Celestial hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  50 zet Ori  ·  Alnitak  ·  B33  ·  Flame Nebula  ·  Horsehead nebula  ·  IC 434  ·  IC 435  ·  NGC 2023  ·  NGC 2024  ·  Orion B  ·  Sh2-277  ·  The star Alnitak (ζOri)
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Horeshead Complex HaLRGB, Rodd Dryfoos
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Horeshead Complex HaLRGB

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Horeshead Complex HaLRGB, Rodd Dryfoos
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Horeshead Complex HaLRGB

Equipment

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Acquisition details

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Description

TOA 130 with .7x reducer

STT-8300 with Astrodon series e filters

Red: 33 10 min

Green: 25 10 min

Blue: 16 10 min

Lum: (Used the RGB subs as super luminence)

Ha: 16 30 min

This was a frustrating one--took me months to complete due to weather, the Moon, Gremlins, the Moon again.....did I mention the weather? The data is only fair at best-with FWHM values being elevated in most subs. I added some Ha in the red channel (80%) and a bit in the luminance channel (10% or so). It was a tricky balance.

Comments

Revisions

  • Horeshead Complex HaLRGB, Rodd Dryfoos
    Original
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    B
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    C
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    D
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    E
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    F
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    G
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    H
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    I
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    J
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    K
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    L
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    M
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    N
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    O
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    P
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    Q
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    R
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    S
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    T
  • Horeshead Complex HaLRGB, Rodd Dryfoos
    U
  • Final
    Horeshead Complex HaLRGB, Rodd Dryfoos
    V

B

Description: desaturated the break line a bit

Uploaded: ...

C

Description: final tweaks

Uploaded: ...

D

Description: A bit more blue--I had desaturated the blue channel

Uploaded: ...

E

Description: A bit less blue

Uploaded: ...

F

Description: This is an HaLRGB with Ha added to lum and red channel. the lum was created using the RGB subs

Uploaded: ...

G

Description: the reflection nebula NGC 2023 is more detailed

Uploaded: ...

H

Description: Dropped brightness a bit

Uploaded: ...

I

Description: Raised the black point and balanced the histogram. Convolved the stars just a bit to soften the edges and gave them a touch of saturation

Uploaded: ...

J

Description: Final fine scale sharpening

Uploaded: ...

K

Description: Forgot to protect star edges during sharpening--removed faint sharpening artifacts by undoing and redoing with appropriate protections

Uploaded: ...

L

Description: Reduced Alnitak a bit

Uploaded: ...

M

Description: Reduced halo around Alnitak a bit.

Uploaded: ...

N

Description: Touched up NGC 2023 a bit--now it has more depth

Uploaded: ...

O

Description: Image-09c

Uploaded: ...

P

Description: Image-09h

Uploaded: ...

Q

Description: 4-20-19b: Reprocess having linear fit the Stacks to the R channel. Alnitak is separated better and palette is more balanced. Stars are improved--but still need work

Uploaded: ...

R

Description: HH-work.

Uploaded: ...

S

Description: HH work

Uploaded: ...

T

Description: TS

Uploaded: ...

U

Description: Newe4: Reduced Blue halos and lifted

Uploaded: ...

Sky plot

Sky plot

Histogram

Horeshead Complex HaLRGB, Rodd Dryfoos

In these collections

LRGB/HaLRGB Nebulae