Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  NGC 7635  ·  Sh2-162
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Bubble Nebula (SOH), 


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Getting plate-solving status, please wait...
Bubble Nebula (SOH), 


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Imaging telescopes or lenses: Planewave CDK14

Imaging cameras: Finger Lakes Instruments Proline 16803

Mounts: Astro-Physics 1600 with Absolute Encoders 1600GTO

Guiding telescopes or lenses: Planewave CDK14

Guiding cameras: ZWO ASI174MM

Software: Starkeeper Voyager  ·  Pleaides Astrophoto PixInsight 1.8 Ripley  ·  PHD2

Filters: Astrodon Ha  ·  Astrodon S  ·  Astrodon O

Accessory: Innovations Foresight ONAG

Dates:July 1, 2021July 2, 2021July 3, 2021July 4, 2021July 5, 2021July 6, 2021July 7, 2021July 8, 2021July 9, 2021July 10, 2021July 11, 2021July 12, 2021

Astrodon Ha: 33x900" (8h 15') -20C bin 1x1
Astrodon O: 39x900" (9h 45') -20C bin 1x1
Astrodon S: 41x900" (10h 15') -20C bin 1x1

Integration: 28h 15'

Darks: 40

Flats: 48

Bias: 40

Avg. Moon age: 19.40 days

Avg. Moon phase: 17.13%

RA center: 23h20m47s.486

DEC center: +61°0931.44

Pixel scale: 0.727 arcsec/pixel

Orientation: -87.951 degrees (flipped)

Field radius: 0.479 degrees

More info:Open 

Resolution: 3368x3332

Data source: Own remote observatory

Remote source: Sierra Remote Observatories


The Bubble Nebula, NGC 7635 is a HII region where the stellar wind from a hot star how blow out a gas free region around it.


the H, O and S masters:

dynamic crop

MLT noise reduction


linear fit (on O and S to H)

channel combination (SOH)

on the SOH:

SCNR on a large greenish star halo

TGV Denoise

HT stretch

curves (contrast & color desaturation)

Adam block's star reduction

adv sharpening

I ended up doing something on this I've never done before and that was actually desaturating the color slightly. This helped the purple gas stand out a bit more from the background while still keeping it appearing diffuse.


Sky plot

Sky plot


Bubble Nebula (SOH),