NB75 (NASTRO Binocular 75) Observing Challenge
The NB75 is an observing challenge for beginners. The list of objects - star clusters, nebulae, galaxies and more - are graded from easy to very challenging. They are all visible from Northumberland with binoculars (and in many cases - with no optical aid).
The complete list with details for each object is given in the Excel spreadsheet below.
| nb75_2019.xlsx |
Here are the lecture notes (PDF) from Adrian Jannetta's introductory talk about the NB75 challenge at NASTRO on July 28th 2021:
| nb75.pdf |
And below - you can watch a recording of Adrian's presentation at NASTRO.
You may wish to log your observations in a systematic way (rather than just ticking them off the list!) The Saguaro Astronomy Club (SAC) has some log templates on their website:
