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:  7 eta Gem, IC 443, IC443, Sh2-248, Tejat Prior, The star Propus (ηGem)
Getting plate-solving status, please wait...
IC443 - Jellyfish Nebula, 



    
        

            Nico Carver
Powered byPixInsight

IC443 - Jellyfish Nebula

Imaging telescopes or lenses: Sky-Watcher 80ED

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Orion Atlas EQ-G

Guiding telescopes or lenses: Orion 50mm Guide Scope with helical focusing

Guiding cameras: QHYCCD 5L-II M

Focal reducers: Sky-Watcher 0.85 Focal reducer/flattener

Software: Photoshop CS6  ·  PHD2 Guiding  ·  Main Sequence Software Sequence Generator Pro  ·  Pixinsight 1.8  ·  Cartes du Ciel

Filters: Astrodon Tru-Balance 1.25" 5nm Ha  ·  Astrodon Tru-Balance 1.25" 3nm OIII

Accessory: Shoestring Astronomy EQDIR


Dates:Feb. 5, 2017Feb. 26, 2017March 16, 2017

Frames:
Astrodon Tru-Balance 1.25" 3nm OIII: 20x300" (gain: 139.00) -20C bin 1x1
Astrodon Tru-Balance 1.25" 5nm Ha: 53x300" (gain: 139.00) -20C bin 1x1

Integration: 6.1 hours

Darks: ~20

Avg. Moon age: 18.88 days

Avg. Moon phase: 50.21%

Bortle Dark-Sky Scale: 8.00

Temperature: 10.00


Astrometry.net job: 1498861

RA center: 6h 17' 2"

DEC center: +22° 35' 12"

Pixel scale: 1.502 arcsec/pixel

Orientation: -74.510 degrees

Field radius: 0.817 degrees


Resolution: 2888x2648

Locations: Backyard, Newark, Delaware, United States

Data source: Backyard

Comments

Author

2ghouls
Nico Carver
License: None (All rights reserved)
5504
Like

Revisions

  • IC443 - Jellyfish Nebula, 



    
        

            Nico Carver
    Original
  • IC443 - Jellyfish Nebula, 



    
        

            Nico Carver
    B
  • IC443 - Jellyfish Nebula, 



    
        

            Nico Carver
    C
  • Final
    IC443 - Jellyfish Nebula, 



    
        

            Nico Carver
    D

B

Description: First try at combining Ha and OIII data. Used Edoardo Luca Radice's PixInisght variation on the Steve Cannistra method for bicolor composition.

C

Description: More natural looking, different methods used for processing.

D

Description: Added another 1.5 hours of Ha. Tried to keep what was working in version "C", but improve the stars and chrominance noise reduction. Also, noticed some dark ringing around the stars in the bright shell of the jellyfish in version C, which I eliminated in D. Might be done for this winter, but next winter I would like to extend this to μ Gem and make this a 2-panel mosaic. Comments welcome!

Sky plot

Sky plot

Histogram

IC443 - Jellyfish Nebula, 



    
        

            Nico Carver