Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  Gem A  ·  IC 443  ·  The star Propus (ηGem)
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IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
IC 443 - Jellyfish Nebula in HaRGB
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IC 443 - Jellyfish Nebula in HaRGB

Getting plate-solving status, please wait...
IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
IC 443 - Jellyfish Nebula in HaRGB
Powered byPixInsight

IC 443 - Jellyfish Nebula in HaRGB

Technical card

Imaging telescopes or lenses: Sky-Watcher ED 100 Black Diamond

Imaging cameras: ZWO ASI294MC Pro

Mounts: Sky-Watcher AZ-EQ6 PRO

Guiding telescopes or lenses: QHYCCD miniGuideScope

Guiding cameras: QHYCCD QHY 5-II

Focal reducers: Skywatcher 0.85x Reducer ED100 Reducer

Software: Starnet ++  ·  Astro Photograhy Tool  ·  DeepSkyStacker  ·  PixInsight 1.8.7 Ripley  ·  PHD2 Guiding  ·  Adobe Photoshop CC 2017 Photoshop CC 2017

Filters: Baader Moon and Skyglow Filter  ·  Baader 7nm Ha

Accessory: Pegasus Astro Pocket Powerbox


Dates:March 25, 2020April 17, 2020

Frames:
Baader 7nm Ha: 108x300" (gain: 120.00) 0C
Baader Moon and Skyglow Filter: 120x120" (gain: 120.00) 0C

Integration: 13.0 hours

Darks: ~30

Flats: ~20

Avg. Moon age: 12.74 days

Avg. Moon phase: 13.54%

Bortle Dark-Sky Scale: 7.00


Basic astrometry details

Astrometry.net job: 3492949

RA center: 6h 17' 25"

DEC center: +22° 26' 2"

Pixel scale: 1.215 arcsec/pixel

Orientation: 134.114 degrees

Field radius: 0.698 degrees


Resolution: 3220x2600

Locations: Home observatory, Nicosia, Nicosia, Cyprus

Data source: Backyard

Description

Jellyfish Nebula - IC 443
The remnant of a cosmic explosion
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The Jellyfish Nebula is a Type II supernova remnant: when a massive star (8-12x the mass of our Sun in this case) reaches the end of its life, its core collapses and then explodes ('supernova') producing a shockwave which pushes out most of the star's material.
This peculiar structure was created by such an explosion ~5,000 light years away, between 3,000-30,000 years ago and has a diameter of ~70 light years across.
The ejected material from the supernova interacts with the surrounding molecular cloud and is ionized by radiation from nearby stars.
The bright star on the top left is Propus, which is much closer to us than the nebula.

A very difficult target to image from a light-polluted area + it was very low in the West right after dusk during the imaging period, in March-April, but I am happy with the result.

This was also the very first result with my new mount: the Sky-Watcher AZ-EQ6 GT Pro!
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Total imaging time: 13 hours (4 hours in colour, 9 hours in H-alpha)
Telescope: Sky-Watcher Evostar ED100 Black Diamond
Camera: ZWO ASI294MC Pro
Mount: AZ-EQ6 Pro

Comments

Revisions

  • IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
    Original
  • IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
    B
  • IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
    C
  • Final
    IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou
    D

B

Description: Some additional background neutralization and noise reduction

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C

Description: Some background adjustments

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D

Description: Topaz Denoise for smoother background

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Sky plot

Sky plot

Histogram

IC 443 - Jellyfish Nebula in HaRGB, 



    
        

            Orestis Pavlou