> Milky Way in different filters
This is a comparison of my not modified Pentax k5 DSLR and the same, but modified one without IR-cut filter.
Removing the IR-cut filter not only increase sensitivity by 1-2 stops, but also slightly increase the resolution as the IR light (despite not being that much detailed) pass trough the byer RGB mask without filtering.
Below we can see a shot with UHC-s filter as well, witch give us best contrast and brightness of the H-alpha objects as Lagoon nebula (M8). Thus it needs the longest exposure 120s against 60-90s for the other filters. You can see the beautiful Galactic horse dark nebula on the shots :)
To check the polar alignment of your telescope look trough the polar scope. When turning the Ra axis the polar star should move in the exact circle in the eyepiece without any deviation.
Removing the DSLR build in IR-cut filter will give you at least 50% more sensitivity for hydrogen alpha emissions of the nebulas. Also the camera will be more light sensitive at dark allowing you to shoot more faint objects.
We can check what is like to process day shot with similar to astrophotography techniques. It is cloudy in Bulgaria for the next week or so and I took shots of the nearby mountain trough the fog with 200mm lens.
Most of the modern LED backlight screens including Laptops, TV and smart phones use PAM technique for Pulse-amplitude modulation. This means that they switch on and off state very rapidly.
Having a video background gives you a lot of expression and dynamics to your site.
There a few ways to put your video as a background of your page layout.