At Agena Astro, we're committed to helping our customers understand the many options available for telescopes and accessories for astronomy. That's why we take the time to produce detailed and useful guides to choosing astronomy equipment for visual astronomy, astrophotography, and solar observing. Some of these guides are short and are intended to solve particular issues such as product installation or maintenance. Others are more detailed to help you make the best choice for accessories and upgrades such as focusers, astronomy cameras, and filters. You can find a list of our current guides at the links below. We'll continue to add new guides in the coming months.
If you still have questions, or if you have an idea for an astronomy product guide, please get in touch with us.
1. Visual and Imaging Filters
2. Finders and Guidescopes
3. Focusers
3.2 Customer Installation Photos (Feb 2015)
3.3 Upgrading a GSO Single-Speed Focuser to Dual Speed (Dec 2013)
3.4 Optimizing the Performance of your GSO Crayford Focuser (Jan 2014)
3.5 Attaching a Finder Telescope to a GSO Crayford Focuser (Apr 2014)
3.6 Upgrading the Focuser of Your Schmidt-Cassegrain Telescope (Apr 2018)
4. Solar Observing and Equipment
4.2 Solar Astronomy 101 (Jun 2022)
4.3 Frequently Asked Questions About Baader AstroSolar Film Filters
4.4 Making Your Own Solar Filter Using Baader AstroSolar Film (PDF File)
4.5 Baader AstroSolar Film Technical Specifications
4.6 Cleaning AstroSolar Film
4.7 The Baader ASTF White Light Solar Filter (Sep 2015)
4.8 An Observer's Checklist for the August 2017 Total Solar Eclipse (Jun 2016)
4.9 A Guide to Viewing the Total Solar Eclipse of 2017 (Feb 2017)
4.10 How to View the Annular Eclipse 2023 (Jun 2023)
4.11 How to Make A Solar Filter for Viewing A Solar Eclipse (Sep 2023)
6. Eyepieces / Binoviewers
6.2 Choosing an Eyepiece - Step by Step (Jan 2016)
6.3 The Lederman Optical Array LOA-21 3D Eyepiece (Jun 2016)
6.4 Tele Vue DeLite 5-9-15mm Eyepiece Review (Aug 2016)
6.5 The Baader Hyperion Mark IV Zoom Eyepiece – A Performance Review with Monoviewing and Binoviewing (Jan 2018)
6.6 Baader Morpheus 17.5mm Eyepiece Review (May 2018)
6.7 The Baader Planetarium Morpheus (Aug 2018)
6.8 How to Choose Eyepieces for Your Astronomy Telescope (Nov 2018)
6.9 Guide to Choosing Eyepieces for Binoviewers (Apr 2017)
6.10 Field Test of the Baader Maxbright II Binoviewer (May 2020)
8. Diagonals
9. Observing Guides
10. Telescopes
11. Barlow Lenses / Focal Extenders and Focal Reducers
12. Miscellaneous
12.2 Holiday Gift Guide (Dec 2017)
12.3 ZWO Atmospheric Dispersion Corrector - Product Review (Sep 2016)
12.4 A Review of the Vixen 2.1x42 Super Wide Constellation and Kasai Trading 2.3x40 Wide Field Binoculars (May 2018)
12.5 An Introduction to Electronically-Assisted Astronomy (EAA) (Jun 2018)
12.6 ZWO ASIAIR PRO WiFi Controller – Field Notes and First Impressions (Apr 2020)
12.7 A Beginner's Guide to Choosing Equipment for Deep-Sky Electronically-Assisted Astronomy (EAA) (Jun 2020)
12.8 Celestron Smart Modules - StarSense Autoalign, SkyPortal WiFi, and SkySync GPS Module (Jun 2018)
12.9 A Primer on Back Focus in Astronomy (Jul 2021)
12.8 A 3D Printing Q&A with Astrodymium and BuckeyeStargazer (Oct 2021)
12.10 A Review of the ZWO ASIAIR-Plus Controller (Oct 2021)
12.11 Exploring Astrophotography with William Optics Telescopes (Feb 2022)
12.12 The Agena AstroProducts Buyer’s Guide to iOptron Mounts (Jun 2022)
12.13 A Primer on T-Rings and T-Adapters for Astronomy and Astrophotography (Jan 2023)
13. Blogs
13.2 Top Night Sky & Astronomy Events in November 2021 (Nov 2021)
13.3 Top Night Sky & Astronomy Events in December 2021 (Dec 2021)
13.4 Top Night Sky & Astronomy Events in January 2022 (Jan 2022)
13.5 Top Night Sky & Astronomy Events in February 2022 (Jan 2022)
13.6 Top Night Sky & Astronomy Events in March 2022 (Feb 2022)
13.7 Top Telescopes & Setup For Galaxy Season (Mar 2022)
13.8 Top Night Sky & Astronomy Events in April 2022 (Apr 2022)
13.9 2022 Total Lunar Eclipse: Round 1 (Apr 2022)
13.10 Top Night Sky & Astronomy Events in May 2022 (May 2022)
13.11 Top Night Sky & Astronomy Events in June 2022 (May 2022)
13.12 Top Night Sky & Astronomy Events in July 2022 (Jul 2022)
13.13 Top Night Sky & Astronomy Events in August 2022 (Jul 2022)
13.14 Choosing the Best Telescope for Beginners (2022 Guide) (Sep 2022)