Hemisphere:  Southern  ·  Constellation: Carina (Car)  ·  Contains:  NGC 3496  ·  NGC 3503  ·  NGC 3532  ·  NGC 3572
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NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01
NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB
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NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB

Getting plate-solving status, please wait...
NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01
NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB
Powered byPixInsight

NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB

Technical card

Imaging telescopes or lenses: StellarVue SV70T

Guiding cameras: Starlight Xpress Lodestar Off Axis Guider

Software: StarTools 1.3.5RC Startools 1.3.5

Filters: Astrodon Ha 1.25 3nm  ·  Astrodon O-III 3nm  ·  Astrodon S2 3nm

Accessory: Kendrick Standard Dual Channel Controller


Dates:March 1, 2017

Frames:
Astrodon Gen2E Luminance: 6x900" (1h 30')
Astrodon Ha 1.25 3nm: 18x1800" (9h)
Astrodon O-III 3nm: 8x1800" (4h)
Astrodon S2 3nm: 8x1800" (4h)

Integration: 18h 30'

Flats: 15

Flat darks: 10

Avg. Moon age: 3.06 days

Avg. Moon phase: 10.26%


Basic astrometry details

Astrometry.net job: 1478279

RA center: 11h06m52s

DEC center: -59°0921

Pixel scale: 3.290 arcsec/pixel

Orientation: -4.560 degrees

Field radius: 1.691 degrees


Resolution: 1824x2254

Locations: Burwood, Melbourne, Victoria, Australia

Description

Here we have NGC 3532, very near it's much more famous and well documented neighbour the Eta Carina Nebula (NGC 3372). It's a beautiful cluster to observe visually, but much more challenging to do it justice in a photograph!

I've taken this from my backyard in suburban Melbourne, Australia, during an unprecedented run of 5 clear nights during new moon. It started off as straight narrowband, but while there is plenty of Ha, there is less O3 & S2 to make a balanced HST palatte image. So I've included the IDAS filter into the image train and attempted to blend the NB data with LRGB from light pollutionville.

Ha 8hrs - 30min subs

O3 4hrs

S2 4hrs

LRGB 6x20min subs ea = 4hrs

total Integration time 20hrs.

Processing the LRGB was an interesting challenge to bring back the star colours, even when using the IDAS filter. So lots of photoshop technique was used here. I then added back the Ha, to make HaRRGB, then blended back in the O3 & S2 using HST mapping.

Finished with NIK filters for overall colour aesthetics and seasoned to taste.

Thanks for looking, comments welcome!

Andy

Comments

Revisions

  • Final
    NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01
    Original
  • NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01
    B
  • NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01
    C

B

Description: Tweaked star colours to increase the cyan/blues & reduced star sizes for a more 3D effect. Andy

Uploaded: ...

C

Description: Reprocessed, extracted more Ha detail from the background and redid the RGB stars - an overall improvement :)

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 3532 - Wishing Well Cluster & friends in Ha O3 S2 LRGB, 



    
        

            Andy 01