Location / Date

Spain and Germany, Summer 2013

Telescope / Mount / Guiding

TMB 80/600 (focal lenght 520mm), Losmandy G11

Camera / Exposure

SBIG ST8300, Baader LRGB, Hα Filter
30 x 20min Lum
19 x 20min R
9 x 20min B
9 x 20min G
7 x 20min Hα
total 14h 40min

Processing

Theli, Fitswork, PixInsight, Photoshop

Notes

Image acquisition by Frank Sackenheim in Teneriffa (Spain) and Germany
Image processing by me

van den Berg (vdB) 152 is a blue reflection nebula that glows at the bottom of a dark Bok globule called Barnard (B) 175.It is located 1.400 light-years away in the constellation Cepheus.
Near the edge of a large molecular cloud, interstellar dust in the region blocks most of the starlight behind it or scatter light from the embedded bright star giving parts of the nebula a characteristic blue color. Ultraviolet light from the star is also thought to cause a dim reddish luminescence in the nebular dust.

Embedded in the left side of the nebula is the Herbig Haro object HH 450, a jet emitted from a newly forming star. The thin, red filaments of a huge supernova remnant, SNR 110.3+11.3, in the left side of the image, appear to be approaching vdB 152 and may or may not collide with it in the future.

Dengel-Hartl (DeHt) 5 is a HII- and OIII-region, ionized by the white dwarf WD 2218+706 (the blue star in the center of the nebula). Beverly Lynds catalogued the brighter part as LBN 538.

Published in "Sterne und Weltraum" 07/2014, "Sky & Telescope" 07/2014

3rd place in the "Interstellarum" photo-competition 2014