Lunt - 75mm Ha Etalon Filter with B3400 for 2 " Focuser

75mm Ha Etalon-Filter-System with B3400 blocking filter for 2" focuser

H-alpha Single Pass Front Mount Etalon System for telescopes with 2" focuser and up to 3060mm focal length.

Introducing the LS75 Hydrogen-alpha system. To kick off the new company we are offering the 75mm aperture integrally tuned etalon for use on any customer supplied refractor. System includes the B3400 blocking filter which provides full disk images on telescopes up to 3060mm focal length.

Because the LS75 has an estimated bandpass of <0.75 Angstroms it is capable to providing high contrast views of both surface and edge detail. Adding an additional etalon system will reduce the bandpass to ~<0.55 (dependant upon scope) allowing for higher resolution viewing and/or imaging.

Delivered with order:
• Main Filter
• Blocking Filter (for 2" focuser)
• Transport case

Introducing the LS75 Hydrogen-alpha system..... Although Lunt is in the final stages of patenting the large filter design. Lunt Solar does have pricing and projected delivery times. The LS75, LS100, and LS160 all have a unique design feature which allows for a more stable filter that is also less prone to de-contacting. (more information as is becomes available). System includes the B600 standard for use on telescopes up to 600mm focal length. *Blocking filter required.

 Because the LS75 has an estimated bandpass of <0.75 Angstroms it is capable to providing high contrast views of both surface and edge detail. Adding an additional etalon system will reduce the bandpass to ~<0.55 (dependant upon scope) allowing for higher resolution viewing and/or imaging. Specifications: • Aperture: 75mm • Focal Length: Customer Supplied Scope • Band Pass: <0.75 Angstroms RMS • Color: Pearl White with Black Anodize System Includes: • LS75 Ha Filter. • B600 Blocking Filter (Other sized available by request) • Re-enforced case with foam.