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Contains:  Great Nebula in Orion, M 42, M 43, NGC 1973, NGC 1975, NGC 1976, NGC 1977, NGC 1980, NGC 1981, NGC 1982, The star 42Ori, The star 45Ori, The star θ1Ori, The star θ2Ori, The star ιOri
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M42 - Orion Nebula (Revisit with Nikon D500)

Technical card

Imaging telescopes or lenses: Takahashi FSQ-85EDP

Imaging cameras: Nikon D500

Mounts: Celestron Advanced VX

Guiding telescopes or lenses: Orion 50mm Guide Scope  ·  QHYCCD PoleMaster

Guiding cameras: Orion StarShoot AutoGuider

Focal reducers: Takahashi Flattener 1.01x

Software: ProDigital Software StarSpikes Pro 4  ·  Adobe Photoshop CC 2016  ·  Astro Pixel Processor  ·  Sequence Generator Pro  ·  PixInsight 1.8 Ripley  ·  Adobe Lightroom 2017

Accessory: Celestron SkySync GPS  ·  Kingdel NC860 (i7-8550U)

Dates:Jan. 4, 2019Jan. 5, 2019

39x180" ISO1600 bin 1x1
50x30" ISO1600 bin 1x1
50x10" ISO800 bin 1x1

Integration: 2.5 hours

Darks: ~40

Flats: ~40

Bias: ~50

Avg. Moon age: 28.56 days

Avg. Moon phase: 1.31%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 20.18

Temperature: -2.00

Basic astrometry details job: 3248594

RA center: 5h 35' 7"

DEC center: -5° 19' 12"

Pixel scale: 2.910 arcsec/pixel

Orientation: 4.474 degrees

Field radius: 1.335 degrees

Resolution: 1920x2688

Locations: TAS Atoka Dark Site, Atoka, Oklahoma, United States

Data source: Traveller


First time giving Astro-Modified Nikon D500 a "decent" treatment :) - this time, with FSQ-85EDP and riding a real astrophotography mount. Thought that I owe the D500 this experience with 2019's first shot.

This is the camera got me started on Astrophotography.

It's actually the "First-Light" event for the BabyQ. The flexible coupling to connect the AF motor had not arrived yet. So, back to the good old days with manual focus. I'd say with William Optics Bahtinov Mask and supported by Bahtinov Grabber, the focus was pretty accurate.

Pre-processing of Masters

- Calibration / Integration, Astro Pixel Processor
- HDR Composition, PixInsight
- DynamicCrop, PixInsight
- MultiscaleLinearTransformation (Denoise), PixInsight
- ScreenTransferFunction / HistogramTransformation, PixInsight.


- Final Touch-up, Photoshop



Min Xie
License: Attribution-NonCommercial Creative Commons

Sky plot

Sky plot


M42 - Orion Nebula (Revisit with Nikon D500), 


            Min Xie