A multimode seeker (300, 500, 600), comprising: an imaging infrared seeker including a focal plane array (332, 532, 632) a radio frequency seeker including a radio frequency transceiver wherein the imaging infrared seeker and the radio frequency seeker share an optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) to form an infrared image of an outside scene on the focal plane array on an image detector (332, 532, 632) collimate radio frequency radiation transmitted from the radio frequency transceiver and focus radio frequency radiation received from the outside scene onto the radio frequency transceiver wherein the shared optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) includes a plurality of baffles (370, 380, 570, 580, 670, 680) to shield the focal plane array (332, 532, 632) from sunlight incident at an angle greater than a predetermined sun exclusion angle, each baffle (370, 380, 570, 580, 670, 680) comprising a material that is opaque to infrared radiation and transparent to radio frequency radiation wherein the shared optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) comprises: a primary mirror (322, 522, 622) and a secondary mirror (326, 526, 626) disposed along a common optical axis (390, 590, 690) the primary mirror (322, 522, 622) disposed to receive infrared and radio frequency radiation from a scene the secondary mirror (326, 526, 626) disposed to receive reflected infrared and radio frequency radiation from the primary mirror (322, 522, 622), and to reflect infrared radiation through a central aperture of the primary mirror (322, 522, 622) towards the focal plane array image detector (332, 532, 632); and wherein the plurality of baffles (370, 380, 522, 526, 530, 622, 626, 630) comprises: a first baffle (370, 570, 670) extending outward from a perimeter of the secondary mirror (326, 526, 626) and having a generally conical inner surface (572, 672) proximate to a segment (521 a, 621 a) of a marginal ray (521, 621), the segment (521 a, 621 a) propagating between the primary mirror (322, 522, 622) and the secondary mirror (326, 526, 626). an imaging infrared seeker including a focal plane array (332, 532, 632) a radio frequency seeker including a radio frequency transceiver wherein the imaging infrared seeker and the radio frequency seeker share an optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) to form an infrared image of an outside scene on the focal plane array on an image detector (332, 532, 632) collimate radio frequency radiation transmitted from the radio frequency transceiver and focus radio frequency radiation received from the outside scene onto the radio frequency transceiver wherein the shared optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) includes a plurality of baffles (370, 380, 570, 580, 670, 680) to shield the focal plane array (332, 532, 632) from sunlight incident at an angle greater than a predetermined sun exclusion angle, each baffle (370, 380, 570, 580, 670, 680) comprising a material that is opaque to infrared radiation and transparent to radio frequency radiation wherein the shared optical system (322, 326, 330, 522, 526, 530, 622, 626, 630) comprises: a primary mirror (322, 522, 622) and a secondary mirror (326, 526, 626) disposed along a common optical axis (390, 590, 690) the primary mirror (322, 522, 622) disposed to receive infrared and radio frequency radiation from a scene the secondary mirror (326, 526, 626) disposed to receive reflected infrared and radio frequency radiation from the primary mirror (322, 522, 622), and to reflect infrared radiation through a central aperture of the primary mirror (322, 522, 622) towards the focal plane array image detector (332, 532, 632); and a primary mirror (322, 522, 622) and a secondary mirror (326, 526, 626) disposed along a common optical axis (390, 590, 690) the primary mirror (322, 522, 622) disposed to receive infrared and radio frequency radiation from a scene the secondary mirror (326, 526, 626) disposed to receive reflected infrared and radio frequency radiation from the primary mirror (322, 522, 622), and to reflect infrared radiation through a central aperture of the primary mirror (322, 522, 622) towards the focal plane array image detector (332, 532, 632); and wherein the plurality of baffles (370, 380, 522, 526, 530, 622, 626, 630) comprises: a first baffle (370, 570, 670) extending outward from a perimeter of the secondary mirror (326, 526, 626) and having a generally conical inner surface (572, 672) proximate to a segment (521 a, 621 a) of a marginal ray (521, 621), the segment (521 a, 621 a) propagating between the primary mirror (322, 522, 622) and the secondary mirror (326, 526, 626). a first baffle (370, 570, 670) extending outward from a perimeter of the secondary mirror (326, 526, 626) and having a generally conical inner surface (572, 672) proximate to a segment (521 a, 621 a) of a marginal ray (521, 621), the segment (521 a, 621 a) propagating between the primary mirror (322, 522, 622) and the secondary mirror (326, 526, 626).