Astro Arduino - part II - weather monitor
So, in the previous part we learned some basics - how to switch pin on and off, and then relays that can control power for devices, or for example…
Astro Arduino - part I
Arduino is open hardware platform that became extremely popular due to its simplicity, free and friendly development environment and massive number…
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…
Dumbbell M27 - deeper look (IOTD)
M27 Dumbbell (aka Apple Core Nebula) was the first planetary nebula to be discovered (in 1764 by Charles Messier). From his notes he reports: I…
Pillars in M16 Eagle Nebula
It is maybe worth to mention at the beginning, that M16 Eagle nebula was discovered neither by Messier nor by Herschel (as usual :) ), but by…
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…