Optolong L-eXtreme Dual-Band Narrow Band Filter 2" Mounted (OPT-L-EXTREME-2) Rechargeable Battery Pack while the mount retains the

while the mount retains the PEC recordings

This 140mm mask is great for 125mm - 130mm class telescopes

(See compatibility list below

25" optical tube offers 33% more light gathering ability than an 8" telescope

This was the year that Celestron joined forces with the Santa Barbara Instruments Group (SBIG) to produce Fastar

Optolong L-eXtreme Dual-Band Narrow Band Filter 2" Mounted (OPT-L-EXTREME-2) Rechargeable Battery Pack while the mount retains theUnlike the Optolong L eNhance filter which is a tri band (transmits Hb, Ha, and OIII), the L eXtreme filter is dual band that passes Ha and OIII emission lines. Main Usage L eXtreme is a two 7nm bandpass filter which can be used with one shot colour cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission