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

Archives

The waxing crescent Moon, oriented with Mare Crisium roughly central.

A word from the Lunar Section Director

Marking one year since formally assuming the role of Director of the Lunar Section, Dr Tony Cook discusses his enthusiasm

Read more
The sixe speakers, standing and smiling in front of a wooden wall in an interior room

2023 Historical Section Meeting

  Twenty-seven BAA members and guests attended the 2023 Historical Section Meeting, held in the Lyttelton Theatre at the Birmingham

Read more

Sky notes for 2023 October & November

Oct 29 sees the end of British Summer Time and we are deep into autumn. Nevertheless, the northern summer stars

Read more
The y axis gives the signal to noise ratio (SNR) and the x axis gives the epoch numbers. Each SNR curve starts low and tends towards a flat higher number as the epoch number increases

Image denoising in astrophotography – an approach using recent network denoising models

Image denoising is an important consideration for improving the accuracy of acquired data. Given the morphological nature of astrophotography, with

Read more
A star field containing the dwarf nova in outburst

The 2021 superoutburst of the dwarf nova LL Andromedae

We present photometry of the 2021 outburst of LL And, which was only the fourth confirmed on record, with a

Read more
The white telescope tube is mounted on an equatorial mount upon a plinth.

The New South Wales Branch of the BAA & the Sydney University Observatory

The first university observatory in Australia was opened at the University of Sydney in 1909, with help from members of

Read more
Black and white pencil drawings of Mars arranged in five rows and labelled A to T, with key features appearing as described in the caption

The opposition of Mars, 2020: Part II

A report of the Mars Section. Director: R. J. McKim. We report seasonal timings of the appearances and disappearances of

Read more
Seven drawings, labelled a to g. The first four appear yellow, red, blue and white, respectively, due to filters used. Cloud markings appear as dark smudges. The last three are in white (integrated) light, i.e. with no filter.

The 2021–’22 eastern elongation of Venus

A report of the Mercury & Venus Section. Director: P. G. Abel This paper covers observations of Venus made by

Read more
Mazin and ten schoolchildren pose by his telescope in the sun, with rugged mountains in the background

Searching for sky

  My story began with a photo. I was reminiscing over an old photo album and found a picture of

Read more
The primary mirror is face-up, with the secondary mirror unit at its centre. Both are exposed; the front corrector plate has been removed

Maintaining a Schmidt–Cassegrain

Schmidt–Cassegrain telescopes (SCTs) are versatile, compact and effective instruments for visual observing of all kinds, and for imaging of smaller

Read more
  • ← Previous
  • Next →

© 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.