Petergoodhew
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Everything posted by Petergoodhew
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Thanks Laurin - yes this was with the twin TMBs. Now with the dual rig I can capture Ha/OIII twice as quickly! Peter
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Göran, yes the colour balance needed adjusting. Too much magenta lurking around! Fixed now. Many thanks, Peter
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Abell 39 is a low surface brightness planetary nebula in the constellation of Hercules. It is almost perfectly spherical and also one of the largest known spheres with a radius of about 2.5 light-years. 22h5m total integration (20x300s L,13x300s R, 20x300sB, 20x300s G, 32x1800s OIII). e-Eye, Spain 28/3-4/5/2019. APM TMB 152 F8 LZOS, 10 Micron GM2000HPS, QSI6120wsg8
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M63 Photometric Colour Calibration or Classic Colour Calibration?
Petergoodhew replied to wimvb's topic in Imaging - Deep Sky
Interesting comparison Wim. I much prefer the classic. The PCC version is swamped with red and the blue almost disappears. -
It's a lovely image. I'm struggling to see the star elongation too. One possible explanation for it could be wind conditions, given the long OTA of a 150 refractor, increased exposure from the higher elevation, and high sensitivity resulting from being F11. Personally I would like to see a little more red, so would add the Ha to 1.0 R rather than 0.9 R.
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Yes the colours are unconventional - but you've achieved a staggering amount of depth - I don't think I've seen any astro image with so much 3-dimensional feel to it. A remarkable and beautiful image - even if the colours take us out of our comfort zones! Smashing!
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I've been really struggling with star reduction techniques messing up the stars. Have just tried this and it works a treat! Many thanks.
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Hi Dave, where in West London are you?
I'm in Chiswick, right under the flight path to Heathrow's northern runway!
Peter
