DAYSTAR QUANTUM H-ALPHA FILTER SE Bandwidth:0.3 - 0.5Å Optical thickness of the adapter

Optical thickness of the adapter is 35mm (total thickness with Esatto 4" is 100

75) thread allows easy connection of all commercially available cameras via a T2 ring

1898 times the human eye

1mm female

All the Geoptik dovetail bars are CNC machined and fully anodised

DAYSTAR QUANTUM H-ALPHA FILTER SE Bandwidth:0.3 - 0.5Å Optical thickness of the adapterDayStar's Quantum range of solar filters are designed for professional and serious amateur applications and offer absolute precision control over wavelength transmission. The SE grade meet the critical DayStar quality control criteria applicable in all visual and some photographic environments. The precision Quantum housing incorporates ALL of the desired features for today's solar astronomer and then some. Operation couldn't be simpler, just plug it