ALPO Journal Download Problems? Read This

May 17 — The software glitch that prevented the hyperlink at the bottom of the DJALPO availability announcement from working has been fixed. All paid-up ALPO members who had not been able to download their copy of the spring 2024 issue of the ALPO quarterly Journal should retry.

Simply click on the link shown below, then follow the prompts to enter your e-mail address and ALPO membership number (found in a mailing to you from the ALPO membership secretary and on your own ALPO membership card).

The availability announcement is sent to all currently paid-up members of the organization plus various libraries and other research institutions upon completion of the Journal. If you believe you ARE a paid-up ALPO member but did not receive the DJALPO availability announcement, contact Matt Will, ALPO membership secretary, at to confirm your membership status.

ALPO Journals from Volume 1, Issue 1, through Volume 64, Issue 2, are currently available from the ALPO website; newer issues are in the process of being added:

  1. Go to
  2. Click on “ALPO Section Galleries” at the upper right corner of your screen
  3. Click on “Publications Section”
  4. Click on “ALPO Journals”
  5. Click on the desired volume
  6. Click on the desired issue number

Call for Observation Reports of the April 2024 Total Solar Eclipse

As the Total Solar Eclipse of 2024 becomes a memorable astronomical event witnessed by many, it will be preserved and shared by observers through documented visual observations and vivid personal recollections.  The ALPO wishes to share all the depth and nuance of this experience as well as its scientific and measured magnitude in an upcoming issue of Journal of the ALPO.

(Image here by Justin Maune taken at Kimball Bend Park in Central Texas)

Please send your observations and reports — whether they be images, drawings, diagrams, or written documentation and descriptions — to:


Reports should include the following information and data:

Observer’s name and exact location of the observation. Include an actual address, the city, state, and country or if in a rural location, an approximation, as well as latitude and longitude from where you observed the eclipse.

Date and time (Universal Time preferred) include “eclipse contacts” would be helpful.
•    First contact occurs when the partial phase of the eclipse begins
•    Second contact is when a total phase begins
•    Third contact is when the total phase ends
•    Fourth contact occurs when the partial phase ends.

Include an exact time for any specific events or observations observed with the naked eye or with instrumentation.

Instrumentation details including type of optical aid (telescope, binoculars, naked-eye, etc.), focal length, aperture (inches or mm), filter details (if used).

If imaging the eclipse, what kind of camera was used? DSLR, DSLM, webcam or CCD.  Give details (brand and model), type of lens used and focal length, exposure parameters such as aperture (f/?), ISO, exposure time and any other kind of digital enhancements.  Post processing details (capture and processing programs) should be included if applicable.

Sky conditions should include seeing (steadiness) and transparency as well as general sky conditions.  Report weather descriptions, especially from any weather instruments brought to your site.

Written descriptions and impressions are welcome too, about what was observed at various stages of the eclipse.  This can include observations during the partial phases concerning wildlife, sky darkening, shadow bands just before and after totality, and any other environmental effects.  Be sure to note the time for these events.  For totality, size, shape, and extent of the corona, prominences, chromosphere, etc. are of interest as well as sky colors, visibility of landscape, visual identification of planets, stars, etc., including weather conditions at the time.  Visual impressions of the diamond ring are welcome too.

We hope it was a wonderful eclipse wherever you were and that you will share your observations with us.  The ALPO will analyze and report these observations collectively, in an upcoming issue of the Journal.


The ALPO YouTube Channel is Now Alive!


July 10, 2020 — In another effort to expand our online presence, ALPO Podcast Coordinator Tim Robertson has started an ALPO YouTube channel. While it’s still new, here you will find videos and content — including live streaming of events and tutorials — that support the mission of this organization. To learn more about the ALPO on our YouTube channel, click on the ALPO YouTube Channel link in the upper corner of the right  sidebar on this screen.


Publications Section Bulletin

Are you looking to see if the ALPO ever covered a special solar system event that you remember? Does your current research require specific solar system observational data by the amateur astronomy community? Click Here to go to JALPO Indexes



Privacy Policy

Because you have the ability to order merchandise from an advertiser with a link on the ALPO website, we want you to know that your privacy is important to us. Click here for the text of our entire privacy statement.



ALPO 2021 Conference News
By Tim Robertson & Ken Poshedly,
ALPO Conference coordinators

Due to the continuing nearly worldwide quarantining caused by the Covid-19 pandemic, the 2021 Conference of the ALPO will be held online on Friday and Saturday, August 13 and 14. (This is to prevent a scheduling conflict with the 2021 Astronomical League Convention (ALCON 2021) which will be held in Albuquerque, NM, on August 4 thru 7, 2021.)
The ALPO conference times will be:
Friday from 1 p.m. to 5 p.m. Eastern Time (10 a.m. to 2 p.m. Pacific Time)
Saturday from 1 p.m. to 6 p.m. Eastern Time (10 a.m. to 3 p.m. Pacific Time).
The ALPO Conference is free and open to all via two different streaming methods:
The free online conferencing software application, Zoom.
On the ALPO YouTube channel at
Those who plan to present astronomy papers or presentations must (1) already be members of the ALPO, (2) use Zoom, and (3) have it already installed on their computer prior to the conference dates. Zoom is free and available at
Those who have not yet joined the ALPO may do so online, so as to qualify to present their work at this conference. Digital ALPO memberships start at only $18 a year. To join online, go to, then scroll to the bottom of that page, select your membership type, click on “Add to Cart” and proceed from there.
There will be different Zoom meeting hyperlinks to access the conference each of the two days of the conference. Both links will be posted on social media and e-mailed to those who wish to receive it that way on Thursday, August 12, 2021. The Zoom virtual (online) “meeting room” will open 15 minutes prior to the beginning of each day’s activities.
Those individuals wishing to attend via Zoom should contact Tim Robertson at as soon as possible.
The conference will consist of initial welcoming remarks and general announcements at the beginning each day, followed by papers and research findings on astronomy-related topics presented by ALPO members.
Following a break after the last astronomy talk on Saturday will be presentations of the Walter Haas Observing Award, the Peggy Haas Service Award and the Michael D. Reynolds Astronomy Award. The last one is brand new and was presented to Ms. Pranvera Hyseni several months ago in recognition for her work over the past several years to advance the public’s awareness and appreciation of astronomy.
A keynote speaker will then follow the awards presentations on Saturday. The selection of a keynote speaker is in progress and the final decision will be announced in the summer issue of this Journal (JALPO63-3).
Presentation Guidelines
All presentations should be no more than 15 minutes in length; the preferred method is 12 minutes for the presentation itself plus 3 minutes for follow-up questions. The preferred format is Microsoft PowerPoint.
Send all PowerPoint files of the presentations to Tim Robertson at .
Suggested Topics
Participants are encouraged to present research papers and experience reports concerning various aspects of Earth-based observational astronomy including the following.
New or ongoing observing programs and studies, specifically, how those programs were designed, implemented and continue to function.
Results of personal or group studies of solar system or extra-solar system bodies.
New or ongoing activities involving astronomical instrumentation, construction or improvement.
Challenges faced by Earth-based observers such as changing interest levels, deteriorating observing conditions brought about by possible global warming, etc.
Information about paper presentations, the keynote speaker and other conference data will be published in this Journal and online as details are learned.