I got this (and another) beautiful slOka, on the shiva-tAnDavam, and am trying to make sure the words are right, and also find the source. I am not sure i understand it completely, and request help in all those three directions -
1. correctness of the words
2. source
3. translation
kalpApayi nishanta-sandhya-samayE sahyOmaram? gAgaNaM??
samprapya pratatanga-hara-valanA vaichitrya-chitra-sthitiHi/
akashi _ svapuSyamE? ca vividhA sRSTiH samAsUtrayaN
trailokasya patiH tvamEva bhagavaN viswAkRtir jRmbhasi//
The underscore in the third line is a missing syllable.. doubtful words have question marks..