Author Archives: Shawn Nielsen

Meet M97 and M108, the Owl and the Surfboard

sLRGB-M97-M108-Shawn_Nielsen-2019

Here’s an interesting pairing in the night sky. Meet M97 planetary nebula and M108 spiral galaxy from the Messier Catalog of deep sky objects. While they look side by side from our perspective here on Earth, M97 is actually 2,600 light years distant while the Surfboard galaxy M108 is a whopping 45 million light years away! Both […]

New NATGEO article: Our nights are getting brighter, and Earth is paying the price

light pollution sky quality meter

Did you know light pollution is growing each year, faster than any other form of pollution? The invention of the white LED has herald a new wave of energy efficiency that has produced the opposite of what was intended – we are using more artificial light than ever before because LED is cheap and white […]

New Focus Cube for my telescope – install and review!

Focus Cube

Received my new Pegasus Astro Focus Cube which will be attached to the Esprit 100 refractor. Join me in unboxing the Focus Cube, see how it’s installed and my thoughts on this astro product. Pegasus Astro Focus Cube >>> http://bit.ly/2ZbjHYZ https://www.youtube.com/watch?v=KELpAyFq0UQ

Return to the Horsehead and Flame Nebulae

Horsehead and Flame Nebulae

It’s been quite some time since I imaged this region of space. Nearly 10 years much to my surprise as I thought about it. Returning once again to the Horsehead and Flame Nebulae, I found myself armed with a new equipment and a new set of imaging and processing skills than previous.  Imaging this deepsky […]

How to calibrate and auto stack in Pixinsight

There’s an easy way to calibrate, align and auto stack in Pixinsight. I’ll show you how in this tutorial. Open up the batch preprocessing script, select your lights, flats, darks and bias frames and click go! https://www.youtube.com/watch?v=cSSu3CV_M3E