Sandqvist 187 and 188

Sandqvist 187 and 188

Dark Cloud in Norma

Constellation: Norma
Ra: 16hr 33m 50s
Dec: -44d 59m 33s
Distance: 2,300 light years
Image Size: 34.5' x 34.5'
North: Up right; East up left



Sandqvist 187/188 is a set of dark, elongated clouds in the constellation of Norma, referred to as the Norma Cloud by Sandqvist in 1977. 187 is in the lower right, and the more linear 188 is in the upper left. This is a star forming region. Low mass stars are mostly formed in these dark clouds. Its distance estimates vary widely from about 500 to 2,300 light years. Sandqvist 187 contains several HH (Herbig-Haro) objects, shown below in the annotated image (thanks to S. Rasool). HH objects are patches of nebulosity associated with young stars that create jets that interact with the surrounding gas and dust. North is up toward the right and east is up toward the left. The image is about 34.5′ x 34.5′.

Exposure: 10.25 hrs RGB
Telescope: PlaneWave CDK20 0.5m f/6.8
Mount: PlaneWave Ascension A200h
Oag: Astrodon MonsterMOAG
Acquisition: ACP-8 Expert
Calibration: CCDStack v2
Observatory Site:, Siding Spring, NSW, Australia
Camera: SBIG STX16803
Filters: Astrodon E-Series RGB
Guider: SX Lodestar
Camera Operation: MaximDL 5.24
Processing: Photoshop CC 2018
Image Date: 05/17/2018 - 05/19/2018

1 Comment

  1. Sakib

    This is a really nice image of an unphotographed dark nebula! You can even see some Herbig Haro objects.


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