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Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow

Tarantula Nebula in the Large Magellanic Cloud

Getting plate-solving status, please wait...
Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow

Tarantula Nebula in the Large Magellanic Cloud

Equipment

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Acquisition details

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Description

Tarantula Nebula in the Large Magellanic Cloud

OTA:……………….FSQ 106ED (AUS2)
Camera:………….FLI Proline
Observatory:…. Telescope Live

EXPOSURES:                
…R: 12 x 450
…G: 12 x 450
…B: 10 x 450
…H: 14 x 300        
…S: 12 x 300        
…O: 11 x 300        
Total exposure    7.3 hours

Image Width: 5d 17m
Processed by Alex Woronow (2022) using PixInsight,  SWT, Topaz

Here are two versions of a wide-angle view of the Tarantula nebula and surroundings in the Large Magellanic Cloud. Both versions use emission-line extraction. Image A is SHO-Lines + RGB and image B is the SHO-Lines only. In both cases, the SHO lines were mapped to my version of true-color and H-beta was synthesized for each image.

The Ha emission line, plus 10% of the OIII and SII lines combined to make the L-channel in the SHO-Line image (B). Image A had no additions to its L-channel.

There are several differences between the two images, as should be expected. The most obvious is the lack of the blue star-illuminated cloud to the lower left of the Tarantula-nebula complex in the SHO-Lines image (B). That blue patch is obviously dominated by reflection nebulae. Image C is a blinking image of the Ha image (as captured) and the Ha emission-line only image. The “as captured” image contains the continuum spectrum as well as the emission line. And, indeed, the reflection nebulae contribute, through continuum emissions, to the Ha as-captured image, but are gone from the line-only image, as they should be. (Neither image has been processed beyond applying a stretch.)

Comments

Revisions

  • Final
    Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow
    Original
  • Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow
    B
  • Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow
    C

B

Title: SHO Extracted Emission lines

Description: Please see discussion on the left

Uploaded: ...

C

Title: Blink of Ha as captured and extracted Ha emission line

Description: Please see the description on the left

Uploaded: ...

Sky plot

Sky plot

Histogram

Tarantula Nebula in the Large Magellanic Cloud, Alex Woronow