Optical systems with asymetric magnification

An optical system comprising:

• a first anamorphic optic having a first focal length and a first focal line, wherein the first anamorphic optic is configured such that the first focal line is about parallel to a cross track direction;
• a second anamorphic optic having a second focal length and a second focal line, wherein the second focal length is different than the first focal length, wherein the second anamorphic optic is positioned such that the first focal line and the second focal line are in about the same location, wherein the first and second anamorphic optics are aligned along an optical signal path, and wherein the first and second anamorphic optics are configured to provide afocal magnification to a signal beam along an along track direction to produce a magnified beam, wherein the along track direction is perpendicular to the cross track direction;
• and
• a line scan imager, wherein the line scan imager comprises an objective lens and a linear detector, wherein the second anamorphic optic is configured to direct the magnified beam at the objective lens, wherein the linear detector has a linear detector length and a linear detector width, and wherein the linear detector length is greater than the linear detector width.