The Optolong L-Pro Light pollution filter is a multi-bandpass filter optimized for various emission spectra in reflection nebulae and galaxies, and to remove multiple common artificial light sources as well (such as Mercury or Sodium vapor lamps). It comes in various form factors for individual camera use, or telescope use, including a 2″ and 1.25″ form factor. It contains Continue reading “The Optolong L-Pro 2″ Light Pollution Filter”

The Starizona 0.63x SCT reducer and corrector is a phenomenal piece of equipment for demanding tasks on SCTs, such as deep sky astrophotography with large total integration times. It both decreases the focal length as with a standard reducer, while also flattening the field by eliminating the coma and other optical imperfections present with SCTs in particular. Although this thing isn’t cheap, I found great success with it. The most noteworthy aspect was how it didn’t introduce heavy gradients such as with the cheaper Antares reducer I used to use. This leads to Continue reading “Starizona 0.63x SCT Reducer & Corrector”

The Antares f/6.3 Focal Reducer for Schmidt-Cassegrain Telescopes is a low-price option for reducing the focal length of your Schmidt-Cassegrain telescope from f/10 to f/6.3. This “speeds up” the optical train by reducing the focal length and magnification of the scope, requiring less time to integrate the same signal. A focal reducer along this line is probably the most common accessory bought for SCTs because for beginners Continue reading “Antares f/6.3 Focal Reducer for SCTs”