Here are a list of protocols from our lab. Some of the protocols were developed in my previous labs (and might be optimized by our current lab).
How to avoid dauer-associated effects on longevity under reduced Insulin/IGF-1 signaling in the nematode Caenorhabditis elegans
"To discriminate intestinal autofluorescence from SKN-1::GFP epifluorescence, a triple-band emission filter set (Chroma 61000) was used in conjunction
with a narrow-band excitation filter (484/14 nm)." An and Blackwell 2003.. https://www.ncbi.nlm.nih.gov/pubmed/12869585