Skip to content
British Astronomical Association

British Astronomical Association

Supporting amateur astronomers since 1890

  • Community
    • Community
    • Observer’s Challenges
    • Tutorials
    • Dark Skies Commission
    • BAA Alerts
    • Observing Calendar
    • Forum
    • Archives
    • Affiliated Societies
    • Outreach
    • Useful Links
  • News
    • Latest News
    • BAA Business
    • Sky Notes
  • Events
    • Events
    • Future Events
    • Previous Events
  • Publications
    • Journal
    • Book Reviews
    • Documents
      • Latest Documents
    • Handbooks
    • Buy
  • Sections
    • All Sections
    • Asteroids & Remote Planets
    • Aurora & NLC
    • Comet
    • Computing
    • Dark Skies Commission
    • Deep Sky
    • Education & Outreach
    • Equipment & Techniques
    • Exoplanets
    • Historical
    • Jupiter
    • Lunar
    • Mars
    • Mercury and Venus
    • Meteor
    • Radio Astronomy
    • Saturn, Uranus & Neptune
    • Solar
    • Variable Stars
  • Videos
    • Videos
    • Meetings
    • Dark Skies
    • Deep Space
      • Deep Sky
      • Exoplanets
      • Variable Stars
    • Hardware
      • Equipment
      • Radio Astronomy
      • Robotic Exploration
    • Solar System
      • Asteroids
      • Comets
      • Jupiter
      • Mercury & Venus
      • Outer Planets
      • The Sun
    • Terrestrial
      • Aurorae
      • Historical
      • Meteors
      • The Moon
  • Observations
    • Gallery
    • Spectroscopy database
    • Photometry database
    • Comet Section Archive
    • Solar Section Archive
    • Observing Calendar
  • About Us
    • About us
    • Join
    • Contact Us
    • Grants
    • Who’s Who
    • Awards
    • Shop
    • Donate
    • Privacy Notice
    • Terms of Use
    • Dark Skies Commission
  • Login
    • Login
    • Renew membership
    • Join the BAA

Filly lamp

› Forums › Spectroscopy › What wavelength error is acceptable with an Alpy? › Filly lamp

6 November 2018 at 6:39 pm #580192
Dr Andrew Smith
Participant

Hi Robin could you try the filly lamp at 90 deg to the correct position to see if the off axis lines mirror the behaviour of the star.

Regards Andrew 

© The British Astronomical Association 2022 Registered charity no. 210769 Registered company no. 117572 For more information including contact details, click here.

  • Home
  • About us
  • Community
  • Documents
  • Events
  • Journal
  • News
  • Sections
  • Tutorials
  • Videos
  • Forum
  • Archives
  • About us
  • Contact Us
  • Grants
  • Privacy Notice
  • Events
  • Who’s Who
  • BAA Alerts
  • BAA Business
  • Observer’s Challenges
  • Sky Notes
  • Terms of Use
Copyright © 2025 British Astronomical Association. All rights reserved.
Theme: ColorMag by ThemeGrill. Powered by WordPress.