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Petergoodhew

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Everything posted by Petergoodhew

  1. Thanks Brendan. The 71.5 hours was almost all done using just one scope due to some problems with the other scope that I've only just resolved. As you know the weather has been dreadful in Extramadura, like elsewhere in Spain - so it took me two months to capture this stupidly faint target!
  2. Hartl-Dengel-Weinberger 3 (HDW 3, PK149-09.1, PNG149.4-09.2) is an extremely faint ancient planetary nebula in the constellation Perseus. It is so faint that it is very rarely imaged. Astrodon Blue: 17x300" Astrodon Green: 20x300" Astrodon Lum: 39x600" Astrodon Red: 20x300" Astrodon OIII: 51x1800s bin 2x2 Astrodon Ha: 76x1800s bin 2x2 Total Integration: 71.5 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length) Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  3. Rodd it's in Cassiopeia: RA 03 03 47.01 DEC +64 54 35.7 It would fit really well at 1000mm.
  4. Just a slight edge crop Rodd to tidy things up.
  5. HFG1 (PK 136+05) is a very old large, low-surface-brightness planetary nebula in Cassiopeia that was discovered by Heckathorn, Fesen, and Gull in 1982. It surrounds, and was produced by, a binary star system (V664 Cas) that is moving rapidly through our Galaxy. The star is moving towards the lower left of the image. As HFG1 plows through the interstellar medium, a bluish bowshock is produced; and a red trail of gas is left behind in its wake. Astrodon Blue: 10x300" Astrodon Green: 10x300" Astrodon Lum: 11x600" Astrodon Red: 10x300" Astrodon OIII: 35x1800s bin 2x2 Astrodon Ha: 33x1800s bin 2x2 Total Integration: 38 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length) Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS Ref: Monthly Notices of the Royal Astronomical Society 396(2):1186 - 1188 · June 2009
  6. Thanks. There's a chap called Sakib Rasool (starsurfin.co.uk) who sends me lots of requests for me to image the more obscure (i.e. challenging!) planetary nebulae. Peter
  7. Kronberger 61 (Kn 61). also known as the Soccer Ball nebula, is a recently-discovered planetary nebula in the constellation of Cygnus. It was discovered in January 2011 by Mattias Kronberger, who is a member of the amateur group Deep Sky Hunters. It is very small (diameter of 104 arcsecs). It is barely visible on the second Palomar Optical Sky Survey (POSS-II) blue plate scan, suggesting a surface brightness well below magnitude 25 per square arcsecond - and at an estimated distance of 13,000 light years (1). It is a highly filamentary bubble with a high expansion velocity of 67.6 km/second. A crude kinematic age for the bubble yields 16,000 years (2). Astrodon Blue: 10x300" Astrodon Green: 10x300" Astrodon Lum: 19x600" Astrodon Red: 10x300" Astrodon OIII: 34x1800s bin 2x2 Total Integration: 23 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length) Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS (1) <a href="http://www.gemini.edu/node/11656" rel="noreferrer nofollow">www.gemini.edu/node/11656</a> (2) <a href="https://arxiv.org/abs/1406.4408" rel="noreferrer nofollow">arxiv.org/abs/1406.4408</a>
  8. DeHt5 (Dengel-Hartl 5) is a large faint ancient planetary nebula in the constellation Cepheus. It is estimated to be one of the closest planetary nebulae at a distance of 1300-1600 light years. The faint red filaments at the top right hand corner of the image are the supernova remnant called SNR 110.3+11.3. Astrodon Blue: 19x300" Astrodon Green: 19x300" Astrodon Lum: 20x600" Astrodon Red: 20x300" Astrodon Ha: 25x1800s bin 2x2 Astrodon OIII: 26x1800s bin 2x2 Total Integration: 34 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  9. MWP1 (Motch-Werner-Pakull 1) also known as The Methuselah Nebula is a rarely-imaged faint bi-polar planetary nebula in the constellation of Cygnus. It is one of the largest known planetary nebulae - spanning some 15 light years. It lies around 4,500 light years from Earth. Astrodon Blue: 16x300" Astrodon Green: 16x300" Astrodon Lum: 18x600" Astrodon Red: 16x300" Astrodon Ha: 35x1800s bin 2x2 Astrodon OIII: 37x1800s bin 2x2 Total Integration: 43 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  10. Another great image Olly. What’s the thinking behind 9 hours of colour and 7 of luminance? I always thought the most of the capture should be luminance to tease out most detail? Peter
  11. Thanks Geordie. This is a tough one with dark skies. Getting those shells in poor skies will be really tricky.
  12. An unusual group of galaxies i(ARP 227) in the constellation of Pisces. Outer shells may have been created from gravitational interaction between galaxies. The largest galaxy is NGC 474. It is 100 million light years away, and about 250,000 light years across. The outer shells are extremely faint and have necessitated 1800s luminance exposures. Astrodon Blue: 63x300" bin 2x2 Astrodon Green: 64x300" bin 2x2 Astrodon Lum: 54x1800" bin 1x1 Astrodon Red: 54x300" bin 2x2 Total Integration: 42.1 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  13. Sharpless 200, also known as HDW 2 (Hartl-Dengl-Weinberger 2) and commonly known as the Bearclaw Nebula is a very faint planetary nebula in the constellation of Cassiopeia. The Ha signal is much fainter than the OIII so I went extra deep on the Ha capture. Astrodon Blue: 20x300" bin 1x1 Astrodon Green: 10x300" and 10x600" bin 1x1 Astrodon Lum: 37x600" bin 1x1 Astrodon Red: 20x300" bin 1x1 Astrodon Ha 5nm 62x1800" bin 1x1 Astrodon OIII 3nm 37x1800" bin 1x1 Total Integration: 61.5 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  14. An excellent image of a target so often overshadowed by its big neighbour. Well done. That long integration has really paid off.
  15. Yes Alan, its been a remarkable run of clear weather.
  16. A barred-spiral galaxy in the constellation of Camelopardis. It is estimated to be 112 million light years away. Astrodon Blue: 14x300" bin 1x1 Astrodon Green: 30x300" bin 1x1 Astrodon Lum: 92x600" bin 1x1 Astrodon Red: 30x300" bin 1x1 Total Integration: 21.5 hours Captured on my dual rig in Spain. Scopes: APM TMB 152 LZOS refractors Mount: 10Micron GM2000 HPS Cameras: QSI6120wsg8
  17. There is a tiny amount of featureless O3 - but it is so little it wasn't worth including it.
  18. A planetary nebula in Cassiopeia discovered by Marcel Drechsler in May of this year. Intensely faint. 25 hours of HaLRGB Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  19. A very faint planetary nebula in the constellation of Cassiopeia. It was identifed by Laurent Ferrero in November 2013. This is a total of 41 hours of integration. HaOIIILRGB Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  20. NGC 7662 is also known as the Blue Snowball nebula, and the Snowball nebula. It is a planetary nebula in the constellation of Andromeda. There is uncertainty about its distance, with estimates varying between 1,800 and 5,600 light years from Earth. This is a total of 20 hours of integration. Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS The core was captured from London on my Celestron C11 telescope.
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