filters is supported. Within this setup,
the provided dithering is applied at the start of each two-filter block, i.e., in the example
a B and a V exposure is done at offset 0,0 to α and δ, then an offset of 5 and 5 arcsec is applied,
and again a B and a V exposure are taken.
Takes a single exposure with the stated exposure time. Consult the ETC to get a S/N estimate.
Takes the number of requested exposures immediately after one another. The exposure time is the exposure time of a single exposure.