Lagoon M8 and Trifid Nebula M20

Lagoon M8 and Trifid Nebula M20 captured with an 80-210 mm Tamron telephoto lens set at 210 mm f/5.6, an ASI 533MC cooled astronomy camera, dual band H-alpha and O-III filter, with an ASI 174MM guide camera on a 30 mm f/4 guide scope. This photo was imaged and tracked using a DIY go-to telescope … Continue reading Lagoon M8 and Trifid Nebula M20

Modified Celestron Travel Scope 70

The Celestron Travel Scope 70 has a front lens diameter of 70 mm and a focal length of 400 mm. A telescope with these specifications works well for terrestrials observations, both for daytime and nighttime. Due to its size, however, it has a very limited use for astronomical observation. Note that the telescope showed signs of … Continue reading Modified Celestron Travel Scope 70

DIY DSLR Filter Modification

I have performed filter modifications on a number of DSLR cameras (Canon 450D, 700D, 1200D, 500D, 1000D, 1100D, Nikon D3100, and Fuji X-A1) for me and my colleagues. It involves the removal of the stock UV-IR filter, making the camera more sensitive to H-alpha wavelengths. This modification is helpful only when shooting targets with H-alpha … Continue reading DIY DSLR Filter Modification

DIY Microfocuser for a Telephoto Lens

I’ve built an electronic automatic focuser (EAF) for my Tamron 80 to 210 mm telephoto (zoom) lens for automated and precise focusing. The focuser was built with a stepper motor, an A4988 stepper motor driver, an Arduino Uno, and a repurposed azimuth adjustment mechanism of an old Vixen mount. Vixen’s alt-az mount azimuth lock mechanism … Continue reading DIY Microfocuser for a Telephoto Lens

DIY Tamron to Astrocam Adapter

I have a 1980 Tamron 80 mm to 210 mm telephoto (zoom) lens that I intend to use for astrophotography. I could not find a dedicated astro camera adapter for this particular lens so I just improvised one. I used epoxy to connect a Tamron to Canon EOS adapter and an M42 connector for my … Continue reading DIY Tamron to Astrocam Adapter