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Contains:  Extremely wide field
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Milky Way Core Region, 



    
        

            JDJ
Milky Way Core Region
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Milky Way Core Region

Technical card

Imaging telescopes or lenses:Nikon 50 f/1.8G

Imaging cameras:Nikon D5300 Full Spectrum Modified

Filters:IDAS HEUIB-Ⅱ (Nikon Clip)


Dates:July 31, 2019

Frames: 46x5" bin 0x0

Integration: 0.1 hours

Avg. Moon age: 28.81 days

Avg. Moon phase: 0.58%


Basic astrometry details

Astrometry.net job: 2896334

RA center: 18h 9' 57"

DEC center: -24° 51' 46"

Pixel scale: 15.531 arcsec/pixel

Orientation: 345.653 degrees

Field radius: 15.015 degrees


Resolution: 3806x5827

Data source: Traveller

Description

I imaged the Milky Way from the amazingly dark skies on the Hawaiian islands of Kauai and the Big Island at the end of July and beginning of August.

This is the seventh in a series of images from the Big Island where we stayed along the Kohala Coast on the northwestern part of the island looking out over the Pacific Ocean. This is a closer view of the Milky Way core region in Sagittarius taken with a 50 mm prime lens, which has an equivalent focal length of ~75 mm on the Nikon D5300 with its APSC sensor. These shots were from a fixed mount, so at this focal length I had to shoot lots of short exposures to prevent star trailing. The Lagoon Nebula (M8) is the bright H-alpha region at the center of the image. Above and to the right is the Triffid Nebula (M20). The two bright H-alpha regions at the top of the image are the Eagle Nebula (M16) and the Omega Nebula (M17).

Imaged using a Nikon D5300 (full spectrum modified), IDAS HEUIB-II (H-α Enhanced UV IR Blocking) filter, and 14 mm Rokinon lens at F1.8. Exposures were 5 seconds at ISO-6400.

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Stacked 46 subs for a total integration time of ~4 minutes. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, Background Neutralization, Color Calibration, SCNR, stretched using Histogram Transformation Tool, Curves Transformation, HDR transform, Local histogram transform, and Color Saturation boost.

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JDJ
JDJ
License: None (All rights reserved)
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Milky Way Core Region, 



    
        

            JDJ