A big light
For this review, we were kindly loaned an Ethos 21mm 100° eyepiece and a Parracor corrector by the Widescreen Centre. We found the 21mm and StarGate 500P an ideal combination. With it we examined a winter favourite, the Orion Nebula, and were bowled over with the amount of faint nebulosity and detail we could see – so much so that we coupled our Canon EOS 50D DSLR to see what we could capture. This is an altaz system and does not follow the stars in an equatorial mode, so exposures must be short to avoid field rotation. Even so, we captured many targets with just 10-second exposures, such as the Whirlpool Galaxy, M51, at ISO 2000, and the Orion Nebula at ISO 800. Changing to our GPCAM2 290C, we captured the heart of the Orion Nebula and trapezium stars with 1/3-second exposures and stacked 200 frames to give a very satisfying result. Overall, we had to conclude that this system is also a capable astrophotography instrument too.
Top: The Orion Nebula taken with a Canon EOS 50D DSLR Bottom: The Trapezium taken with a GPCAM2 290C