Hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble nebula  ·  M 52  ·  NGC 7538  ·  NGC 7635  ·  NGC 7654  ·  The star 4Cas
Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538, 



    
        

            Vikas Sahota
Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538
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Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)
Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538, 



    
        

            Vikas Sahota
Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538
Powered byPixInsight

Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Technical card

Imaging telescopes or lenses: Altair Astro 72edf deluxe

Imaging cameras: Altair Hypercam 183M PRO TEC

Mounts: DarkFrame Optics StellarDrive 6

Guiding telescopes or lenses: Altair Astro 60 mm guidescope

Guiding cameras: Altair GPCAM3 178M

Focal reducers: Altair Astro 0.80 Focal Reducer-Flattner

Software: PHD Guiding 2  ·  EQMOD EQAscom  ·  Adobe CS6  ·  AstroPixel Processor

Filters: Baader LRGB 2"

Accessory: Pegasus Astro Pocket Powerbox  ·  Pegasus Astro FocusCube


Dates:June 28, 2019June 29, 2019June 30, 2019July 1, 2019July 2, 2019July 4, 2019

Frames:
Baader B 2": 113x90" (gain: 381.00) -15C bin 1x1
Baader G 2": 51x180" (gain: 381.00) -15C bin 1x1
Baader L 2'': 677x45" (gain: 381.00) -15C bin 1x1
Baader R 2": 53x210" (gain: 381.00) -15C bin 1x1

Integration: 16.9 hours

Darks: ~50

Flats: ~50

Bias: ~200

Avg. Moon age: 22.88 days

Avg. Moon phase: 7.97%

Bortle Dark-Sky Scale: 6.00


Basic astrometry details

Astrometry.net job: 2784149

RA center: 23h 20' 30"

DEC center: +61° 38' 2"

Pixel scale: 2.318 arcsec/pixel

Orientation: 229.839 degrees

Field radius: 1.188 degrees


Resolution: 1824x1247

Locations: Backyard, Slough, Berkshire, United Kingdom

Data source: Backyard

Description

I was up for a go at bubble nebula and saw that I could manage to squeeze the Cassepoia star cluster and NGC7538 in there, making it worthwhile to spend some extra time imaging. I took a whole load of L's over the first three night amounting to around 9 hours, then almost the same again over the coming few days to gather the RGB data. After a couple of attempts combining the data, I decided to stick close to the results of APP's star calibration to get the overall looking good without messing up the stars too much. quite like it in the end, the bubble looks more natural than highly saturated.

NGC7635 The bubble nebula : The bubble is created by the stellar wind from the young, magnitude 8.3, massive central star

NGC7538 : Home to the biggest discovered protostar - 300x the size of the solar system!

NGC7654 , M52 Casseopia Salt-n-peper cluster : Discovered by Charles Messier on September 7, 1774

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Bubble Nebula NGC7635 , Casseopia Star Cluster NGC7654 and NGC7538, 



    
        

            Vikas Sahota