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 my introductory talk at NASTRO on March 14th 2019:
| nb75.pdf |
The PDF has a couple of interactive slides with material from the University of Nebraska Lincoln. To view these in properly in the PDF - you may have to open it using Foxit Reader (they don't function well in Adobe Reader).
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:
