A very faint Supernova remnant lurks in Cassiopeia, quite close to the big 'W'. Variously known as Abell 85, CTB-1, G116.9+0.2, PK 116.9+0.1 and LBN 576. Despite severe gales, rain and fast moving clouds, there were some good clear periods in early November 2010, and I succeeded in acquiring data over three nights, 6th, 10th and 12th. TMB105 refractor and William Optics 0.8 reducer/flattener. SBIG ST-10XME with AO8. Luminance (and Red) with a Baader 7nm H-alpha filter, Green and Blue with Astronomik OIII and SII filters. Ha 13 x 30 minutes, OIII and SII each 6 x 10 minutes binned 2x2. Full Size (1 MB!) |
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Messier 78 in Orion. 19th and 24th January 2009. Luminance 8 x 10 minutes, RGB each 5 x 2 1/2 minutes binned 2x2. ST10XME with AO-8 and Astrodon filters on Meade Series 5000 127 refractor. Messier 78 is also designated as NGC 2068, and there are three other NGC objects in this image, 2064, 2067 and 2071. 'Mouse over' the medium size image for identification. McNeil's Nebula is also clearly visible. |
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Messier 1 - the Crab nebula in Taurus. 29th November and 18th December 2008. ST-10XME on 12" LX200R with AO8. Luminance 20 x 5 minutes, RGB each 6 x 2.5 minutes binned 2x2. Full size (Cropped from full frame - some of the frames were slightly rotated on different nights.) This image was published in the February 2010 Astronomy Now magazine |
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In Taurus near Alnath, the large but very faint supernova remnant Simeis 147, also known as Sharpless 240, really needs high altitude contrasty sky and professional standard instruments to get fine detail, for example this APOD I got a partial image of this a couple of years ago, but with a succession of clear nights had another go. Same 135 mm lens as last time, but the larger chip of the ST10 re the Art 285 captured the whole thing. The small nebulosity near the left edge is SH 242. Narrowband helps! All luminance taken on 1st. December 2008. Yes, the sky cleared beautifully a few hours AFTER the occultation of Venus which was clouded out - Sod's law in spades!! Luminance 10 x 15 minutes ( I had another 10 from an earlier night, but they were taken in very poor seeing, and combining them with the later 10 bloated the stars a bit - pity to waste all that data but....) RGB each 6 x 5 mins Ha, OIII, SII. |
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Messier 17, the 'Swan'/'Omega' nebula in Sagittarius. 8th August 2008, Les Granges, France 4" Genesis refractor, ST10XME, AO-8 and narrowband filters. Luminance 6 x 10 minutes Ha, GB each 6 x 4 minutes O3 and S2, Ha again used to provide Red. (See here for a flight of fancy!) This image was 'Picture of the Month' in the November 2008 'Astronomy Now' magazine |
NGC 7023, the Iris Nebula in Cepheus. 14th and 15th. July 2006. Artemis and Mirage at f6.3. The cluster just to the right of centre is Collinder 427. Luminance 10 x 4 minutes, RGB each 4 x 4 minutes. |
Messier 42 - the Orion nebula. January 14th 2006. Artemis 285, TMB105 refractor. Luminance from Ha, colours using Ha, O3, S2. Ha 4 min and 2 min. frames (to get the core), O3 and S2 3 min. frames. |
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NGC 2024. Flame Nebula and B33 Horsehead Nebula in Orion. 6th. Dec. 2005. Art 285 and TMB 105. Luminance 9 x 6 minutes, RGB each 3 x 6 minutes |
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NGC 6888, nebula in Cygnus. 22nd. June 2005. Art 285, Mirage 8 at f 6.3, 12 frames x 4 minutes H-alpha filter. Colour added in Photoshop. |
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NGC 7635, the 'Bubble' nebula in Cassiopeia. 16th. August 2004. MX716, Mirage 8 at f6, L 7 x 3 mins, RGB each 1 x 3 mins. |
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