Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  Great Nebula in Orion  ·  Horsehead nebula  ·  IC 430  ·  IC 434  ·  M 42  ·  M 43  ·  NGC 1976  ·  NGC 1977  ·  NGC 1980  ·  NGC 1981  ·  NGC 1982  ·  NGC 1990  ·  NGC 1999  ·  NGC 2024  ·  NGC 2064  ·  NGC 2112  ·  Part of the constellation Orion (Ori)  ·  The star 29Ori  ·  The star Alnilam (εOri)  ·  The star Alnitak (ζOri)  ·  The star Mintaka (δOri)  ·  The star Saiph (κOri)  ·  The star ηOri  ·  The star ιOri  ·  The star σOri  ·  The star ψ2Ori
Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
Orion Nebula & Horsehead Nebula Widefield
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Orion Nebula & Horsehead Nebula Widefield

Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
Orion Nebula & Horsehead Nebula Widefield
Powered byPixInsight

Orion Nebula & Horsehead Nebula Widefield

Technical card

Imaging telescopes or lenses: Canon 70-200 f4  ·  William Optics GTF-81  ·  William Optics GTF-81 Apo Triplet +

Imaging cameras: Atik 460EX  ·  Starlight-XPress SXVR H18

Mounts: Advanced VX

Guiding telescopes or lenses: Sky Rover 50/190mm Guide Scope

Guiding cameras: Starlight Xpress SXV-Autoguider

Focal reducers: Tele Vue TRF-2008

Filters: Baader Planetarium Ha 7nm 2"  ·  7 Brand LRGB 1.25"  ·  Orion H‑Alpha 7nm 1.25"  ·  IDAS LPS P2 2"

Accessory: Geoptik T2 Adapter for Canon EOS Lens


Dates:Oct. 13, 2013

Frames: 156x600" (26h)

Integration: 26h

Avg. Moon age: 9.04 days

Avg. Moon phase: 67.29%


Basic astrometry details

Astrometry.net job: 123718

RA center: 5h 40' 24"

DEC center: -2° 31' 22"

Pixel scale: 6.612 arcsec/pixel

Orientation: 91.413 degrees

Field radius: 9.037 degrees


Resolution: 8622x4736

Locations: Observatory, Lijiang, Yunnan, China

Description

Combine my previous shot of m42 & ic4343 together

horsehead:

WO 81GT + h18 Ha: 590min

Canon 70-200 @ 200mm f4 R:90min bin2 G:80min bin2 B:80min bin2

m42:

WO GTF81+ h18 Ha:200min core:15s, 20s X15

WO 81GT+ 460ex R:G:B - 60:60:60min bin2 core:10s X10

The ultrawide field Constellation Orion Ha is shot using

Canon 70-200 @ 70mm f4 + 460ex

Five mosaic for each frame at 2hr

Because the field is so wide, flex and image distortion is inevitable, I cant find a good tutorial to deal with it. It becomes serious even in just 4 mosaic frames combined which spans about 30X20 degree of the sky.

Therefore I discard the SH2-264 nebula as it was severely distorted.

Comments

Revisions

  • Final
    Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
    Original
  • Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
    B
  • Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
    C
  • Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813
    D

Sky plot

Sky plot

Histogram

Orion Nebula & Horsehead Nebula Widefield, 



    
        

            seasonzhang813

In these public groups

China Lijiang Gemini Observatory