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Hemisphere:  Northern
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Propeller Nebula, DWB 111/119 (Simeis 57), SHO, 


            Nico Carver
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Propeller Nebula, DWB 111/119 (Simeis 57), SHO

Imaging telescopes or lenses: Stellarvue SVQ86

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Skywatcher EQ6-R Pro  ·  Orion Atlas EQ-G

Guiding telescopes or lenses: Astromania 60mm Guide Scope

Guiding cameras: ZWO ASI290MM Mini

Software: Photoshop CS6  ·  PHD2 Guiding  ·  Main Sequence Software Sequence Generator Pro  ·  Pixinsight 1.8  ·  Nikita Misiura Starnet++  ·  DC-3 Dreams Pinpoint  ·  Cartes du Ciel

Filters: Astrodon Tru-Balance 1.25" 5nm Ha  ·  Astrodon Tru-Balance 1.25" 3nm S2  ·  Astrodon Tru-Balance 1.25" 3nm OIII

Accessory: QHYCCD Polemaster  ·  Shoestring Astronomy EQDIR

Dates:July 3, 2018Oct. 20, 2018Oct. 8, 2020

Astrodon Tru-Balance 1.25" 3nm OIII: 10x300" (gain: 200.00) -15C bin 1x1
Astrodon Tru-Balance 1.25" 3nm OIII: 35x600" (gain: 200.00) -15C bin 1x1
Astrodon Tru-Balance 1.25" 3nm S2: 27x300" (gain: 200.00) -15C bin 1x1
Astrodon Tru-Balance 1.25" 5nm Ha: 29x300" (gain: 200.00) -15C bin 1x1

Integration: 11.3 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 16.99 days

Avg. Moon phase: 74.77%

Bortle Dark-Sky Scale: 8.25 job: 3918748

RA center: 20h 17' 3"

DEC center: +43° 29' 37"

Pixel scale: 1.014 arcsec/pixel

Orientation: -29.976 degrees

Field radius: 0.713 degrees

Resolution: 3298x3840

Locations: Backyard, Newark, Delaware, United States; Sawin Observatory, Hockessin, Delaware, United States; Backyard, Somerville, MA, United States; Aldrich Observatory Field, Oakham, MA, United States

Data source: Traveller


Another SHO test from the big mosaic. This is a field I've returned to a number of times to test new ideas and skills in processing. This latest image was inspired by Andy 01's recent talk on the Astro imaging channel and Eric Coles' recent SHO images with their soft, colorful look.

Let me know what you think!

Clear skies, Nico



Nico Carver
License: None (All rights reserved)

Sky plot

Sky plot


Propeller Nebula, DWB 111/119 (Simeis 57), SHO, 


            Nico Carver