Skip to main content Skip to search Skip to main navigation

LUNT B1200s Blocking-Filter in extension tube

With BRESSER, you can enjoy a smooth introduction to the vast world of astronomy. Our detailed information ("Telescope Guide") provides valuable tips for beginners—but even experienced astronomers can use the information we provide (e.g., tables for the geographical latitude of all major world cities) as a reference.

Here is the table of contents of the comprehensive BRESSER Telescope Guide:

Sky Guides by Bresser

The Sky Guide provides comprehensive information on constellations, planetary positions, and astronomical events – perfect for planning your observations and delving deeper into astronomy.
Visit the guide directly here to make the most of your observations!

Product information "LUNT B1200s Blocking-Filter in extension tube"

Blocking-filter in straight extension tube, for telescopes up to 1080mm focal length. 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 B1200s is installed in a straight extension tube, for 1.25 inch (31.7mm) and 2 inch (50.8mm) focuser on the telescope side, and with T2 thread and 1.25 inch eyepiece connection on the eyepiece side. The B1200s can be used at LUNT H-alpha systems, if the used telescope has up to 1080mm 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: 12mm
  • Usable at telescopes up to 1080mm focal
  • In straight extension tube
  • For 1.25 inch and 2 inch focuser
  • Connection for 1.25 inch eyepieces
  • T2 thread for camera connection
SCOPE OF DELIVERY
  • Blocking-filter B1200s in straight extension tube

Batteries required: false
Colour: black
Extended warranty (years): 2
Eyepiece Barrel Diameter (mm): 31.7
Material: Aluminium
Net weight (without access.) (g): 250