LUNT B1800d1 Blocking-Filter in 1.25 inch zenith mirror diagonal

 

For free combination with a Lunt-Solar-Systems H-alpha solar-telescope or -filter

• Blocking-filter in 90° zenith mirror
• For combination with H-alpha telescopes or filters
• For telescopes up to 1620mm focal length and 1.25 inch focuser
• Eyepiece side with T2 thread and 1.25 inch eyepiece connection
• Cannot be used stand-alone, only with H-Alpha systems!

Blocking-filter in 90° zenith mirror diagonal, for telescopes up to 1620mm focal length, and with 1.25 inch (31.7mm) focuser. Can only be used together with a LUNT H-alpha filter, or with a LUNT H-alpha telescope!

Lunt Solar Systems offers blocking-filters in different sizes, and alternatively in 90° star-diagonal housings or straight extension tubes. You can choose what blocking-filter you will use at your LUNT H-alpha Etalon system.

The B1800d1 is installed in a 90° star-diagonal housing, for 1.25 inch (31.7mm) focuser on the telescope side, and with T2 thread and 1.25 inch eyepiece connection on the eyepiece side. The B1800d1 can be used at LUNT H-alpha systems, if the used telescope has a 1.25 inch focuser and up to 1620mm focal length.

The blocking-filter can not be used without additional H-alpha filter system from Lunt Solar Systems! Blocking-filters are absolutely required for the safety and performance of H-alpha telescopes for solar observing. Lunt Solar Systems blocking-filters contain a unique filter system. We can only warranty safety or performance, if blocking-filter is paired with a H-alpha filter or H-alpha telescope of Lunt Solar Systems.
At the tab "Accessories" you will find H-Alpha telescopes and filters with which this blocking filter can be combined.
FEATURES

• Blocking-filter only usable at additional H-alpha filter system
• Filter diameter: 18mm
• Usable at telescopes up to 1620mm focal
• 90° star-diagonal housing
• 1.25 inch slide tube for 1.25 inch focuser
• Connection for 1.25 inch eyepieces
• T2 thread for camera connection

SCOPE OF DELIVERY

• Blocking-filter B1800d1 in 90° star-diagonal for 1.25 inch focuser

 

Technical Data

GENERAL TECHNICAL DATA
Eyepiece Barrel Diameter	31.7 mm
Extended warranty	5 years
DIMENSIONS & WEIGHTS
Net weight (without access.)	340 g