Episode 217

In this episode of the Observers Notebook podcast, host Tim Robertson talks to the ALPO Lunar Section Coordinator and Editor of the Lunar Observer newsletter.

You can contact David at:
drteske@yahoo.com

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan


The Observers Notebook- The Lunar Observer

Episode 219

In this episode of the Observers Notebook podcast, host Tim Robertson talks to Bob Lunsford about his process for observing and photographing the recent transits of Saturn’s moon Titan.

Titan’s Orbit and Motion:
•	Orbital period around Saturn: ~15.945 Earth days
•	Average distance from Saturn: ~1.22 million km
•	Orbital inclination: ~0.3° relative to Saturn’s equator (small, so Titan’s path is nearly aligned with Saturn’s rings).
•	Apparent size: ~0.8 arcseconds (tiny, only detectable as a “point” in most telescopes).
•	Shadow transits are possible only when Saturn’s rings are edge-on (every ~15 years).
•	September 20, 2025 — Start around 5:09 AM UTC (≈10:09 PM PDT); ends ~7:34 AM UTC (~12:34 AM PDT); Titan may also be visible near its shadow. 
•	After October 5–6, 2025, this spectacular phenomenon won’t happen again until 2038–2039.

You can contact Bob at:
lunro.imo.usa@cox.net

Stellarium
https://stellarium.org/

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan




The Observers Notebook- Titan's Transit of Saturn

Episode 218

In this episode of the Observers Notebook podcast, host Tim Robertson talks to the Director of International Observe the Moon Night, Staci Horvath. 

You can contact Staci at:
staci.l.tiedeken@nasa.gov

International Observe the Moon Night:
https://moon.nasa.gov/observe-the-moon-night/

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan




The Observers Notebook - International Observe the Moon Night

TRACKLIST: 
Deron - Put a Record On
Tony Touch - Apaga la luz ( Jesús Fernández) 
FL3X - El Salvador (Latin Afro House) 
Nolek - Ke Tu Kiere
KIWAKE - DJ BURLAK Remix
Alpo, KOFA - This is House
Opalya - DJ BURLAK, Danny Slim 
Al Hawa - Eran Hersh, Mili, DiMO (BG
Dame Un Grr - PROVI Remix
FLAMA - Aaron Sevilla, Andres Matheus, Monserrat
Money - Hot Since 82 Remix
Music vs Trompeta - Cesar Castilla VIP Edit) 
Ma Tnsani - Yalla Habibi feat. AYA.SYSTEM Vanco 
Dunes - Jamek Ortega 
Oi Male- DJ Burlak 
Life is Simple (Move your Body) - Marshall Jefferson, Maesic , Salome Das
Sunshine 2025 - Tomaz, Filterheadz, Hot Since 82
Osama - Zakes Bantwini, Kasango

KLOSTERBERG 2025 / @playworldofficial

Episode 220

In this episode of the Observers Notebook podcast, host Tim Robertson talks to the Director of Astronomy Outreach for the International Astronomical Union, Kelly Blumenthal. 

You can contact Kelly at:
blumenthal.kelly@oao.iau.org

International Astronomical Union:
https://www.iau.org/

https://iau.org/WG330/WG330/Home.aspx

public@oao.iau.org

iauoutreach.org

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan


The Observers Notebook - Kelly Blumenthal, IAU Outreach

Episode 221

In this episode of the Observers Notebook podcast, host Tim Robertson talks to Bob Lunsford about the upcoming Orionids, Taurids, and Leonid’s Meteor Showers.

You can contact Bob at:
lunro.imo.usa@cox.net

American Meteor Society
https://www.amsmeteors.org/meteor-showers/meteor-shower-calendar/

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan


The Observers Notebook-Orionids, Taurids, and Leonids Meteor Showers

Episode 102025

In this episode of the Observers Notebook podcast, host Tim Robertson talks to the ALPO Comets Section Coordinator Carl Hergenrother.
Carl comes on the podcast to discuss Comet Lemmon and Swan.

You can contact Carl at:
carlhergenrother@gmail.com

ALPO Comets Section blog:
http://www.alpo-astronomy.org/cometblog/

In the Sky- Guides to the night sky
https://in-the-sky.org/

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan



Observers Notebook - New Coments in the sky!

Episode 222

In this episode of The Observers Notebook Podcast, host Tim Robertson sits down with Alberto Anunziato, an ALPO Lunar Observer from Argentina. Together, they explore the fascinating intersection between art and science in lunar observation — how detailed sketches made at the eyepiece can capture fleeting features of the Moon, aid in scientific study, and preserve the personal experience of observation.

Is sketching an artistic pastime or a scientific tool? Alberto shares his insights, techniques, and passion for visual recording of lunar phenomena, reminding us that even in the digital age, a sketch can reveal what a camera may miss.


You can contact Alberto at:
albertoanunziato@yahoo.com.ar

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan

The Observers Notebook- Sketch or Science? The true value of Lunar Drawings

“Unveiling Uranus: The Ice Giant in the Amateur’s Eye”
How backyard observers are helping unlock the mysteries of Uranus.

Episode 224

In this episode of the Observers Notebook Podcast, host Tim Robertson talks with Richard Schmude, the ALPO Uranus Section Coordinator, about how amateur astronomers are playing a vital role in unraveling the mysteries of Uranus, the distant ice giant of our Solar System.

They discuss the latest observations, imaging techniques, and brightness studies that are helping to expand our understanding of this often-overlooked planet. Learn how backyard telescopes, patience, and dedication are contributing to professional research—and how you can get involved in observing Uranus through the Association of Lunar and Planetary Observers (ALPO).


You can contact Richard at:
schmude@gordonstate.edu

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan

The Observers Notebook Podcast- Unveiling Uranus: The Ice Giant in the Amateur’s Eye

Episode 223

Don’t Miss the Show: The Geminids Light Up December 2025

In this episode of the Observers Notebook Podcast, host Tim Robertson welcomes Bob Lunsford, Meteor Coordinator for the Association of Lunar and Planetary Observers (ALPO), to discuss the upcoming Geminids Meteor Shower.

They explore what makes the Geminids one of the most reliable and spectacular meteor displays of the year, including tips on when and where to observe, expected activity rates, and how to record your observations for ALPO’s Meteor Section.

Whether you’re a seasoned observer or just beginning your stargazing journey, this episode will help you make the most of this dazzling celestial event.


You can contact Bob at:
lunro.imo.usa@cox.net

American Meteor Society
https://www.amsmeteors.org/meteor-showers/meteor-shower-calendar/

For more information you can visit the ALPO web site at:
www.alpo-astronomy.org/

You can also support this podcast at Patreon:
https://www.patreon.com/ObserversNotebook

Listen to the podcast on Soundcloud:
https://soundcloud.com/observersnotebook

Subscribe on our YouTube Channel:
https://www.youtube.com/c/AssociationofLunarandPlanetaryObservers

Subscribe on iTunes:
https://itunes.apple.com/us/podcast/observers-notebook-the-alpo-podcast/id1199301885?mt=2

I want to thank the Producers of this podcast, Steve Siedentop and Michael Moyer for their generous support of the Observers Notebook.

Our Patreons:
Jerry White
Jason Inman
Bob Lunsford
Steve Seidentop
Stephen Bennett
Michael Moyer
Shawn Dilles
Damian Allis
Carl Hergenrother
Michael McShan
Michael Blake
Nick Evetts
Stan Sienkiewicz
Carl Hergenrother
Stan Sienkiewicz
John Rogers
Jim McCarthy
Stanley McMahan

The Observers Notebook- Don’t Miss the Show: The Geminids Light Up December 2025

The Association of Lunar and Planetary Observers was founded in 1947 and promotes observing of the solar system. Both amateur and professional astronomers work together to further our understanding of the universe.

Driven by passion and powered by groovy basslines, Stefan Raul knows how to electrify the dancefloor. His sound captivates not only electronic music lovers but anyone ready to feel the beat.
Hooked on DJing from an early age, he has been perfecting his craft ever since—shaping unique sets and winning over diverse crowds along the way.
Since 2018, Stefan has been a regular in Basel’s vibrant nightlife, where he continues to push boundaries and spread his signature musical style.

New tracks tagged #alpo