The Rosette Nebula, sculpted by stellar winds and radiation

25,002.500,00 (IVA tax inc.)


The Rosette Nebula, NGC 2237,  is a large and amazing HII region located in the Monoceros constellation. The nebula lays some 5.000 light years away from us and measures 130 light years in diameter spanning over 5 times the angular diameter of a full moon.

In the core of the Rosette Nebula can we find the open cluster NGC 2244, composed by hot young O-type stars that sculpts, with its strong winds and radiation, the entire nebula creating this characteristic and aesthetic shape. This region evokes imagery of several African animals.

This image, with a total exposure of 13.5 hours, is the result of combining narrow band data, with the use of [SII], Hα and [OIII] filters, with broadband data, to give a natural color to the stars with the use of R, G, B filters.

To better show the emission data that comes from this active star forming region, a variation of the HOO palette has been used to enhance the entire structure of this nebula. The percentages used to compose this image have been:

RED channel: 30% [SII] + 70 % Hα ; GREEN channel: 20% Hα + 80% [OIII] ; BLUE channel: 20% Hα + 80%

The star’s colors come directly from the use of broadband filters (R,G,B).

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​ HD image.

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Image Details

Hα: 32×600″

[SII]: 9×600″

[OIII]: 18×600″

R: 18×300″ – G: 12×300″ – B: 18×300″


Calibration: 50 darks, 50 bias


All images taken at 0Gain Bin1 -25ºC


Total exposure:  13,5h

Data processing September 2021 – Data acquisition 2018



FSQ85ED telescope

Mesu200 mount

ASI 1600MM Pro camera with ZWO EFW 8 pos

Guiding with ASI174MC and ZWO OAG

Baader filters



Aleix Roig, September 2021.

Additional information

Image use

Non-commercial use, Commercial Use