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Andrew Harrison
4 followers -
amateur astronomer with interests in CCD imaging and astrophotography
amateur astronomer with interests in CCD imaging and astrophotography

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The Jellyfish Nebula (IC443)
The Jellyfish Nebula is an expanding bubble-shaped cloud of debris from a massive star that exploded over 30,000 years ago.  The nebula is about 5,000 light-years distant in the constellation Gemini.  It is a faint and elusive object but is captured here us...

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Pickering’s Triangle in Ha-OIII
Part of the larger Veil Nebula complex, these glowing filaments of ionised hydrogen are the result of shock waves from a massive supernova explosion estimated to have occurred around 5,000 years ago.  The original Ha image was taken over three nights in Oct...

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Widefield view of Heart Nebula (IC1805)


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Melotte 15 at the heart of the Heart Nebula (IC1805)
The open star cluster at the centre of this image is known as Melotte 15 and is embedded within a central portion of the much larger glowing nebula known as the Heart Nebula.  The gnarled structure is a massive area of glowing ionised hydrogen where dust an...

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New 10Micron GM1000 HPS equatorial mounting
I have been operating the 10Micron GM1000 HPS mount with my APM 6 inch refractor since beginning of November 2015.  It is a superbly well engineered and extremely accurate mount.  Building a sky model and polar aligning the mount are straightforward tasks a...

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NGC 7635 The Bubble Nebula


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Wide-field image of IC1318 in Cygnus
The bright star projected at bottom centre of this image is the supergiant Gamma Cygni (Sadr).  It is located only 750 light years away and is not associated with the background nebulosity which is much more distant at 5000 light years.  Above Gamma Cygni a...

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IC1396 – Bicolour combined Ha and OIII images
This is a colour enhanced version of the Hydrogen Alpha image of IC1396 in Cepheus acquired on 17th July 2015.  The image is made up of an additional four hours of Ha data and combined with 6 hours of OIII using the Cannistra Modified Bicolour Narrowband Te...

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IC1318 - Butterfly Nebula (Part B)
IC1318 is a giant HII cloud and one of the brightest among all the emission clouds in the Cygnus complex.  The cloud is bisected by a thick obscuring dust lane to create two parts that have been compared to the wings of a butterfly which has led to its popu...

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Fleming’s Triangular Wisp (aka Pickering's Triangle)
Part of the larger Veil Nebula complex, these glowing filaments of
ionised hydrogen are the result of shock waves from a massive supernova
explosion estimated to have occurred around 5,000 years ago.  The nebula
was discovered photographically by William...
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