NGC 2237 Narrow Band 19 December 2004

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Subject	NGC 2237
Date	19 December 2004
Telescope or Lens	Tak FS60C with AP 0.75 focal reducer
Mount	G11
Camera	ST2000XM
Filters	Schuler 10nm Ha, Custom Scientific 4nm SII and OIII
Total Exposures	L	120 min	R	180 min	G	120 min	B	180 min
Sub exposure	Ha data 6 x 20 min		9 x 20 min		6 x 20 min		9 x 20 min
Binning	Luminance 1x1 RGB 1x1
Field of view and resolution	Approx 160 x 122 Arcminute. 6 Arcsec / Pixel

Comments

The colours were assigned as follows: SII RED, Ha GREEN, OIII BLUE. This narrow band image of the Rosette Nebula, NGC2237 also shows other objects. The star cluster in the centre is NGC2244, and other areas of the nebula are designated NGC 2239 and 2246.