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Contains:  Flaming Star nebula, IC 405, The star 14Aur, The star 16Aur, The star 19Aur
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Backyard - IC405 – Flaming Star Nebula, 



    
        

            Min Xie
Backyard - IC405 – Flaming Star Nebula
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Backyard - IC405 – Flaming Star Nebula

Technical card

Imaging telescopes or lenses: Takahashi FSQ-85EDP

Imaging cameras: ASI1600mm Pro

Mounts: Astro-Physics Mach1GTO CP3

Guiding telescopes or lenses: QHYCCD QHYOAG-M

Guiding cameras: ZWO ASI120mm-Mini

Focal reducers: Takahashi Reducer-QE 0.73x

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:Nov. 17, 2019Nov. 18, 2019Nov. 19, 2019Nov. 23, 2019Nov. 24, 2019Nov. 30, 2019Dec. 1, 2019Dec. 7, 2019Dec. 8, 2019

Frames:
Astrodon 3nm Ha 31mm: 120x300" (gain: 139.00) -20C bin 1x1
Astrodon 3nm SII 31mm: 120x300" (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: 23.0 hours

Darks: ~40

Flats: ~40

Flat darks: ~40

Avg. Moon age: 16.17 days

Avg. Moon phase: 46.56%

Bortle Dark-Sky Scale: 9.00

Mean SQM: 17.96

Temperature: 5.78


Basic astrometry details

Astrometry.net job: 3248568

RA center: 5h 16' 2"

DEC center: +33° 42' 50"

Pixel scale: 2.356 arcsec/pixel

Orientation: 359.626 degrees

Field radius: 1.696 degrees


Resolution: 2990x4234

Locations: Backyard, Coppell, Texas, United States

Data source: Backyard

Description

... Sorry, re-upload, deleted the original upload by mistake and lost all the comments! 😶 ...

First all-backyarder into the winter of 2019. Good thing is that -20C sensor temperature is back. It’s also my first IC405 attempt. Plan changed couple of times from all narrowband to HaRGB, then back to backyard project again after failed attempt to capture the RGB data at Atoka. The 0.73x QE Reducer sure generated enough halos on the RGB light frames for me to give up the precious dark site data.

I was a little surprised to see how much blue signal could be extracted from the 36 minutes of blue channel light frames imaged from the white zone backyard. Maybe the reflection of blue light is that strong at the core of IC 405, or maybe one more night on the blue channel from the backyard could bring back more contrast and details… Well, I am done with it and the moon is bright.

This project also got interrupted multiple time by dark site visits and RASA8 test sessions. More focus will be shifted to RASA8 from now on.

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

– SHO-AIP Script, PixInsight
– ScreenTransferFunction / HistogramTransformation, PixInsight.

Narrband & RGB Combination

– Star adjustment, Photoshop/StarSpike Pro V4
– Final Touch-up, Photoshop

Comments

Author

mxcoppell
Min Xie
License: Attribution-NonCommercial Creative Commons
3965
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Backyard - IC405 – Flaming Star Nebula, 



    
        

            Min Xie