BAADER C2 SWAN-BAND FILTER FOR COMETS Size:1.25" 25 eyepiece drawtube output with

25 eyepiece drawtube output with optional 2" and SCT accessories available

ΔT of 30°C Memory buffer

2" 90° diagonal

while the widest possible imaging field greatly facilitates the realization of variable stars

Shipping dimensions of the Medium-32 are 300 x 125 x 180 cm

BAADER C2 SWAN-BAND FILTER FOR COMETS Size:1.25" 25 eyepiece drawtube output withThe Baader C2 Swan band filter isolates the two diatomic carbon lines at 511 & 514nm, which dominate the spectrum of a comet's gas tail and plume, respectively. Unlike other Swan band filters on the market, this filter completely blocks the OIII line at 501nm and below. The C2 filter has a central wavelength of 512nm with a half width of 15nm. This makes it useful not only for cometary imaging, but as an OIII parallel filter to better remove stars