Celestial hemisphere:  Southern  ·  Constellation: Carina (Car)  ·  Contains:  NGC 3199
NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando
NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C)
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NGC 3199 In Three Views: Pure LRGB (View B), LRGB Enhanced by Ha, O3 (View A) and Narrow Band Mapped in HST Palet (View C)

NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando
NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C)
Powered byPixInsight

NGC 3199 In Three Views: Pure LRGB (View B), LRGB Enhanced by Ha, O3 (View A) and Narrow Band Mapped in HST Palet (View C)

Equipment

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Acquisition details

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Description

Distant from Earth 11 736 light years in the southern constellation of Carina, NGC 3199 is classed as a diffuse nebula, embedded with a highly assymetric Wolf-Rayet star close to the center of the ring. The nebula is about 75 light-years across.

A Wolf-Rayet star is hot, short-lived and generates an intense stellar wind. The one in NGC 3199, as mentioned, has a highly asymmetric morphology, with a very bright hemisphere near the exciting star HD 89358 and a much fainter and more extended other hemisphere.

This nebula is modeled in terms of the distorted bubble produced by a moving star blowing a strong stellar wind into a surrounding uniform interstellar medium.

This description is an outine of the article found in:

http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?1989A%26A...226..270D&defaultprint=YES&filetype=.pdf

The image is a LRGB standard enhanced by narrow band data from captures of 12 subframes of 20 minutes for each channel (Ha, O3 e S2).

The subs of LRGB followed the sequence showed below:

Lum: 10x900sec bin1x1

RGB: 10x600sec bin2x2

Set-up:

Scope: Esprit 120 f/7

Mount: CGE-Pro

Camera: ST8300M

OAG and Filter Wheel: SBIG 8300

Guider CCD: Lodestar

Darks, bias and Flats applied

Comments

Revisions

  • NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando
    Original
  • NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando
    B
  • Final
    NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando
    C

B

Description: This is the pure LRGB image without any enhancement.

Uploaded: ...

C

Description: This is the Narrow Band image, using a HST color palet. The image contains Ha, O3 and S2 . In order to keep the spectral information of the stars, the stars have been merged from the LRGB image onto the narrow band image's spectral meaningless stars.

Uploaded: ...

Sky plot

Sky plot

Histogram

NGC 3199 In Three Views:  Pure LRGB (View B),  LRGB Enhanced by Ha, O3 (View A) and  Narrow Band Mapped in HST Palet (View C), Fernando