Welcome to www.JimsCosmos.com the new home for ngc891.com

How I made my 18" Dobsonian

Fully Interactive Star Charts, Tirion Charts, Messier Charts and more...

Deep Sky Catalogues, Messier, Caldwell, Herschel 400, Loughton List, and more...

See what is in the Sky Tonight, Planisphere, Lunar Phases, Auroral activity and more...

Interactive Star Charts, Catalogues, Planisphere, 18" Dobsonian and more.

18" Dobsonian ATM

Details of how I made an 18" Dobsonian, including plans, construction notes, hints and tips...

Star Charts

Fully Interactive Star Charts, Tirion Charts, Messier Charts and more. Downloadable as PDF's...

Catalogues

Deep Sky Catalogues, Messier, Caldwell, Herschel 400, Loughton List, and more. Download as PDF's and Excel documents...

Current events

See what is in the Sky Tonight, Planisphere, Lunar Phases, Auroral activity and more...
Welcome to www.JimsCosmos.com this site contains a selection of my personal astronomical content. Click on any of the links at the top of the page or images above to navigate to the appropriate place. I'm an amateur astronomer and have tinkered a little in this and that. This site contains some images I've taken through a variety of telescopes. Details of how to build a 457mm (18") Dobsonian Telescope and some interactive star charts, aimed at my own personal preference of using Tirion's Sky Atlas 2000.0 in the field, and keeping a list of what I've observed over the years. There are individual charts for the Messier Catalogue, Caldwell Catalogue and the Herschel 400 Catalogue, see the Star Charts page for more information. These catalogues can be downloaded as spreadsheets and PDF documents. There are also individual finder charts for objects (e.g: Messier 45) and constellations (e.g: Orion).
As an amateur astronomer I get asked a wide variety of questions, especially when people find out I'm a computer scientist, these usually boil down to which software do I recommend, so I've included a media page which lists this information along with links to various podcasts, books, music and so on.

I hope you find the content of this site useful, if you want you can also drop me a line with any comments or suggestions you may have (or any issues you spot, this is a redesign of my site so probably still has a few teething problems, so be please be patient).