Focal Pointe Observatory
Astrophotography by Bob Franke

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Barnard 211, 216 & 217

 

Click the image for a 57% size view. (1900 x 1425 - 1.36 MB)

Instrument

Takahashi FSQ-106ED @ f/5.0 (530 mm F.L.) Captured at 2.1 arcsec/pixel.  Shown at 3.69 and 9.39 arcsec/pixel.

Mount

Paramount MyT

Camera

SBIG STF-8300M Self Guiding Package w/ mono ST-i, using AstroDon E-Series LRGB filters.

Acquisition Data

9/12/2017 to 9/16/2017  Chino Valley, AZ with CCD Commander & CCDSoft. 

Exposure

Lum

480 min. (48 x 10 min. each)   Binned 1x1

RGB

600 min. (20 x 10 min. each)         "

 RGB combine ratios are 1.00, 0.96, 0.89

Software & Processing Notes

  • CCDSoft, CCDStack, PixInsight, Photoshop CS6

  • eXcalibrator v5.0 for (g:r) color balancing, using 223 stars from the SDSS-DR9 database.

  • PixInsight processing includes calibration, registering, stacking, RGB creation, gradient removal, non-linear stretching with HistogramTransformation.

  • Noiseware 5, a PhotoShop plug-in.

  • PhotoShop final touch-up includes background noise reduction.

Comment

North is to the top.

This beautiful structure is in the Taurus molecular cloud. It is about 450 light-years away towards the constellation Taurus, in the Orion Arm of our Milky Way galaxy.
Various dark nebulae accent the diagonal dust lane. The image  has three prominent dark regions that Edward Bernard identified and photographed in 1905. From the upper right to lower left they are B211, B217 and B216,

As one of the closest molecular clouds, this region is an ideal place to study the formation of stars.