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



    
        

            Victor Van Puyenbroeck
NGC 7635 - Bubble Nebula
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NGC 7635 - Bubble Nebula

Technical card

Imaging telescopes or lenses: Teleskop-Service ONTC 8" f/4 Newton

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Sky-Watcher EQ6-R Pro

Guiding telescopes or lenses: Teleskop-Service ONTC 8" f/4 Newton

Guiding cameras: ZWO ASI120MM

Focal reducers: TS-Optics Coma Corrector GPU

Software: PHD2  ·  PixInsight  ·  EQASCOM  ·  Seqence Generator Pro

Accessory: ZWO Off Axis Guider  ·  ZWO EFW 8x31mm


Dates:Aug. 8, 2020

Frames:
Astrodon Tru-Balance 1.25" 3nm HA: 27x300" (gain: 200.00) -15C bin 1x1
Astrodon Tru-Balance 1.25" 3nm OIII: 27x300" (gain: 200.00) -15C bin 1x1

Integration: 4.5 hours

Darks: ~60

Flats: ~20

Flat darks: ~20

Avg. Moon age: 19.29 days

Avg. Moon phase: 78.58%

Bortle Dark-Sky Scale: 7.00

Temperature: 23.00


Basic astrometry details

Astrometry.net job: 3800891

RA center: 23h 20' 42"

DEC center: +61° 11' 16"

Pixel scale: 0.490 arcsec/pixel

Orientation: 269.692 degrees

Field radius: 0.204 degrees


Resolution: 2400x1800

Locations: Backyard, Herent, Belgium

Data source: Backyard

Description

Still experimenting with collimation, I can't get good stars near the edges of my sensor. Despite these flaws, I had a lot of fun with this target! I had one session on the Bubble Nebula where the center stars were shaped well and sharpness was good.

Instead of presenting the entire nebula as a medium-field shot, I decided to focus just on the bubble and completely ignored the distorted edges of my field. The data was drizzled and I and tried to tease out as much detail as possible. Rev. D shows a comparison between the result from my 8" telescope and the Hubble image.

Credits HST image: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

Comments

Revisions

  • Final
    NGC 7635 - Bubble Nebula, 



    
        

            Victor Van Puyenbroeck
    Original
  • NGC 7635 - Bubble Nebula, 



    
        

            Victor Van Puyenbroeck
    B
  • NGC 7635 - Bubble Nebula, 



    
        

            Victor Van Puyenbroeck
    C
  • NGC 7635 - Bubble Nebula, 



    
        

            Victor Van Puyenbroeck
    D

B

Description: Ha

Uploaded: ...

C

Description: OIII

Uploaded: ...

D

Description: Comparison to HST image

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 7635 - Bubble Nebula, 



    
        

            Victor Van Puyenbroeck