10 Lac Nebula Complex (Sh2-126, LBN 437, LBN 438, ...)


MouseOver for object identification, Click on image for a zoomable version

Location / Date

Zellerndorf, Aug and Sept 2013

Telescope / Mount / Guiding

Canon EF 200mm f/2.8L II USM at f4.0
Skywatcher NEQ6, Mgen

Camera / Exposure

Canon EOS 500D modified

80 x 10min ISO 400 (total 13h 20min)
43 x 20min ISO 800 (14h 20min) with 12nm Hα-Clipfilter


Theli, Fitswork, PixInsight, Photoshop


Sharpless 126 (Sh2-126) is a large emission nebula in Lacerta. The source of its ionization is the intense ultraviolet radiation of the star 10 Lacertae, a blue main sequence star of spectral class O9V.
LBN 437 is a molecular cloud, its densest part is associated with some bright young stars, among which stands out LkHα 233, also known as variable star V375 Lacertae: a young Ae / Be Herbig star which shows strong Hα-emission.

This region with its weak nebulous filaments is part of Lacerta OB1, a huge star forming region, 1200 light years away from earth.

Some parts of this region I have shoot with other optics: LBN 437 and LBN 438.

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