Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  IC 410  ·  IC410  ·  NGC 1893  ·  NGC1893  ·  Sh2-236
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The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
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The Tadpole Nebula (IC410)

Getting plate-solving status, please wait...
The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
Powered byPixInsight

The Tadpole Nebula (IC410)

Imaging telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Imaging cameras: ZWO ASI1600MM Pro

Mounts: Astro-Physics Mach-1 GTO CP4

Guiding telescopes or lenses: Teleskop Service ONTC 10" f4 Newton

Guiding cameras: Starlight Xpress Ultrastar Mono

Software: Photoshop CC  ·  PIXINSIGHT 1.8  ·  Seqence Generator Pro  ·  PHD2 Guiding PHD2 v2.6.5

Filters: Astrodon Narrowband 3nm SII  ·  Astrodon Narrowband 3nm Ha  ·  Astrodon Narrowband 3nm OIII

Accessory: QHYCCD QHYCFW3-M


Dates:Dec. 5, 2018Dec. 6, 2018Dec. 7, 2018Dec. 8, 2018Dec. 25, 2018Jan. 13, 2019

Frames:
Astrodon Narrowband 3nm Ha: 36x360" (gain: 139.00) bin 1x1
Astrodon Narrowband 3nm Ha: 19x300" (gain: 139.00) -20C bin 1x1
Astrodon Narrowband 3nm OIII: 47x300" (gain: 139.00) -20C bin 1x1
Astrodon Narrowband 3nm OIII: 1x360" (gain: 139.00) -20C bin 1x1
Astrodon Narrowband 3nm SII: 23x360" (gain: 139.00) -20C bin 1x1
Astrodon Narrowband 5nm SII: 19x300" (gain: 139.00) -20C bin 1x1

Integration: 13.1 hours

Darks: ~40

Flats: ~20

Flat darks: ~40

Bias: ~100

Avg. Moon age: 13.73 days

Avg. Moon phase: 22.89%

Bortle Dark-Sky Scale: 5.00


Astrometry.net job: 2578051

RA center: 5h 22' 46"

DEC center: +33° 21' 14"

Pixel scale: 0.910 arcsec/pixel

Orientation: -173.652 degrees

Field radius: 0.508 degrees


Resolution: 3150x2499

Data source: Backyard

Description

The Tadpole Nebula is an emission nebula in the constellation Auriga. The Tadpoles proper are rich in hydrogen and sulphur emissions and stand out against a background of mostly oxygen signal.

To create the starless version for processing of the narrowband data, I used the code Starnet by Nikita Misiura, folowed by clean-up in Photoshop CC. Reference: https://www.astrobin.com/339099/

Version A: Wide crop of the IC410 nebula region
Version B: Tight crop of the Tadpoles
Version C: Starless image of IC410
Version G: No tone mapping. I decided to reprocess the data and was a more natural palette of colors starting from cross-blended SHO.

All data acquired with ZWO ASI1600MM Pro, Gain=139, Offset=50. 75% of acquired data was retained for processing (discarded subs were eliminated due to bad seeing or wind).

Comments

Revisions

    The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
    Original
    The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
    B
    The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
    C
  • Final
    The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli
    G

B

Description: Tight crop around the Tadpoles.

Uploaded: ...

C

Description: Starless interpretation of IC410.

Uploaded: ...

G

Description: Reprocessed the data without tone mapping

Uploaded: ...

Sky plot

Sky plot

Histogram

The Tadpole Nebula (IC410), 



    
        

            Luca Marinelli