Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Hourglass nebula  ·  Lagoon nebula  ·  M 20  ·  M 21  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6531  ·  NGC 6546  ·  The star 4Sgr  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid nebula
M20/M8 (Final) NB RGBLuHa, John Mills
M20/M8 (Final) NB RGBLuHa
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M20/M8 (Final) NB RGBLuHa

Equipment

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Acquisition details

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Description

Shot with a QSI 583 (borrowed) - really was my first attempt at using a CCD camera so please bear this in mind.

M20 and M8 imaged on a mono ccd camera in RGB. Luminance and H-Alpha also captured - but only 10min sub of each - individual RGB imaged at 180secs each.

Only 5 frames of RGBLu data stacked in CS6 after aligning/combining the data in Nebulosity first, the single frame of H-Alpha was added after.

Re-processing was then done in Nebulosity tweaks to star 'shape' and also saturation due to loss of colour after adding the H-alpha in CS6.

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Sky plot

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M20/M8 (Final) NB RGBLuHa, John Mills