日珥/H-alpha
【Lunt】LS50THa 50mm口径日珥镜
发表时间:2016-04-08  浏览次数:

LuntSolarSystems - Solar Telescope LS50THa 50 mm H-Alpha with B400 Blocking Filter and Pressure Tuning System

The LS50T is a refractor-based system with a 50 mm aperture and an internal-mounted etalon with Pressure Tuner adjustment. This system allows for a <0.75 Angstrom band pass.


Specifications:
  • Type: Single Interference Etalon
  • Tuning: Internal Pressure Tune (Doppler True Tuning)
  • Aperture: 50 mm
  • Focal Length: 350 mm
  • F Ratio: f/7
  • Bandpass: <0.75 Angstroms @ 656 nm
  • Focuser: non rotating Helical Focuser
  • Mounting: Integrated clamshell with 1/4" photo thread
  • Color: Pearl White with Black and Red accents
  • Diagonal: B400 Blocking Filter


Delivery contains:
  • Telescope with B400 Blocking Filter

 

Please note:

You will find inside the box an additional black T-thread adapter ring. Please retain it for future modifications. This T-thread adapter might be needed for imaging. The manufacturer Lunt-USA is looking to possible making some adapters to make imaging with the LS50THa telescope easier. Right now it will not reach focus on DSLR cameras. It will reach focus with some CCDs and webcams when you remove the eyepiece-holder from the blocking-filter diagonal. You will find there also a T-thread at the blocking-filter diagonal. 

Specifications:
Type of telescope:
H-Alpha Solar Telescope with integrated Etalon
 
Color:
black / red / white
 
Band Pass:
< 0.75 Angström @ 656 nm
 
Blocking Filter:
4 mm Diameter
 
Focuser:
Helical Focuser non rotating 9 mm Focusing Travel
 
Connection to eyepiece:
1.25" / T2 Thread / Backfocus 15 mm from T2 Thread, 39 mm without Barrel max.
 
Aperture:
50 mm
 
Focal length:
350 mm
 
Focal ratio:
f/7
 
Weight:
4.6 lb
 
Length:
370 mm
 
Diameter:
90 mm + Pressure Tuner 75 mm