NO PARTIAL PHASE OF ANY SOLAR ECLIPSE / ECLIPSE OF THE SUN, NOR ANY ANNULAR SOLAR ECLIPSE / ANNULAR ECLIPSE OF THE SUN, IS SAFE TO LOOK AT DIRECTLY, UNLESS YOU HAVE THE PROPER TRAINING AND PROPER EQUIPMENT TO DO SO SAFELY; OTHERWISE EYE-SIGHT COULD BE DAMAGED PERMANENTLY !!! This graphic shows one way to safely view the partial phases of a Solar Eclipse / Eclipse of the Sun, or safely view an Annular Solar Eclipse / Annular Eclipse of the Sun, by building a Solar Pinhole Viewing Box (a.k.a. Pinhole Camera) as shown above. After building this box, you must turn your back to the Sun and allow the light from the Sun to go through the pinhole and shine on a white piece of paper on the other end of the inside of the box (NEVER LOOK THROUGH THE PINHOLE AT THE SUN!).
(Graphic Source: Eric G. Canali, former Floor Operations Manager of the original Buhl Planetarium and Institute of Popular Science / Buhl Science Center, America's fifth major planetarium and Pittsburgh's science and technology museum from 1939 to 1991, and Founder of the South Hills Backyard Astronomers amateur astronomy club.)
More Information - SOLAR ECLIPSE / ECLIPSE OF THE SUN: TIPS FOR SAFE VIEWING –
Link >>> https://buhlplanetarium2.tripod.com/FAQ/soleclipse/solareclipseviewingtips.html
By Glenn A. Walsh
Reporting for SpaceWatchtower
Early Thursday morning (2023 April 20), a rare Hybrid Solar Eclipse / Hybrid Eclipse of the Sun (both Total and Annular Solar Eclipse / Eclipse of the Sun) will be visible, weather-permitting, just north and west of Australia. A Live-Stream Internet Web-Cast of the event will be available for those not in the area of the eclipse, or if inclement weather prevents direct viewing of the event.
NEVER LOOK DIRECTLY AT ANY SOLAR ECLIPSE / ECLIPSE OF THE SUN, UNLESS YOU HAVE THE PROPER TRAINING AND PROPER EQUIPMENT TO DO SO SAFELY; OTHERWISE EYE-SIGHT COULD BE DAMAGED PERMANENTLY !!!
Internet link to Live-Stream Web-Cast of 2023 April 20 Hybrid Solar Eclipse / Hybrid Eclipse of the Sun near the end of this blog-post.
WHERE CAN THIS ECLIPSE BE SEEN ?
The path of the 2023 April 20 Hybrid Solar Eclipse / Hybrid Eclipse of the Sun will run from the southern portion of the Indian Ocean to just north of Australia (which will just touch the north-western tip of Australia, known as North West Cape, a remote peninsula of Western Australia). This eclipse concludes north and east of Australia. A Partial Solar Eclipse / Partial Eclipse of the Sun will be visible, weather-permitting, just beyond the confines of the Hybrid Solar Eclipse / Hybrid Eclipse of the Sun.
This eclipse will appear as a Total Solar Eclipse / Total Eclipse of the Sun in the North West Cape Peninsula and Barrow Island of Western Australia, close to the middle of the Eclipse Path. This eclipse will appear as an Annular Solar Eclipse / Annular Eclipse of the Sun. at the beginning of the Eclipse Path (at and near local Sunrise) and at the end of the Eclipse Path (at and near local Sunset).
WHEN CAN THIS ECLIPSE BE SEEN?
This rare Hybrid Solar Eclipse / Hybrid Eclipse of the Sun will be visible, weather-permitting, early on Thursday Morning, 2023 April 20. Although eclipse times will vary for specific locations, the following are the general times for this eclipse. Times are given in Coordinated Universal Time (UTC), the international time used by scientists; subtract 4 hours from the times given for Eastern Daylight Saving Time (EDT) or subtract 5 hours from the times given for Eastern Standard Time (EST). ---
First location to see Partial Eclipse begin: 1:34:26 UTC
First location to see Full Eclipse begin: 2:37:08 UTC
Time of Primary Lunar Phase of New Moon (Lunation #1241): 4:12 UTC
Greatest Eclipse: 4:16:46.8 UTC
Last location to see Full Eclipse end: 5:56:43 UTC
Last location to see Partial Eclipse end: 6:59:22 UTC
WHAT IS ---
A Solar Eclipse / Eclipse of the Sun ?
A Solar Eclipse / Eclipse of the Sun occurs when the Moon comes directly between the Sun and the Earth and part or all of the lunar shadow falls on a portion of our planet. Any Solar Eclipse / Eclipse of the Sun is dangerous to eye-sight to view directly, unless you have the proper training and proper equipment to do so safely! A Solar Eclipse / Eclipse of the Sun always occurs near and at the time of a Primary Lunar Phase of New Moon.
A Total Solar Eclipse / Total Eclipse of the Sun ?
A Total Solar Eclipse / Total Eclipse of the Sun occurs when the Path of the Eclipse includes a Path of Totality, where the Moon completely obscures the Sun for a short length of time for a particular location on the Earth which is within the Path of Totality. At the time of Totality, darkness similar to a deep level of dusk falls on that location, and sometimes scientists with special observing equipment can view Solar Flares and / or Prominences emanating from the Sun. With direct Sunlight completely blocked, the air temperature generally declines noticeably, and birds and other wildlife often begin their night-time routines.
An Annular Solar Eclipse / Annular Eclipse of the Sun ?
An Annular Solar Eclipse / Annular Eclipse of the Sun is somewhat similar to a Total Solar Eclipse / Total Eclipse of the Sun. However, unlike a Total Solar Eclipse / Total Eclipse of the Sun, the Sun is never completely covered by the Moon, for a location in the Path of Annularity, during an Annular Solar Eclipse / Annular Eclipse of the Sun. And, like during a Total Solar Eclipse / Total Eclipse of the Sun, the natural light level acts almost like at dusk, the air temperature generally declines noticeably, and birds and other wildlife are confused and may begin their night-time routines during an Annular Solar Eclipse / Annular Eclipse of the Sun.
During an Annular Solar Eclipse / Annular Eclipse of the Sun while in the Path of Annularity, the Moon blocks-out the vast majority of the Sun, except for the extremely bright edge of the solar disk. Hence, this type of eclipse is often referred to as a “Ring-of-Fire” Solar Eclipse / "Ring-of-Fire" Eclipse of the Sun, as the bright edge appears as a ring-of-fire around the dark Moon.
The reason an Annular Solar Eclipse / Annular Eclipse of the Sun does not completely block-out the Sun's light, as does a Total Solar Eclipse / Total Eclipse of the Sun, is because during an Annular Solar Eclipse / Annular Eclipse of the Sun the Moon is farther from Earth than normal and appears a little smaller as viewed from Earth. Hence, the Moon is too far, and appears too small, to block-out the entire solar disk.
A Hybrid Solar Eclipse / Hybrid Eclipse of the Sun ?
A Hybrid Solar Eclipse / Hybrid Eclipse of the Sun occurs when the eclipse begins as an Annular Solar Eclipse / Annular Eclipse of the Sun, during the middle of the Eclipse Path transitions to a Total Solar Eclipse / Total Eclipse of the Sun, then transitions back to an Annular Solar Eclipse / Annular Eclipse of the Sun as the Eclipse Path ends.
A Partial Solar Eclipse / Partial Eclipse of the Sun ?
A Partial Solar Eclipse / Partial Eclipse of the Sun occurs when only part of the Sun is blocked by the Moon. This is also true during the Partial Phases of a Total, Annular, or Hybrid Solar Eclipse / Total, Annular, or Hybrid Eclipse of the Sun. Usually, more of the Sun is still visible during a Partial Solar Eclipse / Partial Eclipse of the Sun (and during the Partial Phases of other Solar Eclipses / Eclipses of the Sun) than during an Annular Solar Eclipse / Annular Eclipse of the Sun or Hybrid Solar Eclipse / Hybrid Eclipse of the Sun.
There is no time during an Annular Solar Eclipse / Annular Eclipse of the Sun, or during a Partial Solar Eclipse / Partial Eclipse of the Sun (or during the Partial Phases any Solar Eclipse / Eclipse of the Sun), when it is safe to look directly at the eclipse, unless you have the proper training and proper equipment to do so safely!
ECLIPSE PAIRS ---
Eclipses always come in pairs, and sometimes three in-a-row. A Lunar Eclipse / Eclipse of the Moon either precedes a Solar Eclipse / Eclipse of the Sun by a couple weeks, or a Lunar Eclipse / Eclipse of the Moon follows a Solar Eclipse / Eclipse of the Sun by a couple weeks.
This time, a Penumbral Lunar Eclipse / Penumbral Eclipse of the Moon follows on Friday Afternoon, 2023 May 5. This eclipse can be viewed directly [any Lunar Eclipse / Eclipse of the Moon is safe to view with the naked-eyes (one-power), binoculars, or a telescope] from the Indian Ocean, Africa, Eastern Europe, Asia, Australia, and New Zealand. However, a Penumbral Lunar Eclipse / Penumbral Eclipse of the Moon is quite dim and often difficult to discern.
HOW TO SAFELY VIEW ANY SOLAR ECLIPSE / ECLIPSE OF THE SUN ---
Internet - Watch the eclipse on an Internet, Live-Stream Web-Cast (Internet link to Live-Stream Web-Cast near the end of this blog-post). Of course, people outside of the Path of an Eclipse can watch the eclipse on an Internet, Live-Stream Web-Cast, as well as people within the Eclipse Path where clouds obscure the view..
Public Observing Events - Sometimes educational events for eclipse viewing are sponsored by a local planetarium or science museum, astronomical observatory, science department of a local college or high school, amateur astronomy club, or local library.
Solar Pinhole Viewing Box - Create a Solar Pinhole Viewing Box (a.k.a. Pinhole Camera), as displayed and described at the beginning of this blog-post.
“Solar Eclipse Glasses” - For a few dollars you can purchase Solar Eclipse Glasses. However, only use such glasses that are specifically labeled for solar eclipse viewing, preferably approved by the American Astronomical Society (to ensure you do not purchase fake eclipse glasses). Special Note: Solar Eclipse Glasses are very fragile and must be handled gently. Also, before each use during an eclipse, check the glasses by looking through the glasses at a lit light bulb; if you find any holes or tears in the glasses, that pair of glasses could damage your eye-sight during eclipse viewing and should be discarded.
Shade Rating Number 14 Welder's Glass – Shade Rating Number 14 Welder's Glass (and only Welder's Glass Rated at Shade Number 14, the strongest shade available) can be used for safe eclipse viewing, but may be uncomfortable to some because the Sun still appears very bright through this glass.
THESE ARE THE ONLY SAFE WAYS TO VIEW ANY SOLAR ECLIPSE / ECLIPSE OF THE SUN !
INTERNET LINK TO LIVE-STREAM WEB-CAST OF 2023 APRIL 20 ECLIPSE:
Link >>> https://www.timeanddate.com/live/eclipse-solar-2023-april-20
SOLAR ECLIPSE / ECLIPSE OF THE SUN: TIPS FOR SAFE VIEWING – Link >>> https://buhlplanetarium2.tripod.com/FAQ/soleclipse/solareclipseviewingtips.html
Internet Links to Additional Information ---
Solar Eclipse: Link >>> https://en.wikipedia.org/wiki/Solar_eclipse
Hybrid Solar Eclipse: Link >>> https://en.wikipedia.org/wiki/Solar_eclipse#Types
Related Blog-Posts ---
Hybrid Solar Eclipse: 2013 Nov. 3.
Link >>> http://spacewatchtower.blogspot.com/2013/11/partial-sunrise-solar-eclipse-sunday.html
Hybrid Solar Eclipse: 2005 April 5.
Link >>> https://buhlplanetarium4.tripod.com/eclipse/hybrid2005.html
Source: Glenn A. Walsh Reporting for SpaceWatchtower, a project of Friends of the Zeiss
Monday, 2023 April 17.
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gaw
Glenn
A. Walsh, Informal Science Educator & Communicator
(For more than 50 years! -
Since Monday Morning, 1972 June 12):
Link >>> http://buhlplanetarium2.tripod.com/weblog/spacewatchtower/gaw/
Electronic Mail: < gawalsh@planetarium.cc >
Project Director, Friends of the Zeiss: Link >>> http://buhlplanetarium.tripod.com/fotz/
SpaceWatchtower Editor / Author: Link >>> http://spacewatchtower.blogspot.com/
Formerly
Astronomical Observatory Coordinator & Planetarium Lecturer,
original Buhl Planetarium & Institute of Popular Science (a.k.a.
Buhl Science Center), America's fifth major planetarium and Pittsburgh's
science & technology museum from 1939 to 1991.
Formerly Trustee,
Andrew Carnegie Free Library and Music Hall, Pittsburgh suburb of
Carnegie, Pennsylvania, the fourth of only five libraries where both construction and endowment funded by famous industrialist & philanthropist Andrew Carnegie.
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh: Link >>> http://www.planetarium.cc Buhl Observatory: Link >>> http://spacewatchtower.blogspot.com/2016/11/75th-anniversary-americas-5th-public.html
* Adler Planetarium, Chicago: Link >>> http://adlerplanetarium.tripod.com
* Astronomer, Educator, Optician John A. Brashear: Link >>> http://johnbrashear.tripod.com
* Andrew Carnegie & Carnegie Libraries: Link >>> http://www.andrewcarnegie.cc
* Other Walsh-Authored Blog & Web-Sites: Link >>> https://buhlplanetarium.tripod.com/gawweb.html
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