The Collaborative International Dictionary of English v.0.48:

Unobscured \Unobscured\
   See obscured.

Moby Thesaurus II by Grady Ward, 1.0:

26 Moby Thesaurus words for "unobscured":
   clear, cloudless, diaphanous, light, lightish, lightsome, lucent,
   lucid, luculent, pellucid, relucent, serene, translucent,
   translucid, transparent, uncamouflaged, unclouded, unconcealed,
   uncurtained, undarkened, undisguised, unhidden, unobscure,
   unscreened, unshaded, veilless