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Contains:  Cocoon nebula, IC 5146
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Cocoon Nebula IC 5146, 


            Barry Wilson
Cocoon Nebula IC 5146

Cocoon Nebula IC 5146

Technical card

Resolution: 3210x2496

Dates:Aug. 27, 2017

Astrodon 5nm Ha: 7x1200" bin 1x1
Astrodon E-Series Blue filter: 11x300" bin 1x1
Astrodon E-Series Blue filter: 4x600" bin 1x1
Astrodon E-Series Green filter: 11x300" bin 1x1
Astrodon E-Series Green filter: 5x600" bin 1x1
Astrodon E-Series Red filter: 11x300" bin 1x1
Astrodon E-Series Red filter: 9x600" bin 1x1
Astrodon Luminance E-Series: 33x600" bin 1x1

Integration: 13.6 hours

Avg. Moon age: 5.72 days

Avg. Moon phase: 32.66% job: 1705526

RA center: 327.772 degrees

DEC center: 47.333 degrees

Pixel scale: 2.093 arcsec/pixel

Orientation: 91.742 degrees

Field radius: 1.182 degrees

Locations: Home observatory, Totnes, Devon, United Kingdom


This image is a combination of data from recently gathered over the last few weeks with an FSQ106 to that gathered two years ago with an FSQ85 - both captured with a QSI683 and Astrodon filters. In total it comprises nearly 14 hours of data; I do despair of gathering more data with the FSQ106 as the UK summer in Devon, UK, has been quite overcast.

PI did a good job of re-scaling the FSQ85 data and the colour calibration has been an experiment with the new PCC process. Nevertheless it was not easy to combine the data and there are some residual star alignment artefacts despite much experimentation with clamping threshold and algorithms. So pixel peeping will only suit the masochist :-). This is a slight crop resulting from the different framing between the two datasets.

I hope to gather some more LRGB data on the FSQ106 - this is part of a shared rig with Gnomus as we finalise testing of the complete setup (QSI683, GM1000HPS, Alnitak Flip-Flat, DragonFly plus all the peripherals) in my observatory ready for a remote setup at E-Eye. So thanks to Gnomus and I look forward to getting the rig placed in Spain later this year.



Barry Wilson
License: None (All rights reserved)

Sky plot

Sky plot


Cocoon Nebula IC 5146, 


            Barry Wilson

In these public groups

UK Astro-Imaging