NexStar Resource Site
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Home | NexStar User's Guide | NexStar Observer List | Downloads | PC/Mac/Tablet/Smartphone Control
Odds and Ends | Firmware Versions | Equip Reviews | Alignment Guides  | Manuals | Links
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Welcome to the NexStar Resource Site -
THE Internet Resource for All Models of NexStar, CPC, Evolution, Astro Fi, SkyProdigy, LCM, CGE, CGE Pro, CGEM and AS-GT Telescopes!

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The NexStar User's Guide II
for the LCM, SLT, SE, CPC, SkyProdigy and Astro Fi with Complete Coverage of StarSense and SkyPortal

The NexStar User's Guide was the first all-NexStar book in print. The second edition is fully updated to include detailed information for the LCM, SLT, SE, CPC, SkyProdigy and Astro Fi models. It also covers the StarSense system and the SkyPortal app in detail. Visit the NexStar User's Guide section of the website to view the contents, excerpts from the book, updated information and links to the resources discussed in the book.

Thinking of introducing someone (or yourself) to amateur astronomy?  A NexStar SE or SLT scope and The NexStar User's Guide II are the perfect solution.  You get a great beginner's scope and a book that will help you learn both the scope and amateur astronomy.


NexStar Observer List (NSOL)
is a free PC control program for all models of  NexStar, Evolution, SkyProdigy, CPC, LCM, CGE, CGE Pro, CGEM, CGX/CGX-L, AVX, AS-GT and Ultima 2000 scopes, as well as Tasco StarGuide scopes.  Click here to read more and download the latest version.


This site is devoted to the computerized "GoTo" telescopes from Celestron. Most of the models feature a computer hand control as standard equipment allowing the scope to automatically GoTo objects in its generous database. They track objects automatically as well.  Basic information about these scopes is available at the Celestron web site, but this site is a collection of information not found anywhere else. Two other great sources of information are the many Celestron-related Yahoo Groups and Cloudy Nights forums, (see Links above).

Clear Skies!
Mike Swanson


Click Jupiter to see my modest attempts at astrophotography:


This web site recognized by Griffith Observatory as the recipient of their Star Award for the week of 25 Apr - 1 May 2004.  Star Awards recognize "excellence in web sites that promote public awareness of astronomy...making the sky more accessible."

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What's New?

  • Equipment Reviews updated 18 Mar 2019 - added a review of the new StarGPS-NX GPS receiver for Celestron scopes
  • Troubleshooting WiFi Connections updated 5 Mar 2019 - added info about Celestron's new 3rd generation SkyPortal WiFi module
  • NexStar User's Guide II updated 1 Mar 2019 - added article about internal communications of Celestron computerized telescopes
  • NexStar User's Guide II updated 21 Feb 2019 - added article about the COSMOS 90GT telescope
  • Links updated 14 Feb 2019 - added Astronomy Forum, an online discussion forum site
  • NexStar User's Guide II updated 22 Jan 2019 - added article about the new Celestron Focus Motor
  • Odds and Ends updated 15 Jan 2019 - added an article about scope accessories
  • NexStar User's Guide II updated 8 Jan 2019 - added article about the backlight settings for the hand controls
  • Odds and Ends updated 3 Dec 2018 - added a fully illustrated article by Gary Zapotoczny on the disassembly and reassembly of the Evolution mount
  • Odds and Ends updated 19 Nov 2018 - updated the article about GPS link problems adding an article by David Craig regarding discoveries about this issue on the newest GPS equipped scopes
  • PC Control updated on 19 Nov 2018 with new article discussing CPWI
  • Firmware Versions updated 1 Sep 2018 - updated the "how to" upgrade article for the NexStar+ and StarSense hand control to include a link to Mike Clements' article on upgrading firmware using a Linux computer
  • Software/Apps Compatible with Celestron Telescopes updated 21 Aug 2018 - added Sequence Generator Pro and WiFi Scope
  • Links updated 21 Aug 2018 - added Sirius Technologies, makers of telescope cases
  • NexStar User's Guide II updated 10 Jul 2018 - added articles about SkyProdigy external computer connection issues and SkyProdigy firmware updates
  • Odds and Ends updated 22 May 2018 - added an article about mount capacity to the sections for alt-az mounts with removable optical tubes (for example, the SLT and SE series)
  • Firmware Versions updated 17 May 2018 - Celestron has released new firmware for the CGEM and CGE Pro mounts
  • Odds and Ends updated 27 Apr 2018 - added an article discussing trouble focusing an SCT after installing StarSense
  • Odds and Ends updated 16 Mar 2018 - added section for StarSense AutoAlign
  • NexStar User's Guide II updated 9 Mar 2018 - added articles about factory settings and dealing with problems after firmware updates
  • Manuals updated 6 Mar 2018 - added sections for the Evolution, SkyProdigy, Astro Fi, SkyPortal WiFi Module and StarSense AutoAlign
  • Odds and Ends updated 20 Feb 2018 - added section for the SkyProdigy
  • Odds and Ends updated 30 Jan 2018 - added section for the Astro Fi

This site has been visited more than 2 million times since its introduction in November 2000

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Michael Swanson
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