My telescope + camera is longer than the height of the mount head allows, so there are two areas of the sky where at high elevation the camera runs right into one of the two "front" tripod legs. That was the situation this month, imaging NGC-1333. I presume it could happen with the...
A binary system emits light that is the combined light output, or "spectra," from both of its stellar components. If star A is moving away from Earth and star B is moving toward us, or vice versa, the individual spectra of these stars can be resolved by theirred or blue shift. As o...
Both 𝛼α and Δ𝛼Δα maps, as visually rendered for NGC 3079, can be seen on the public data release website4. The yellow and gray Δ𝛼Δα map on this site shows that the error in the 𝛼α map in Figure 3 is less than 0.1 within the galaxy, except for the blue-purple...