The optical surfaces of all modern quality astronomical instruments are either coated and/or oiled-spaced with extremely thin layers of metallic/dielectric or liquid materials to improve optical performance.
As you get older and your eyesight is diminishing or light pollution is encroaching on your neighbourhood and you are not getting as much out of astronomy anymore, is there an alternative? Yes, there is!
Ron Macnaughton presents a fascinating perspective on the work of Nora Noffke and the significance of Microbial Mats in the exploration of the possibility of life on Mars.
Mercury is at its best for 2021 in late April, early May. Jupiter and Saturn are in the pre-dawn morning sky. For Apr-May 2021, we'll follow the meridian from south to north for an excellent sampler of deep sky objects.
Kerry-Ann Lecky Hepburn introduces us to her enduring passion of taking beautiful images of the night sky around the world. She tells us what led to her involvement, where it has taken her, and how she learnt her skills.
Jerry Vila gives an engaging brief overview of Tycho Brahe's life and work. Brahe is a 16th century Danish Astronomer known for his accurate and comprehensive astronomical observations.
