Narrowband colours

If you are an astroimaging amateur and capturing narrowband frames, you probably already needed to make a decision - how to compose all these…


Astro applications CPU hunger

M1 Crab nebula World today is flooded with data. This also applies to astroimaging amateurs. Modern CMOS cameras has a large number of pixels…


Different times of astrophotography

Long time ago we have been doing astroimages with negative (or positive) film. We had one chance to take a long exposure photo. Then we have been…


How good guiding can be

Why we need to guide? Because mount mechanics are of limited accuracy, and once this accuracy is lower than our imaging setup resolution we need…


Pixel scale and resolution

Is astrophotography pixel scale and resolution the same? Can we increase resolution just by making pixels smaller? In some cases we can, but quite…


CMOS gain settings part II

In the first part I made a little introduction on gain setting in CMOS camera and also presented simple comparison made with luminance filter. In…


CMOS gain settings part I

Once we start to image with CMOS cameras, then we need to deal with more settings than with CCD cameras. I described some of them before, but now I…


M1 Crab RGB

RGB filters - equally or fairly

This is not yet another entry about RGB color calibration :)  This is about something, that is lurking deeper in the dark when you perform RGB…


Colour camera versus mono - price of comfort

Pretty many of astroimaging amateurs at some point need to choose between colour (OSC - One Shot Colour) or monochrome camera. This choice is not…


ACF 10" and CCDT67 telecompressor

It has already been some time from first light of Meade ACF telescope and I was looking forward a clear night. And it happened, a few days after…


Meade ACF first light

After about a week from a moment my new Meade ACF tube was installed on the pier I had a chance for first light. I was not completely prepared for…


Powering your setup

If you do astroimages these days you need some electricity. Long time ago it might not be a requirement, but today - yes it is :) Usually amateur…