Hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  NGC 6425
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A Rosebud in Scorpio: Sharpless SH2-15, 



    
        

            Andy 01
A Rosebud in Scorpio: Sharpless SH2-15
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A Rosebud in Scorpio: Sharpless SH2-15

Technical card

Imaging telescopes or lenses: Takahashi TOA-130 APO Refractor

Imaging cameras: QSI 6162 monochrome

Mounts: Takahashi NJP Temma-2

Guiding cameras: Starlight Xpress Lodestar Off Axis Guider

Software: Adobe Photoshop 2020  ·  Sky Safari Pro  ·  PHD2 Guiding 2.6.6 PHD2  ·  Topaz Denoise DeNoise  ·  Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions  ·  Nik Software, Inc. Nik Filters

Filters: Chroma Blue  ·  Chroma Green  ·  Chroma Red  ·  Chroma Luminance  ·  Chroma Ha 5nm Chroma Ha

Accessory: Kendrick Standard Dual Channel Controller


Dates:July 17, 2020

Frames:
Chroma Blue: 10x180"
Chroma Green: 10x180"
Chroma Ha 5nm Chroma Ha: 1200x12"
Chroma Luminance: 24x300"
Chroma Red: 10x180"

Integration: 7.5 hours

Avg. Moon age: 26.28 days

Avg. Moon phase: 11.46%

Bortle Dark-Sky Scale: 6.00


Basic astrometry details

Astrometry.net job: 3680750

RA center: 17h 48' 54"

DEC center: -31° 19' 26"

Pixel scale: 2.223 arcsec/pixel

Orientation: 179.530 degrees

Field radius: 0.844 degrees


Resolution: 1863x2000

Locations: Burwood, Melbourne, Victoria, Australia

Data source: Backyard

Description

Sharpless Sh2-15

I spotted this region on Galaxy map & not having seen images of this nebula, I thought it might make an interesting target. (Post production research unearthed two published images, one here on AB by by Gary Imm & another on the Sharpless catalogue site by Dean Salman.)

The region is ionised by the star HD 161853, the brightest white star at the top of the image. In the centre is an interesting band of dust silhouetted against the Ha region.
The object is a Ha region located 5000 light years away in Scorpius, it's also known as RCW 134 and Gum 69.

Two star clusters are visible in the image. NGC 6425, a bright colourful open cluster of 25 stars located 2500 light years away, in the top left corner. Pixel peepers and 'Where’s Wally' fans should try to spot Terzan 6 - visible as a tiny faint orange smudge on the right hand side of the image around 3 o'clock. (Look just below right of the small dust cloud.) This globular cluster is 25,000 light years away!

10x180 sec R,G&B
24x 300 sec LUM
12x 1200 sec 5nm Ha

Taken from my light polluted suburban backyard in 'Lockdown Central’ - Melbourne, Australia.

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A Rosebud in Scorpio: Sharpless SH2-15, 



    
        

            Andy 01