Object name: VDB148

Designation(s): VDB148,

vdB 148 is a reflection nebula around the 8.5 magnitude F2 star HD 239856 which The Sky puts at 338,139,600au or a bit less than 5400 light-years from us. It is located in southern Cepheus.

In his catalog, van den Berg lists the surface brightness as very bright, bright, moderate, faint and very faint. #148 is listed as faint. It is listed as type II which means the illuminating star is outside the nebula. His color scale ranges from very blue to blue to moderately blue, to intermediate to moderately red then red and finally very red. vdB 148 rates the blue designation. Next, he rates the absorption around the nebula based on star density. That ranges from strong to moderate to weak to absent. He rates vdB 148 as moderate. In Tom Davis' images, there's an obvious color change surrounding vdB 148 in his image that would indicate absorption. It clearly shows what van den Berg considered moderate absorption I did see a faint reddening of my background I was going to balance out until I looked at Tom's image. I left it in. It's so weak I doubt you'll notice it, however. Unfortunately, his site has gone dark.

The PDF of the van den Berg paper announcing his list of 158 is at . Click on the link to ADS services then the link to the PDF file.

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

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