Tools for the Observer

2021 

- Comet Chasing 

Aid for Observers

• Deep-Sky Marathons
• Article in Nightfall "Birth of a Deep-Sky Marathon"
• Deep-Sky Observer’s Companion Database – DOCdb
• Stellarium software
• Cartes du Ciel software
• Jet stream predictions for Southern Africa
• Deep-Sky Hunter Star Atlas  

Observing the  ASSA 100 Deepsky Objects

- Verslagvorm en waarna om op te let
- Deep-Sky Hunter Star Atlas
-  Download Discover, ConCards and Southern Star Wheel (9M)
- Download Virtual Moon 6

  - Green laser Safety (ASSA Pretoria)
- ASSA Top 100 (Deepsky) (pdf)
- Concards (Constellation Cards) 

- Sky Map- Southern Hemisphere (Download the Southern Hemisphere Edition)

- Deepsky Observer's Companion Pdf -formaat (Dankie Auke)
- Southern Star Wheel  (Download and make a  A3 printout on light carton.  It is fun!) 
- DOCdb Deep Sky Observer's Companion – the online database 
- Find the Southern Celestial Pole (SCP)

Your Telescope
- Direction in Eyepiece – Johan Smit - ASSA Pretoria

Limiting Magnitude
- Telescope Limiting Magnitude Calculator
- Limiting Magnitude Field Locator and Calculator  (Online)
- Estimating Sky Limiting Magnitude   (Online)     
- Estimating Limiting Magnitude (Online) Thx Delaware Valley Amateur Astronomers
- Limiting  Sky Magnitude (PDF- ASSA Pretoria)

Observing tools

 - SA Time server   (Set your clock accuarately)
- Beginner's tips; tutorials
- Bortle Dark-Sky Scale

- Southern Sky Map (Pdf -formaat)

- psychohistorian.org

- Southern Star Wheel Download from this page

- Sky Map- Southern Hemisphere  

- Dieplug waarnemingsverslae (Pdf -formaat)

Weather etc.

- Moon phases for Bloemfontein, South Africa
  - Wolke/Clouds

- Southern hemisphere Jetstream 
- Build Southern Hemisphere Jetstream 

- Bloemfontein (www.accuweather.com)  (Glo baie akkuraat!)  
- Bloemfontein,1398 m. ( From Sweden)

- Britstown in Northern Cape, 1121 m (From Sweden)

- Boyden Observatory, 1283 m  (From Sweden)

- Bloemfontein weather

Other

- Kaart van Mandelarylaan tot by Boyden-sterrewag

Astro Dealers in South Africa 
Telescope Shop
Foton
Celestron - South Africa
Johannesburg Planetarium