Tag Archives: OIII

Optolong L-eXtreme filter for Astrophotography

L-extreme Optolong

An image of the Elephant’s Trunk nebula in IC1396 taken with the Optolong L-eXtreme filter. The Optolong L-eXtreme filter for astrophotography is dual band, allowing one shot colour cameras (OSC) to capture H-alpha and Oxygen III wavelengths at the same time. I was fortunate enough to have Optolong send me an L-eXtreme filter for testing. […]

Pixinsight SHO processing of NGC 7822 – Tutorial

Pixinsight SHO processing

Hey folks! Hope all is well and you’ve been getting some clear skies. In this astrophotography video I gather data on NGC 7822 nebula region in Cepheus using my Skywatcher Esprit 100 triplet refractor telescope, Moravian 16200EC CCD and Optolong (Ha, OIII and SII) narrowband filters. It was a challenge to gather enough data for […]

Narrowband astrophotography from the city!

One of the biggest challenges in astrophotography is dealing with light pollution. This form of environmental pollution caused by unshielded and overly bright exterior lighting, washes out the night sky and makes both seeing and imaging the cosmos difficult and sometimes impossible. All is not lost though. For those of us living in a mid […]

Cygnus Wall in NGC 7000 Nebula (Narrowband)

Cygnus Wall in NGC 7000. Shawn Nielsen, 2014

This is 5 hours of H-alpha and Oxygen 3 data combined to produce a false colour image of the Cygnus Wall in NGC 7000. A variant of the Hubble palette colour profile was applied. This image consists of three hours of hydrogen-alpha (Hα) images and two hours of OIII data. The Hα frames were captured […]