LUNT B1800d2 blocking filter on 2" zenithal prism

LUNT B1800d2 blocking filter on zenith prism 2"

Blocking filter in 90° zenith prism for telescopes with a focal length up to 1620mm and 2'' eyepiece focuser. Can only be used in conjunction with the LUNT H-Alpha filter or a LUNT H-Alpha telescope !

Lunt Solar Systems offers locking filters in different sizes and you can choose between 90° zenith prism housings or straight extension cylinders. This way, you can choose which type of blocking filter you want to use in your LUNT H-Alpha Etalon System.

The B1800d2 is incorporated in a 90° zenith prism. For 2'' eyepiece focusers in the telescope case and with a T2 ring connection at the eyepiece end and 1.25'' eyepiece. The B1800d2 can be used with LUNT H-Alpha systems where the telescopes used have a 2'' eyepiece focuser and a focal length of up to 1620mm.

The blocking filter cannot be used without an additional H-Alpha filter system from Lunt Solar Systems! Blocking filters are necessarily required to ensure the safety and functionality of the H-Alpha telescopes for solar observations. The Lunt Solar Systems blocking filters form a unique filter system. We can only guarantee your safety and the full functionality of your telescope, if you use the blocking filter in conjunction with an original H-Alpha filter or a Lunt Solar Systems H.Alpha telescope.

TECHNICAL SPECIFICATIONS:

PROPERTIES

• Blocking filters can only be used with an additional H-Alpha filter system
• Filter diameter: 18mm
• For telescopes with a focal length of up to 1620mm
• In the 90° zenith prism housing
• 2'' sliding tube for use with 2'' eyepiece focuser
• Mount for 1.25'' eyepieces
• T2 ring for camera connection

DELIVERY CONTENTS

• B1800d2 locking filter on the 90° zenith prism for 2'' eyepiece focusers

• Color: white
• Material: Aluminum