Io casts a shadow.

Last night there was an Io transit, between 20h 48m UT - 22h 48m UT.

Perfect timing, as the skies were cloud free.

With help from my old friend Tal1, I managed the above sketch......

Io was clearly visible, hovering as it did above the South Equatorial belt....

That little Tal1 always makes me smile...... for example:  Io is about the same size as our Moon, plus it's some 430 million miles away at the moment, yet my little Russian scope can see the shadow it casts onto Jupiter's clouds....  !

All done with a 110mm mirror.....!!  :0)

I'm looking forward to capturing the other three Galilean moons.....  

Clear Jupiter Skies

Mark...

..

The Gwdihw serenades the Gibbous Moon...

Early yesterday evening the clouds filled the skies, I thought there was to be no observing .....  thankfully I was wrong.

At around 10.00pm the clouds parted, and the gibbous Moon and Jupiter could be seen softly shining through a thin veil of mist. 

Due to the brightness of the Moon, I could only make out a handful of stars.

To the South, Sirius was peeping through the trees, Procyon was shining happily above the tree line, whilst Orion was snagged almost waist height in the tops of the trees at the end of the garden.

To the North, I could make out the shape of the Plough and also Polaris.

Kochab and Pherkad "the Guardians of the Pole" were also prominent.  

Apart from spotting Aldebaran and Capella; not much else of the starry night could be seen.. my targets for the evening where.... Jupiter and the Moon....

The 13 day waxing Moon was bright enough for my observations to be noted without the need of torch or candle....

After taking several shots of the Moon with the Tal1, and digicam, I moved onto trying a sketch of Jupiter...

Unfortunately Jupiter wasn't in a cooperative mood.  

Very little detail of the planet's belts were seen through the eyepiece...

But to make up for the lack of planetary detail... I was rewarded with a lovely arrangement of the Galilean moons.....

I was in and out of the observatory for about half an hour. In that time the mist cleared enough to reveal a clearer Moon, but no extra stars were seen... 

In the distance on the village boundary, I could hear an owl calling to the night....  serenading to the bright Moon no doubt... I was glad to once again hear the song of the Gwdihw*

It's officially Full Moon on Sunday morning around 5.00am.....

No doubt, like many others Luna-tics, I'll be awake early Sunday morning staring out of the bedroom window looking at lovely Selene.. 

Clear Lunar Skies 

Mark......

*The Welsh word for owl is Tylluan... but there is an alternative Welsh word....  Gwdihw... pronounced "Goody Who".

Clarkson on the Moon....

I felt the cold last night in the observatory ...especially in my feet...

Even though the observatory floor is made of wood, I could feel the chill rising up through my boots....

I think it's time to put on some thicker socks.

Never mind, it was worth the discomfort to capture the gibbous Moon...  :0)

Along the terminator last night Gassendi was most prominent. A friend once commented that Gassendi looked very much like a tortoise or maybe a turtle.

You can easily see the shape of a tortoise, with the crater Gassendi A being the tortoise's head...

I prefer to use the alternative name for Gassendi A .... that being Clarkson.

Roland Clarkson (1889-1954) was a lunar astronomer from Suffolk UK.

Between 1906 and 1954 Roland spent may years dedicated to the pursuit of lunar observing and sketching.

Then in early 1954, in recognition of his many years of  lunar study and sketching, the crater Gassendi A was renamed in his honour.




Unfortunately the International Astronomical Union has since removed the name of Clarkson as it was felt that he wasn't well known internationally....!!!!

What a load of nonsense...!!

I will continue to use the name "Clarkson' in memory of this most prolific of Moon mappers.... :0)

Clear Lunar Skies

Mark.... 

Gibbous Moon, igloos - it's warm by the fire.

Around 8.00pm the clouds cleared to reveal a lovely gibbous Moon high up in the sky.

After training the Tal1 onto the lunar surface, I was able to capture these afocal shots with the digicam:

Through the eyepiece at X169 the central mountain peaks of Eratosthenes, distinctly look like three tiny domes - maybe they're igloos built by the Selenites !

At x169 Clavius looked beautiful through the Tal1 - I was inspired to try a quick sketch.

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Jupiter Observation

I also managed to capture the gas giant in graphite.

It was cold out there in the observatory tonight, half an hour was enough for me.

After making the Jupiter sketch it was time to pack up, and get back to the warm fire in the living room.

Jupiter sketching under a hazy sky...

I was out observing Jupiter yesterday evening, specifically looking for the Great Red Spot, which was transiting the Central Meridian at about 21h53m UT.

I was in the observatory about twenty minutes before that C.M. Transit, with pencil and paper at the ready.

During the observing session, I couldn't confirm that I saw the GRS, but there was a distinct gap in the South Equatorial Belt, which I figured was most likely due to the paler colouring of the GRS.

It was a  hazy evening with mostly only 1st and 2nd magnitude stars on show. 

By about 10pm the haze and clouds finally blotted out the stars. 

I've a few lunar pictures from earlier in the evening to put on, but they can wait till the next post.

Last Night's Jupiter sketch.

Seeing: Antoniadi III

Last night was cold and windy, and the fast moving clouds were also playing havoc with my Jupiter observations.

Tal1 did a good job of dampening down the vibrations of the gusting wind - even at X169 the image was pretty well vibration free.

I decided to make a brief sketch and then get back to the warm fire as quickly as possible to draw up my results.

Here is the finished sketch in pencil.

Tal1 captures the Great Red Spot.

Just before supper last night, I had a quick look through the telescope.

Jupiter was shining brightly over in the East, so I trained the scope onto the King of the planets.

With the 15mm Kellner and X3 Barlow I was able to up the magnification to X169.

Considering the pretty poor seeing I was surprised to see any detail on the gas giant.

Whilst observing I thought I saw the great red spot.

It was only just visible through my 110mm reflector.