De Vaucouleurs Atlas Type: SB(rs)dm
Filter: B
Telescope: UH 2.2-m
North up , East left
Field Dimensions: 2.3 x 1.7 arcminutes
RC3 Type: SB(s)d
RSA Type: -----
Surface Brightness Range Displayed: 20.0-26.0 mag per square arcsec
Absolute Blue Magnitude: -17.9
De Vaucouleurs Atlas Description:
NGC 3906 shows an off-centered bar that is more typical of SBm types, but it has a more extensive disk and better-defined spiral structure, thus we adopt an Sdm classification. The inner pseudoring is a weak feature of the wrapped arm type. The bar is very well-defined, patchy, and lacks any trace of a bulge or nucleus.