Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5422  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  NGC 5473  ·  NGC 5474  ·  NGC 5477  ·  NGC 5484  ·  NGC 5485  ·  NGC 5486  ·  Pinwheel galaxy
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M101 - The Pinwheel Galaxy, JDJ
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M101 - The Pinwheel Galaxy

Getting plate-solving status, please wait...
M101 - The Pinwheel Galaxy, JDJ
Powered byPixInsight

M101 - The Pinwheel Galaxy

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Description

Imaged M101, The Pinwheel Galaxy, as the last stop on my tour of spring galaxy targets. This one in particular was a challenge from my red zone backyard 10 miles north of Washington DC. Added a new light pollution filter, longer exposures, and guided exposures with dithering to my deep sky imaging toolkit to capture these targets and looking forward to applying those tools to my fall/winter imaging...

NBRGB Version (final):

NBRBG image generated from OSC RGB data and H-alpha NB data using the Pixinsight NBRGB combination script. Red was augmented by H-alpha data with a scale factor of 5.0.

RGB Version:

Captured OSC RGB images using an LPS-D1 filter on the night of May 24, 2019. Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Stacked 21 subs (240 sec at ISO 200) for a total integration time of ~1.5 hours. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, Background Neutralization, Color Calibration, SCNR, stretched using Arcsinh then Histogram Transformation Tool, Curves Transformation, HDR transform, Local histogram transform, and Color Saturation boost.

H-alpha NB Version:

Captured narrow-band H-alpha images using an Optolong 12nm Ha filter on the night of June 22, 2019. Processiing in PixInshight. Calibrated using batch pre-processing (BPP) script using darks, bias, and flats. Extracted red channel. Registered and stacked using StarAlighment and Integration. Total integration time of ~2 hours using 21 subs at ISO400x360 sec. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT noise reduction, stretched using Histogram Transformation Tool, Curves Transformation, TGVDenoise, HDR Multiscale Transform, Local Histogram Equalization, and Morphological Transformation.

Comments

Revisions

  • M101 - The Pinwheel Galaxy, JDJ
    Original
  • M101 - The Pinwheel Galaxy, JDJ
    C
  • Final
    M101 - The Pinwheel Galaxy, JDJ
    D

C

Description: Narrowband H-alpha data

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D

Description: NBRGB Version

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Sky plot

Sky plot

Histogram

M101 - The Pinwheel Galaxy, JDJ

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