Hemisphere:  Northern  ·  Contains:  56 Cyg  ·  57 Cyg  ·  IC 5070  ·  IC5070  ·  Pelican nebula  ·  The star 56Cyg  ·  The star 57Cyg
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IC-5067 (Pelican Nebula), 



    
        

            Joel Shepherd
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IC-5067 (Pelican Nebula)

Imaging telescopes or lenses: Skywatcher Esprit 80ED APO Triplet

Imaging cameras: Atik 460EX Mono

Mounts: Astro-Physics Mach1GTO

Guiding telescopes or lenses: Orion Deluxe Mini 50mm Guide Scope with Helical Focuser

Guiding cameras: Lodestar X2

Software: Sequence Generator Pro  ·  PixInsight 1.8

Filters: Astrodon 1.25" 3nm SII  ·  Astrodon 5nm H-alpha  ·  Astrodon 3nm OIII 1.25

Accessory: Skywatcher Field Flattener for Esprit 80


Dates:Aug. 27, 2018Aug. 28, 2018Sept. 2, 2018Sept. 3, 2018Sept. 4, 2018

Frames:
Astrodon 1.25" 3nm SII: 29x600" 0C bin 1x1
Astrodon 3nm OIII 1.25: 35x600" 0C bin 1x1
Astrodon 5nm H-alpha: 30x600" 0C bin 1x1

Integration: 15.7 hours

Avg. Moon age: 20.00 days

Avg. Moon phase: 66.48%

Bortle Dark-Sky Scale: 6.00


Astrometry.net job: 2374185

RA center: 20h 51' 22"

DEC center: +44° 9' 47"

Pixel scale: 2.062 arcsec/pixel

Orientation: 36.937 degrees

Field radius: 0.701 degrees


Resolution: 1920x1513

Locations: Home, Seattle, WA, United States

Data source: Backyard

Description

This was an amazing target in terms of the immensely strong signal of blue-ish area: at times I felt like I was working with plaster or paint, and not whisps of emitted photons. It proved to be very challenging though too. At the time, I was wrestling with guiding challenges, which I finally tracked down to the guide camera wiggling ever so slightly, only after ruling out practically every other cause. Auto-focus was (and continues to be) an imperfect science. A few of my flats were dubious, and so on. In processing, I ended up making four major efforts on it before finally getting to colors and intensity that I felt good about ... and still haven't figured out how to satisfactorily integrate a couple hours of RGB star data.

My friend @BrianSweeney suggested the target, and we also have some O-iii data that he collected from Phoenix (not used in this version). It was our first attempt at collaboration and one lesson learned was ... camera rotation matters! :-) So we may be shopping for rotators.

tl;dr: Surprisingly challenging all along the way, but worth the effort in the end.

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JoelShepherd
Joel Shepherd
License: Attribution Creative Commons
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IC-5067 (Pelican Nebula), 



    
        

            Joel Shepherd