Hemisphere:  Southern  ·  Contains:  NGC 7424
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NGC 7424 - Spiral Galaxy in Grus, 


            Rodney Watters
NGC 7424 - Spiral Galaxy in Grus, 


            Rodney Watters

NGC 7424 - Spiral Galaxy in Grus

Technical card

Imaging telescopes or lenses: Tak TSA120

Imaging cameras: QSI 683 ws-8

Mounts: EQ8

Guiding telescopes or lenses: Tak TSA120

Guiding cameras: Starlight Xpress Lodestar x2

Focal reducers: Takahashi TOA Reducer .75x

Software: Pixinsight 1.8  ·  Sequence Generator Pro

Filters: Astronomik Ha 1.25" 6nm  ·  Astronomik Red  ·  Astronomik Blue  ·  Astronomik Green  ·  Astronomik Luminance

Dates:Sept. 9, 2018Sept. 10, 2018Sept. 11, 2018Sept. 12, 2018Sept. 13, 2018Oct. 12, 2020Oct. 13, 2020

Astronomik Blue: 49x600" -20C bin 1x1
Astronomik Green: 46x600" -20C bin 1x1
Astronomik Ha 1.25" 6nm: 35x1800" -20C bin 1x1
Astronomik Luminance: 65x600" -20C bin 1x1
Astronomik Red: 59x600" -20C bin 1x1

Integration: 54.0 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 12.79 days

Avg. Moon phase: 10.41%

Bortle Dark-Sky Scale: 3.00

Basic astrometry details

Astrometry.net job: 4035888

RA center: 22h 56' 24"

DEC center: -40° 53' 52"

Pixel scale: 0.823 arcsec/pixel

Orientation: 266.774 degrees

Field radius: 0.499 degrees

Resolution: 3178x2991

Locations: Glanmire Home Observatory, Bathurst, NSW, Australia

Data source: Backyard


NGC 7424, a spiral galaxy located in the constellation of Grus approximately 37.5 million light years away. Data for this object was collected over two years, not because I planned to but because I forgot about the data that I collected in 2018 until I found it again in 2020 lurking about on my hard drive. By lucky happenstance it just happened to be the right time of year to start imaging the object again so I kept going to collect more data. This was fortunate because NGC 7424 is rather small in the field of view on my imaging set up and by capturing more data this enabled me to use drizzle integration in post processing. This allowed me to crop in to the main subject without losing too much resolution.

Because of my generous field of view (1.5d x 1d), I had the opportunity to try a slightly different composition here so have deliberately placed the galaxy in a commanding position in the corner of the frame. The remaining field is speckled with bright stars of various colours and numerous galaxies. which contribute well to the overall scene. The mouse over shows some of the many small galaxies there are that populate this busy field.



Rodney Watters
License: None (All rights reserved)


  • Final
    NGC 7424 - Spiral Galaxy in Grus, 


            Rodney Watters
    NGC 7424 - Spiral Galaxy in Grus, 


            Rodney Watters

Sky plot

Sky plot


NGC 7424 - Spiral Galaxy in Grus, 


            Rodney Watters

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