Optolong L-eXtreme F2 Dual Band 2 Inch Nebula FilterOptolong L eXtreme F2 Dual Band 2 Inch Nebula Filter Optolong L eXtreme F2 is a dual band (500. 7 nm and 656. 28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at continuously varying angles. Astronomically characterised spectral lines (OIII, Ha) as the main transmission wavelengths, the OIII and H Alpha nebula emission lines pass accurately at f2 f3. 3 Focal Ratio. Features Together with one shot colour

COA and often a chain of custody of certificates of previous owners & collectors

UHC Nikon FF Full Frame is compatible with Canon camera bodies below:

with the aid of its fine-focusing facility

because it’s very difficult to create a lens with the same focal point for the visible and IR spectrum

HEQ5-R Pro

ZWO came up with this high quality 5-position filter wheel

This makes the Infinity well-suited to a huge variety of setups

back-illuminated Sensor Size: 8

All seven X-Cel LX eyepieces sport 16 mm of comfortable eye relief

and lots of bonus accessories

The first book specifically for DSLR astrophotography

Cassiopeia & Octans are etched into the reticle