Sunday, 8 November 2026

A little ramble through You Tube - Cannes Venatici the Hunting Dogs

 https://youtu.be/m_AldL1teAo

This constellation was added to the sky by the Polish astronomer Johannes Hevelius who was not only an astronomer but the major of Danzig. Hevelius invented 10 new constellations in the northern sky, astronomers today still use seven of them. It was in 1687, that Canes Venatici or the hunting dogs were created. According to myth the hunting dogs were being held by the Herdsman Bootes  and it is suggested that this may be to prevent them from chasing the two bears around the celestial pole.


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There are 88 constellations in the night sky, 48 are regarded as classical in that they were known to the astronomers living thousands of years ago. The other 40 are called modern. These were added during the 1500s, 1600s and 1700s.Many are in the southern hemisphere which were unknown to Europeans.

People tend to use the Greek myths and legends with the classical constellations; the modern ones have no myths or legends attached to them.

Most of the star names used are Arabic 


Cooke Telescope Tales - Franklin Adams Charts

John Franklin Adams photographed the entire night sky between 1904 and 1909 from Godalming in Surrey for the northern hemisphere and from South Africa for the Southern Hemisphere using a 10 inch Cooke camera and two 6 inch Cooke cameras. 

In 1913 the Royal Astronomical Society undertook to publish a small number of the Franklin Adams Charts. The 206 photographic plates covered the entire sky. Each plate covered an area 15 degrees by 15 degrees.  

The reproductions were on bromide paper 15 inches by 12 inches with the plate area being 11inches by 11 inches. The cost of each set will be 10 guineas in 2026 this would be over £1,400!! 

It is hoped that a sufficient number of subscribers will be enlisted to help to defray the cost of such an expensive undertaking. It is hoped that they will be ready in 1914. 

Today the Franklin Adams Charts are still use by astronomers due to their quality and their historical reference to the night sky over 100 years ago.


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Saturday, 7 November 2026

A little ramble through You Tube - Camelopardalis the Giraffe

 https://youtu.be/neqkcZFqy6E

Camelopardalis the Giraffe is without doubt one of the dullest of the northern constellations. 

Broadly speaking Camelopardalis fills the area of space between Capella in Auriga, Polaris the North Star and Cassiopeia. It has been said that if you come across an area of sky with nothing in it, you have located the Giraffe!

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@https://open.spotify.com/show/0Q56h7UWOw3qOgKnXsOqnb

There are 88 constellations in the night sky, 48 are regarded as classical in that they were known to the astronomers living thousands of years ago. The other 40 are called modern. These were added during the 1500s, 1600s and 1700s.Many are in the southern hemisphere which were unknown to Europeans.

People tend to use the Greek myths and legends with the classical constellations; the modern ones have no myths or legends attached to them.

Most of the star names used are Arabic


A little ramble through the Astronomical Register April 1864- meteors

 Astronomical Register April 1864

SHOOTING STARS.

TO THE EDITOR OF THE ASTRONOMICAL REGISTER.

 Sir, In your last number you inserted a letter from Mr. A. S. Herschel upon Shooting Stars. Allow me to offer a few remarks upon this subject so closely connected with Astronomy. It is the opinion of some that these bodies, and meteors generally, are at a considerable distance from the earth, and also that they are composed of solid matter. I have reason to doubt this and think that very frequently they are dependent upon conditions of atmosphere or gases held in suspension in the atmosphere.

Many years ago, I noticed in the harbour of Valentia, in Ireland, one dark night, a small meteor pass over the harbour; the length of its path possibly half a mile, its altitude about 200 or 300 feet. I judged it to be upwards of a mile distant from me. It was not very bright.

Again, in 1855, I was crossing the Alps, by the pass of the Mount Cenis, in the middle of December, and I was astonished at the number, the brilliancy, and apparent proximity of the small meteors. They so illuminated the inside of the diligence in which I was travelling, that, so far as my recollection serves me, I could have read large print. The windows were frozen over, so that I could not observe them as I should have wished, and the frost was so intense, that my moustache was a mass of icicles if exposed to the air for two minutes. These meteors occurred principally at about the highest part of the pass, 6,700 feet above the sea, which we passed about two hours after midnight. So far as I can remember they did not pursue any set direction, from or to any cardinal point, but appeared promiscuously from all points of the compass.

Regarding the proximity of larger meteors, I would notice one that I saw in June 1863. It was about half an hour before sunset, the sun shining brightly. I noticed a brilliant meteor passing from west to east, the nucleus about one - sixth the diameter of the moon, but much brighter, and having a long tail of sparks diverging somewhat from the nucleus; its rate of progression was moderately slow. What made the meteor so conspicuous was, that its path was projected across a bank of dark grey cumulus cloud; this cloud I estimated at not more than four miles from my position, and the meteor apparently was nearer to me than half that distance, and its length from the earth might have been 700 feet, more or less. I heard no noise whatever; its path was parallel to the surface of the earth. It continued visible for three or four seconds, during which time it passed over an azimuth of about 15 °. I offer these facts to your readers who take an interest in Meteorology for their consideration, hoping that they may prove interesting, if not useful.

I beg to remain, Sir, Yours obediently, Uckfield, Sussex. FREDERICK BRODIE.


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Friday, 6 November 2026

A little ramble through You Tube - Caelum the Chisel

 https://youtu.be/nwiZNzApZjg

If I am being generous, I would say that the constellation of Caelum is rather faint, if I am being honest, it is one of the most obscure of all the 88 constellations. It is one of the 14 constellations created by the French astronomer Nicola Louis de Lacaille 1713-1762, it first appeared in his catalogue in 1763, and it is one of 14 constellations that he created while he was working in South Africa.

Originally called Caelum Sculptorium the Engravers’s Chisel, today it is referred to as just Caelum. It is a winter constellation that can be seen very low in the sky as seen from Britain below Orion the Hunter and to the east of the constellation of Lepus the Hare. 


@https://www.theramblingastronomer.co.uk

@https://www.ramblingastronomer.bsky.social

@https://www.linkedin.com/in/martin-lunn-mbe-fras-45383831/

@https://theramblingastronomer.blogspot.com/

@https://open.spotify.com/show/0Q56h7UWOw3qOgKnXsOqnb

There are 88 constellations in the night sky, 48 are regarded as classical in that they were known to the astronomers living thousands of years ago. The other 40 are called modern. These were added during the 1500s, 1600s and 1700s.Many are in the southern hemisphere which were unknown to Europeans.

People tend to use the Greek myths and legends with the classical constellations; the modern ones have no myths or legends attached to them.

Most of the star names used are Arabic 


A little ramble through Reticulum the Net

A small and very inconspicuous constellation introduced in the 1750s by Lacaille to commemorate the instrument known as the reticule which he used for measuring star positions on his surveys of the southern skies. The best example of a reticule is if you look through a telescope and you see lines that help you target the star you are looking for. These are usually referred to as cross hair wires.

The first reticule or cross hair wire was invented by Willaim Gascoigne in the late 1630s. It happened by accident when a spider got into one of his telescopes and spun its web. Gascoigne realised that the web could be used as a “cross hair wire”. In fact, spider web technology was used in optical instruments until the second world war. Today synthetic materials are used.

Its only notable feature is that it lies close to the Large Magellanic Cloud.

As it is a modern constellation there are no myths or legend attached to it. There is only one bright  stars. 

Alpha magnitude 3.3 its G8 giant star with a temperature 5,000’C and is 161 light years away.


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Thursday, 5 November 2026

Cooke Telescope Tales - occultation of delta 3 Tauri in 1870

On November 9th 1870 John Joynson of Waterloo in Liverpool observed an occultation of delta 3 Tauri. Delta 3 is one of the members of the Hyades cluster of stars that are near to Aldebaran in Taurus. Joynson was using a 6 inch Cooke telescope.

 An occultation occurs when the Moon passes in front of a star blocking out the light from the star. Very occasionally a planet will pass in front of a star. This happened in 1977 when Uranus passed in front of a star leading to the discovery of its system of rings. 

According to Joynson the Moon passed over this star and the disappearance took place at 11 hours, 19 minutes and 11.3 seconds. The star reappeared at 12 hours 16 minutes and 50.7 seconds. The observations were considered very satisfactory.


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