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Contains:  Bubble nebula, NGC 7635
Getting plate-solving status, please wait...
NGC7635 - Bubble Nebula, 


            Peter Goodhew
NGC7635 - Bubble Nebula

NGC7635 - Bubble Nebula

Technical card

Resolution: 4124x2729

Dates:July 29, 2018

Astrodon 5nm H-Alpha filter: 57x1200" bin 1x1
Astrodon Blue: 12x300" bin 1x1
Astrodon Green: 10x300" bin 1x1
Astrodon OIII 3 nm: 30x1200" bin 1x1
Astrodon Red: 10x300" bin 1x1

Integration: 31.7 hours

Avg. Moon age: 16.25 days

Avg. Moon phase: 97.53% job: 2190306

RA center: 350.184 degrees

DEC center: 61.187 degrees

Pixel scale: 0.533 arcsec/pixel

Orientation: 110.206 degrees

Field radius: 0.366 degrees

Locations: e-Eye, Fregenal de la Sierra, Extramadura, Spain

Data source: Own remote observatory

Remote source: IC Astronomy Observatories


I've been experimenting at trying to tease out the highest resolution I can from my APM TMB 6" Refractor. To do this I've adopted a few techniques:

1. Having rejected poor subs I then examined each sub under high magnification, selecting only the very sharpest for processing fine detail (in this case it was 11 out of 57 Ha subs, and 9 out of 30 OIII subs). All subs were used for the background and background nebulosity.

2. Applying 200 iterations of deconvolution to remove as much blurring as possible.

3. Applying selective sharpening using a combination of High Pass filtering, Smart Sharpening, and Unsharp Mask.



Peter Goodhew
License: None (All rights reserved)

Sky plot

Sky plot


NGC7635 - Bubble Nebula, 


            Peter Goodhew