5 hours total integration time
300 second subs
Gain 120
Skywatcher Evostar ED80
HEQ5 Pro
ZWO294
L-eNhance filter
IC1805 Heart Nebula
Skywatcher Evostar ED80
HEQ5 Pro Mount
ZWO ASI120 guide
ZWO ASI 294mc pro
120 Gain
5 minute subs
8 hour total exposure
L-eNhance Optolong Filter
Stacking / prep in Astro Pixel Processor
Processed in Photoshop
Iris Nebula
99 x 120s Red Gain 0
100 x 120s Green Gain 0
99 x 120s Blue Gain 0
~10 hours total integration ZWO ASI1600MM-Pro, Takahashi FSQ-106
The Fish Head Nebula - A different take
This version of the previously posted image utilises a different palette that is similar to the Hubble one but instead Oxygen was mapped to Red and Sulphur to Blue. Then the colours were painstakingly altered to achieve different hues of blue to make the nebulosity appear to be water with the 'Fish' leaping out. The Fish is traditional Hubble Palette (SHO) mapped data that has been blended into the blue mapped data, so two images processed alongside each other and then blended together.
Ha 58 x 360s Gain 200 Ofset 50
OIII 56 x 360s Gain 200 Ofset 50
SII 51 x 360s Gain 200 Ofset 50
The Fish Head Nebula
Part of the Heart Nebula Complex (IC 1805) which lies in Cassiopeia, around 6000 light years from Earth, it is a star forming region comprised of glowing gases and obscuring dust. This 'false colour' image utilises the Hubble palette where narrow-band emission data from Sulphur, Hydrogen and Oxygen gas is mapped to Red, Green and Blue channels respectively with a little bit of mixing to get good transitions of colour. The object Melotte 15 is also visible to the bottom left of the image which lies at the centre of the Heart Nebula. Captured using my own ZWO astro-cam attached to our astronomical society's telescope (Takahashi) and mount. The data was acquired over 5 different nights between October and December. Processed mostly in PixInsight with finishing touches in Photoshop and Lightroom. This is only my second narrow-band image and I am very pleased with how it turned out. It is just under 17 hours of data and it has probably taken me about the same amount of time to process the image.
Donington Hall Star Trails
September 2019.
157 x 30s exposures, Sigma Art 14mm F4, ISO 100, Nikon D750. At least 6 hours of post processing work here.
The mist looked nice but caused the lights to bloom - hence all of the post work to tame it. Also a dew heater would have helped keep condensation off the lens.
Cusworth Hall and Lake Star Trails
September 2019, 35mm Nikon D750, around 30 minutes of exposures.
Very tricky to edit because of cloud in a lot of the shots, I could have discarded those frames but that would mean much shorter trails. So some photoshop magic was involved to remove them, the reflection in the lake is not real, for two reasons, the aforementioned cloud and also there was a swan and other water foul floating around which made trails. So I copied the vista, flipped it and using one of my cleaner 'real' reflection frames as a reference I blurred (it was fairly still but a bit of a breeze which moved the water surface), stretched and darkened the reflection to match what it should look like.
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