Having been a keen astrophotographer for a number of years, I have primarily focused on planetary and lunar imaging (with the excellent ZWO ASI290mm camera) and some deep sky imaging with a digital SLR camera. However, the use of narrow band filters opens up an entirely new method of capturing truly spectacular deep sky images of emission nebula.

Unlike imaging in broadband using Red, Green and Blue filters, narrowband such as H-alpha, OIII and SII capture only a slither of the spectrum of light. This means that the effects of light pollution are totally removed!

Having purchased a set of Baarder narrowband filters, I was impressed that they arrived well protected in individual containers. The build quality of each filter was exceptional, but it was in the quality of their enhanced contrast in which they excel.

Since all narrowband filters pass less light, it is necessary to increase the exposure time of each frame. Therefore, to aid focusing, I also added a Baarder clear focusing filter to my usb filter wheel. I am now confident that each narrowband wavelength is perfectly in focus without having to run longer exposure tests.

My set-up, like most astronomers, is continuously evolving. In order to further enhance the autoguiding capabilities, I will be looking to invest in a skywatcher Evo-guide 50mm in the future. This will reduce my current payload weight and also provide the option of wide field astrophotography. Just don’t tell my wife!

I have been a customer with First Light Optics for over fifteen years, having purchased my very first serious telescope from them (Skywatcher 8” Newtonian on an HEQ5 pro mount). I have always found FLO to provide a friendly, excellent service and to quickly address any issues or questions if they arise.