Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Orion Nebula  ·  Lower Sword  ·  M 42  ·  M 43  ·  Mairan's Nebula  ·  NGC 1973  ·  NGC 1975  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1982  ·  Orion Nebula  ·  The star 42Ori  ·  The star 45Ori  ·  The star θ1Ori  ·  The star θ2Ori  ·  The star ιOri  ·  the Running Man Nebula
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M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray
M43/42 - Santa and his sleigh?
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M43/42 - Santa and his sleigh?

Getting plate-solving status, please wait...
M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray
M43/42 - Santa and his sleigh?
Powered byPixInsight

M43/42 - Santa and his sleigh?

Technical card

Imaging telescopes or lenses: William Optics Zenithstar II 80 ED

Imaging cameras: Meade DSI 3 Pro

Mounts: Meade LX6 premier with 'smartdrive'

Guiding telescopes or lenses: Meade 8x50mm Finder/Guider

Guiding cameras: Orion Starshoot autoguider

Focal reducers: Meade f3.3 focal reducer/field flattener Meade Focal reducer

Software: SiliconFields / Ivo Jager StarTools v1.6  ·  Stark Labs Nebulosity v3  ·  PHD2 Guiding V 2.6  ·  Meade Envisage V4.05

Filters: Meade LRGB 1.25"

Accessory: Finder guider 8x50 Finder Scope


Dates:Dec. 24, 2020

Frames:
Meade Blue Filter for CCD: 68x15" (17')
Meade Green Filter for CCD: 20x15" (5')
Meade RGB-IR Cut 1.25": 32x15" (8')
Meade RGB-IR Cut 1.25": 24x30" (12')
Meade Red Filter for CCD: 36x15" (9')

Integration: 51'

Darks: ~37

Flats: ~25

Avg. Moon age: 9.61 days

Avg. Moon phase: 72.82%

Bortle Dark-Sky Scale: 4.00

Temperature: -2.00


Basic astrometry details

Astrometry.net job: 4463371

RA center: 5h 35' 32"

DEC center: -5° 19' 22"

Pixel scale: 4.360 arcsec/pixel

Orientation: 91.021 degrees

Field radius: 0.997 degrees


Resolution: 1334x965

Locations: Home 'observatory' (Bortle 5), Derbyshire, United Kingdom

Data source: Backyard

Description

While you were all soundly sleeping, Santa (aka the running man) and his sleigh were visible late on Christmas eve crossing the SW skies.

I think I have now completed my refractor set up, with a 5mm extension ring to optimise my focal reduction - maximising the image scale and minimising star distortion. At a little under an hour of integration, I am pleased to have captured these nebulae in a single field. The image is a bit noisy, largely due to the day 10 moon that lit up this winter scene.

On a cold and frosty night... sweet dreams.

Comments

Revisions

  • M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray
    Original
  • M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray
    B
  • Final
    M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray
    C

B

Description: This ‘seasonal’ version was stacked, aligned and HDR brightening and sharpening applied in Penumbra v0.6. The resulting L and RGB frames were then composed in Startool v1.6 and colour balance adjusted, before repairing distorted stars and some artefacts. I like the vibrancy of colours and the detail that has been extracted, even if the the core is blown out, and it looks as though it fell off the Christmas tree!

Uploaded: ...

C

Description: Revisiting old data with ASTAP - astrometric solving and stacking software, which does a good job weeding out the rubbish from my data. This final LRGB version comprises 30 x 15s and 35 x 30s L, 29 x 15s R, 27 x 15s G, and 48 x 15s B aligned and stacked in ASTAP followed by processing using a standard workflow in Startools. Unfortunately I couldn't find my flat frames, so some artifacts still present. Overall, I'm pleased with the colour and detail in this final version.

Uploaded: ...

Sky plot

Sky plot

Histogram

M43/42 - Santa and his sleigh?, 



    
        

            Tom Gray