Read an Object from a Channel

#### Description:

This function reads the next Object from a Channel and returns a pointer to the new Object.

#### Synopsis

AstObject $\ast$astRead( AstChannel $\ast$this )

#### Parameters:

##### this
Pointer to the Channel.

#### Applicability

##### FitsChan
All successful use of astRead on a FitsChan is destructive, so that FITS header cards are consumed in the process of reading an Object, and are removed from the FitsChan (this deletion can be prevented for specific cards by calling the FitsChan astRetainFits function). An unsuccessful call of astRead (for instance, caused by the FitsChan not containing the necessary FITS headers cards needed to create an Object) results in the contents of the FitsChan being left unchanged.
##### StcsChan
The AST Object returned by a successful use of astRead on an StcsChan, will be either a Region or a KeyMap, depending on the values of the StcsArea, StcsCoords and StcsProps attributes. See the documentation for these attributes for further information.