Takahashi TOA-130　Bitran BT-218ME
R10min.x3　G10min.x3　B10min.x5
IDAS RVB filter　　RGB

NGC3587 (M97　"Owl Nebula" Planetary Nebula in Ursa Major)
11h14m47.8s +55 01 09 Diam.>170" Mag.(v)12.0 Mag(V)9.9 Mag Cent Star16.0