# Constraints

Constraints define criteria that must be satisfied for satellite access.

## Built-in Constraints

### ElevationConstraint

::: brahe.ElevationConstraint

### ElevationMaskConstraint

::: brahe.ElevationMaskConstraint

### OffNadirConstraint

::: brahe.OffNadirConstraint

### LookDirectionConstraint

::: brahe.LookDirectionConstraint

### LocalTimeConstraint

::: brahe.LocalTimeConstraint

### AscDscConstraint

::: brahe.AscDscConstraint

## Logical Composition

### ConstraintAll

::: brahe.ConstraintAll

### ConstraintAny

::: brahe.ConstraintAny

### ConstraintNot

::: brahe.ConstraintNot