2019 November: Complete LRGB Tutorial of NGC292, The Small Magellanic Cloud by Christian Sasse, Astronomer in Charge of iTelescope.net
2019 September: Astro Pixel Processor and iTelescope.net celebrate a new Partnership!
NGC 7000 LRGB
Here is my last picture taken in my garden around christmas.
Canon 6D(a) + Tamron 70-200mm 2.8 + Fornax Lightrack II + Optolong L Pro
33x 120 sec. / F4 / ISO 1600
30 darks / 20 flats / 60 bias
Very nice. My only critique is that it looks like blacks are clipped.
Indeed, some of the blacks are clipped which you want to avoid.
Here is an example with and without Black Clipping, if you visually look at the image/data, sometimes it isn't that apparent, but the Histogram tells you what actually is happening, the Left Side of the Histogram needs to be near zero to prevent black-clipping anywhere in the image.
With Black Clipping, see left side of the Histogram:
Without Black CLipping, again, see left side of the Histogram:
Main developer of Astro Pixel Processor and owner of Aries Productions