• DMCA
  • Disclaimer
  • Privacy Policy
  • Cookie Privacy Policy
  • Terms and Conditions
  • Contact us
Inter Space Sky Way
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy
No Result
View All Result
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy
No Result
View All Result
Inter Space Sky Way
No Result
View All Result
Home Astronomy

The Ellison Reflector 1912  – Astronotes

October 5, 2024
in Astronomy
59 3
0
The Ellison Reflector 1912  – Astronotes
74
SHARES
1.2k
VIEWS
Share on FacebookShare on Twitter


You might also like

The JWST Spies The Uncooked Supplies For Exomoons

‘The Mandalorian and Grogu’ trailer could be very trendy, however we nonetheless don’t know what the film is about (video)

The Asteroid Belt’s Sluggish Disappearing Act

Fig. 1. Rev. Ellison as he appeared on the frontispiece of the 2nd version of The Novice’s Telescope

Rev. W.F.A. Ellison 

Rev. William Frederick Archdall Ellison was the sixth Director of the Armagh Observatory and was appointed to the function on 15 October 1918. He would stay on this place till his demise on 31 December 1936. Throughout that point, he made a number of telescopes and mirrors, each for the Observatory, and to complement his earnings, which was very low in comparison with different Astronomers in the UK. He had been making mirrors for twenty years when he arrived in Armagh and had constructed up a status as by publishing articles and pamphlets about telescope-making in The English Mechanic and different periodical journals.  

Fig. 2. The Ellison Reflector because it seems in The Amateurs Telescope (1920)

He stored an in depth optical pocket book, which stays within the archives of the Armagh Observatory and Planetarium. This means he could have made properly over 2 hundred mirrors, and dozens of full telescopes. They have been made for shoppers in Japan, the USA of America, France, Australia and lots of different nations, in addition to some nearer to house in Northern Eire. Only a few have survived into the twenty-first century, and none remained within the Armagh Observatory and Planetarium. As of 2024, just one handcrafted Ellison telescope has been recognized and remains to be useful.  

The Ellison Reflector 

The final identified Ellison rejoined the gathering of the Armagh Observatory and Planetarium in September 2024. This was due to the assist of the Esme Mitchell Belief, and the proprietor, Keith Venables. Keith discovered the telescope in East London, in 2009, trying considerably worse for put on after ninety-seven years. He restored the telescope over a number of years, and documented the method on his web site: The Rev. WFA Ellison telescope | AstroKeith 

Fig. 3. The Ellison Refractor, again in Armagh after a century

The telescope is a 6.25-inch reflector, which is likely one of the smallest sizes that Rev. Ellison provided for public sale. He initially started to supply them on the market within the early 1900’s, for the value of £3.10s (about £450 at the moment). This was for simply the mirror, the tube, stand and eyepieces would all must be sought out, or made by the customer. This instance was featured in his well-known guide The Novice’s Telescope (1920) which was tailored from a collection of articles he revealed in 1918 in The English Mechanic. The Ellison Reflector was included in determine 29 for example how an alt-azimuth stand might be made cheaply and successfully from discarded furnishings legs. 

Ellison mentions that the tube and mount have been made for the telescope by an engineer on the Nice Southern and Western Railway yard in Inchicore, Dublin. No additional info is understood in regards to the maker, however the design, because the tripartite supporting construction for the mirror, is referenced in The Novice’s Telescope.  The telescope was discovered with a single eyepiece nonetheless within the focus aperture, a Steinheil-München eyepiece, seemingly just a few many years older than the telescope itself. That is additionally prone to be the unique eyepiece, as a number of comparable Steinheil-München eyepieces are a part of the Armagh Observatory and Planetarium historic assortment.  

We all know the telescope is an Ellison as a result of the again of the mirror is engraved with “Wm. F. A. Ellison” and “WFAE” engraved between two shamrocks. Farther from the optical notebooks we all know that Ellison recognized his mirrors by pairs (and later trios) of Greek characters. The mirror on this telescope was recognized as λ ζ (Lambda Zeta) 1912. Ellison was fluent in Greek, Latin, French and Hebrew, and likewise shared an curiosity in different languages with astronomers corresponding to William John Roberts (William John Roberts – Engineer, Astronomer, Linguist and Theologian – Astronotes (armaghplanet.com)).  

In September 2024 the telescope was delivered to the Armagh Observatory and Planetarium by Keith Venables, to rejoin the gathering of scientific devices and archives. Julian Ellison additionally visited to see the telescope and is the Nice-Grandson of the Rev. W.F.A. Ellison. Julian had beforehand visited the Observatory along with his father to donate a lot of the archival materials that survives on the Ellison household, which in flip has made a lot of the historic analysis into the interval 1918-1937 attainable.  

Armagh Observatory and Planetarium want to thank the Esme Mitchell Belief for making this acquisition attainable and to Keith Venables for his excellent dedication and cautious work restoring the telescope to its unique situation.  

 

Fig. 4. Prof. Michael Burton (Director of Armagh Observatory and Planetarium), Keith Venables and Julian Ellison with the Ellison Reflector.



Source link

Tags: AstronotesEllisonReflector
Share30Tweet19

Recommended For You

The JWST Spies The Uncooked Supplies For Exomoons

by Chato80
October 2, 2025
0
The JWST Spies The Uncooked Supplies For Exomoons

Planets and moons are inseparable companions and whereas astronomers are unravelling the complexity of planet formation, moon formation stays mysterious. Our Photo voltaic System is absolutely fashioned, so...

Read more

‘The Mandalorian and Grogu’ trailer could be very trendy, however we nonetheless don’t know what the film is about (video)

by Chato80
October 2, 2025
0
‘The Mandalorian and Grogu’ trailer could be very trendy, however we nonetheless don’t know what the film is about (video)

It has been six lengthy years since a "Star Wars" film lit up theater screens, not counting this previous summer time's "Star Wars: Revenge of the Sith" rerelease...

Read more

The Asteroid Belt’s Sluggish Disappearing Act

by Chato80
October 1, 2025
0
The Asteroid Belt’s Sluggish Disappearing Act

The asteroid belt is discovered orbiting between Mars and Jupiter and is an unlimited assortment of rocks that's regarded as a planet that by no means fashioned. When...

Read more

October Night time Sky 2025 – Astronotes

by Chato80
October 2, 2025
0
October Night time Sky 2025 – Astronotes

October’s Night time Sky: The Final Halloween Occasion  Come one, come all to witness the final word Halloween occasion hosted by our evening sky! Admission is free and...

Read more

JWST delivers 1st climate report of close by world with no solar — stormy and coated with auroras

by Chato80
October 1, 2025
0
JWST delivers 1st climate report of close by world with no solar — stormy and coated with auroras

The most recent climate forecast does not come from Dublin, London or New York — it comes from deep house, the place a lonely world drifts and not...

Read more
Next Post
Proba-3 double satellites set for launch following final take a look at

Proba-3 double satellites set for launch following final take a look at

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Browse by Category

  • Alien
  • Astronomy
  • NASA
  • Space
  • Space Flight
  • UFO

Recent News

JWST captures clearest-ever picture of M87 galaxy’s supermassive black gap jet

JWST captures clearest-ever picture of M87 galaxy’s supermassive black gap jet

October 3, 2025
Vast-field surveys versus exact infrared observations: how Rubin compares to JWST

Vast-field surveys versus exact infrared observations: how Rubin compares to JWST

October 3, 2025
China’s Tianwen 2 asteroid-sampling spacecraft snaps a selfie with Earth

China’s Tianwen 2 asteroid-sampling spacecraft snaps a selfie with Earth

October 2, 2025
The JWST Spies The Uncooked Supplies For Exomoons

The JWST Spies The Uncooked Supplies For Exomoons

October 2, 2025
UFOs-Disclosure: Dylan Borland Unloads – The Reality About Legacy UFO Packages Half 2

UFOs-Disclosure: Dylan Borland Unloads – The Reality About Legacy UFO Packages Half 2

October 3, 2025
Did 3I/ATLAS spark the 1977 ‘Wow Sign’? Similar area, simply days aside

Did 3I/ATLAS spark the 1977 ‘Wow Sign’? Similar area, simply days aside

October 2, 2025
  • DMCA
  • Disclaimer
  • Privacy Policy
  • Cookie Privacy Policy
  • Terms and Conditions
  • Contact us
INTER SPACE SKY WAY

Copyright © 2023 Inter Space Sky Way.
Inter Space Sky Way is not responsible for the content of external sites.

No Result
View All Result
  • Home
  • Alien
  • UFO
  • Space
  • NASA
  • Space Flight
  • Astronomy

Copyright © 2023 Inter Space Sky Way.
Inter Space Sky Way is not responsible for the content of external sites.

Welcome Back!

Login to your account below

Forgotten Password?

Retrieve your password

Please enter your username or email address to reset your password.

Log In