Filter Performance Comparisons For Some Common Nebulae

by | Dec 28, 2023

Filter Performance Comparisons For Some Common Nebulae By Dave Knisely Light Pollution and various “nebula” filters have been around since the late 1970’s, and amateurs have been using them ever since to bring out detail (and even some objects) which were difficult to...

Useful Filters For Viewing Deep-Sky Objects

by | Dec 28, 2023

Useful Filters For Viewing Deep-Sky Objects Useful Filters For Viewing Deep-Sky Objectsby David W. KniselyPrairie Astronomy Club One of the biggest breakthroughs in the past 40 years for deep-sky enthusiasts has been the introduction of effective multi-layer...

Light Pollution Fact Sheet

by | Dec 28, 2023

Light Pollution Fact Sheet Lighting Study Design Standards Summary: click here. Our goal is to encourage quality lighting! We are NOT against night lighting. The 100 inch diameter telescope at Mt. Wilson Observatory, which overlooks the Los Angelas basin, is only 11%...

Observing the Sun in H-Alpha

by | Dec 28, 2023

Observing the Sun in H-Alpha H-ALPHA FILTERING SYSTEMS: Unlike continuum “white light” observations of the sun, observing the chromosphere requires a very narrow bandwidth filter centered on the Hydrogen Alpha spectral line (6562.8 Angstroms), which not only reduces...

Astrophotography for Beginners

by | Dec 7, 2023

This is a video of a class that was presented at Hyde Observatory on May 5, 2022. It covers the basics of astrophotography, including what types of cameras to use, image sensor basics, types of mounts and tripods, software tools and techniques. Websites, applications...