Purpose
Acquire images images while dithering along the slit in
an ABBA nod pattern
___
| |
|A|
| |
|C|
| |
|B|
| |
---
where
- "A" is the first and last location target on the slit
- "B" is the second and third location target on the slit
- "C" is the starting location of the slit
Usage
abba_br <x> [n]
Arguments
x = offset along the slit (distance from A-C or B-C)
n = number of repeats of ABBA sequence (default=1)
Output
Restrictions
Exit values
0 = normal completion
1 = wrong number of arguments
2 = arguments are not valid numbers
Example