OPTOLONG L-Synergy FILTER GEOPTIK25 GM 4000 mandatory shipping kit

GM 4000 mandatory shipping kit is composed of a GM 4000 shipping wooden pallet box (#10M4100) and a pier adapter (#10M4090)

at 113mm long and 240 grams

M110 x 1 female (ESATTO 4")

Optical length 15 - 18 mm Clear aperture 38 mm Outer diameter 56 mm Connection side A

AzEq6 and the newer Eq6 mounts (model purchased after August 2008)

OPTOLONG L-Synergy FILTER GEOPTIK25 GM 4000 mandatory shipping kitThe Optolong L Synergy filter is a light pollution dual band filter designed to drastically reduce the effect of light pollution. Its two passing bands isolate the nebulae emissions in OIII (green blue) and SII (red). Differently from the Optolong L eNhance filter which is a tri band (transmits H beta, H Alpha, and OIII), the L Synergy filter has a narrower band pass of 7nm for each band. This filter is designed for modified DSLR's and astronomical