Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  IC 443, IC 444, The star Propus (ηGem)
Getting plate-solving status, please wait...

Backyard - IC 443 - A Galactic Supernova Remnant

Technical card

Imaging telescopes or lenses: QHYCCD PoleMaster  ·  Takahashi FSQ-85EDP

Imaging cameras: ASI1600mm Pro

Mounts: Astro-Physics Mach1GTO CP3

Guiding telescopes or lenses: QHYCCD QHYOAG-M

Guiding cameras: QHYCCD QHY5II-M

Focal reducers: Takahashi Flattener 1.01x

Software: ProDigital Software StarSpikes Pro 4  ·  StarNet++  ·  Adobe Photoshop 2019 CC  ·  Astro Pixel Processor  ·  Sequence Generator Pro  ·  PixInsight 1.8 Ripley

Filters: Astrodon 3nm SII 31mm  ·  Astrodon 3nm OIII 31mm  ·  Astrodon 3nm Ha 31mm  ·  Astrodon E Series Gen II Blue 31mm  ·  Astrodon E Series Gen II Red 31mm  ·  Astrodon E Series Gen II Green 31mm

Accessory: PrimaLuceLab Sesto Senso Robotic Focusing Motor  ·  ZWO EFW  ·  Kingdel NC860 (i7-8550U)


Dates:Jan. 5, 2020Jan. 6, 2020Jan. 7, 2020Jan. 8, 2020

Frames:
Astrodon 3nm Ha 31mm: 82x300" (gain: 139.00) -20C bin 1x1
Astrodon 3nm OIII 31mm: 72x300" (gain: 139.00) -20C bin 1x1
Astrodon 3nm SII 31mm: 71x300" (gain: 139.00) -20C bin 1x1
Astrodon E Series Gen II Blue 31mm: 60x60" (gain: 0.00) -20C bin 1x1
Astrodon E Series Gen II Green 31mm: 60x60" (gain: 0.00) -20C bin 1x1
Astrodon E Series Gen II Red 31mm: 60x60" (gain: 0.00) -20C bin 1x1

Integration: 21.8 hours

Darks: ~40

Flats: ~40

Flat darks: ~40

Avg. Moon age: 10.89 days

Avg. Moon phase: 83.06%

Bortle Dark-Sky Scale: 9.00

Mean SQM: 17.96

Temperature: 10.86


Basic astrometry details

Astrometry.net job: 3248582

RA center: 6h 17' 47"

DEC center: +22° 30' 0"

Pixel scale: 2.371 arcsec/pixel

Orientation: 357.841 degrees

Field radius: 1.309 degrees


Resolution: 3309x2206

Locations: Backyard, Coppell, Texas, United States

Data source: Backyard

Description

RASA8 project hit a pause. The Chroma 5nm filters do not suit for F2.0 system at all. Now going back to the Astronomik 12nm filters as the F2.0 system narrowband solution. Waiting for ordering from Astronomik once confirmed.

Too much fun to image within 30 degrees of the bright moon. And of course, as poor as the SNR could be - especially the O3 channel. To my surprise, even Ha master got strong gradient because of the moon. Never did DBE for Ha master before. 🤣

But, lots of fun this time in color blending - with PixelMath boosting the super low SNR O3 channel. No Photoshop color match-making this time. Except the export, all done in PixInsight.

Pre-processing of Narrowband Masters

– Calibration / Integration, Astro Pixel Processor
– Deconvolution, PixInsight (Only for H-Alpha)
– MultiscaleLinearTransform (Denoise), PixInsight
– ScreenTransferFunction / HistogramTransformation, PixInsight.

Pre-processing of RGB Masters

– Calibration / Integration, Astro Pixel Processor
– Dynamic Background Extraction, PixInsight
– MorphologicalTransformation, PixInsight
– ScreenTransferFunction / HistogramTransformation, PixInsight.

RGB Combination

– LRGBCombination, PixInsight
– MorphologicalTransformation, PixInsight
– ScreenTransferFunction / HistogramTransformation, PixInsight.

Narrowband Combination

– PixelMath, PixInsight (Fun! Fun! Fun!)
– ScreenTransferFunction / HistogramTransformation, PixInsight.

Narrband & RGB Combination

– PixelMath, PixInsight (What layer blend?)
– Final Export, Photoshop

Comments

Author

mxcoppell
Min Xie
Like

Sky plot

Sky plot

Histogram

Backyard - IC 443 - A Galactic Supernova Remnant, 



    
        

            Min Xie