Alan Rogers

Observing on 14th August at Rosliston

Had a really good time at Rosliston last night. Everything seemed to go safely and smoothly (after we managed to get in!)

The gaps in the clouds made it worth going and Jupiter and Saturn kept us company for much of the time. The owls were hooting and planes going over head. The odd meteor made us happy too.

It was great be able to chat and chill together. Thanks to Heather for organising it, and to everybody who attended.

Alan and Angella Rodgers

The Moon, Saturn and Jupiter

 

Looking out of the window on the 1st August at 23.31 BST I spotted a gap in the clouds. It was just enough to let us snap this shot of the Moon with Saturn and Venus. Just used my compact camera, so pleased it even came out. Hope you can spot Jupiter, it looks rather like a speck of dust on my sreeen.

We are looking forward to trying for the various things Andy described in his description of the month ahead (at the Microsoft Groups meeting.)

Angella and Alan

Comet Neowise

Went out last night in Tamworth and managed to get the telescope onto Comet Neowise. It was an achievement, but I think I liked the view through binoculars just as much. I was delighted that after my posting on my FaceBook page at least 4 of my friends and relatives went out and looked at it too. Two close friends came to the garden last night, bringing warm clothes and their own binoculars. It was great to see how delighted they were with what they saw.

Sadly it looks like we won’t get a chance to see it tonight. Perhaps the forecast for tomorrow night might be exaggerating the cloud cover. Hope so.

Comet Neowise from Tamworth

We were delighted to see Comet Neowise very clearly through binoculars at about 11pm on the evening of 19th July 2020. We followed the bottom right line of Ursa Major and there it was, just where it was supposed to be. As it got darker the comet stood out very clearly. There was a clear core-like section at the bottom, and a long tail pointing upwards. It was icy white.

So pleased we persisted. Sadly our photo we took with a smartphone was just a reminder of the direction we looked. We didn’t capture the actual comet.

See its location here – https://www.nasa.gov/feature/how-to-see-comet-neowise/ . It will be closest on 22/3 July, and then will be about 64 million miles away.

Angella and Alan Rodgers

Observing in Lichfield on 10-11 July 2020

Had a super time with Andy observing (socially distanced) in his garden. We had great view of the moons of Jupiter and the rings of Saturn. Saw lots of other objects in the sky too. Andy is so deft at finding things. It was fun to introduce his neighbour to the night sky too. He was quick to pick things up and was soon using an app on is phone to identify what he could see in the sky. Thanks to Andy for inviting us.

We had the added drama on the way home of seeing a lorry extricate itself from the railway bridge by Lichfield City Railway Station! Good job it was 2am-ish, so not many of us waiting for it to clear the bridge.

This feeble picture of Saturn and Jupiter will remind us of the evening! Shame I didn’t capture the splendid views we saw through the telescope!

Angella and Alan Rodgers

Observing Log 6/3/2020 @ 22:00-7/3/2020 @ 00:30 – The Moon

Observing Log 6/3/2020 @ 22:00-7/3/2020 @ 00:30

Andrew Thornett, Alan and Angella Rodgers

Lichfield

  • Orion UK 10” Dobsonian Telescope
  • Explore Scientific 14mm & 9mm 100-degree AFOV eyepieces
  • Tele Vue Ethos 6mm eyepiece
  • Tele Vue Big Barlow x2

As a night with predicted cloud cover around 50%, this was a poor choice for astrophotography. A bright 10-day old moon meant that most of the deep sky was washed out, plus cloud quickly passed through obscuring faint objects as we tried to find them. It therefore seemed a poor choice for an evening of astronomy. However, Angella and Alan came around and the three of us spent a wonderful time observing the moon. Usually, we “experienced” amateur astronomers reject the moon but it such a wonderful object with so much detail. Tonight, we took the time to eke out more detail than I have seen before on the moon….not because I couldn’t but rather because I didn’t and after tonight’s experience I feel that this was an error on my behalf – I intend to spend far more time in the future getting to know our close celestial neighbour! I can see now why Patrick Moore used to spend so much time looking at it from his dark skies in Selsey with his 15” telescope when he could have looked at other things.

I also discovered tonight that I still adore my first love of visual observational astronomy – over the years I have done radio astronomy, astrophotography, spectroscopy, amateur telescope making, and all those are great in their individual ways, but getting out there with the telescope and eyepiece under the stars cannot be matched! Wow! Wow! Wow! I also love the Dobsonian telescope – so simple to use and set up, and such great stable views – although does need quite a lot of star-hopping skills but then I enjoy doing that too. No circuit boards to die, limited dependency on batteries (illuminated finders mainly and your torch!)

We also used good old-fashioned printed moon atlases tonight. In particular, we used two books tonight: (I) Thierry Legault and Serge Brunier’s New Atlas of the Moon 2006 which gives large labelled photographs of the moon day by day throughout its cycle and close-ups of particular regions, and (II) Antonin Ruke’s Atlas of the Moon 1990 – this latter very famous tome (mine is the much cheaper first edition) has vast numbers of labelled drawings of different areas of the moon.

We started our journey by identifying Phocylides and Wargentin craters – that make up a Ginger biscuit man shape (2 circles of slightly different sizes close together and easily picked out against other craters). We tried to identify both small craters between these two – but one was over side of moon so could not be seen.

From there we hopped to the ray crate Tycho, and followed the two parallel rays down to crater Bullialdus with its central peak which we could easily see. We then hopped to Gassendi and spent a lot of time on this crater. We could identify a breach in its side wall but had difficulties seeing all the features in its base that were visible on the photographs in the New Atlas of the Moon, even with the 6mm Ethos eyepiece. However, when I added in my 2x Big Barlow to give magnification 400x (1200mm focal length on scope) then they became visible and the view was amazing!

Wikipedia gives a description of the crater which accurately describes the view we saw, “Gassendi is a large lunar impact crater feature located at the northern edge of Mare Humorum. It was named after French astronomer Pierre Gassendi. The formation has been inundated by lava during the formation of the mare, so only the rim and the multiple central peaks remain above the surface. The outer rim is worn and eroded, although it retains a generally circular form. A smaller crater – Gassendi A – intrudes into the northern rim, and joins a rough uplift at the northwest part of the floor. The crater pair bear a curious resemblance to a diamond ring. In the southern part of the crater floor is a semi-circular ridge-like formation that is concentric with the outer rim. It is in the southern part where the rim dips down to its lowest portion, and a gap appears at the most southern point. The rim varies in height from as little as 200 meters to as high as 2.5 kilometers above the surface. The floor has numerous hummocks and rough spots. There is also a system of rilles that criss-crosses the floor, named the Rimae Gassendi. The fresh crater Gassendi A is adjacent to Gassendi to the north.” (https://en.wikipedia.org/wiki/Gassendi_(crater))

The rilles, in particular, could not be seen with 6mm eyepiece but became visible with 3mm eyepiece (6mm+2xBarlow). We weren’t going to stop until we saw those – so were very pleased with ourselves when we got them!

The main issue with 3mm eyepieces (6mm+2xBarlow) was that (even though the Ethos has 100 degree AFOV) the image shot across the field of view, giving little time to take it in before we needed to nudge the scope – the main failing of a Dobsonian telescope in my view.

From Gassendi, we dropped down to Copernicus, and thence to the Sinus Iridum, which stretches from the east at Cape Laplace to Cape Heraclides on the west. This required the 6mm eyepiece before we could start to see detail in the mountains around the edge of the sinus. What a view! Incredible! So beautiful and full of wonder. We could also see ghost craters within it, and this led to a discussion between us on the history of the moon, when one crater forms, gets filled with lava and then new craters occur within the same area without lava filling them.

Andy

Museum of the Moon installation in Derby Cathedral

Thanks to a tip off  at RAG on Friday we went on Saturday to Derby to see the Museum of the Moon installation in Derby Cathedral. It was an amazing amd moving experience. It is still on for a few more days, and is well worth a visit. Further details can be found at this link – http://www.derbycathedral.org/about-us/what-s-on/478-museum-of-the-moon.html

Angella and Alan

Trip to Jodrell Bank radio observatory 4/9/2019

Angella and Alan from RAG took me today to Jodrell Bank. We were accompanied by another of their neighbours and friend, Liam.

Jodrell Bank houses the Lovell Telescope (Mark I) and other radio telescopes and was the brain child of Sir Bernard Lovell.

I remember last visiting the site as part of a RAG trip around 10 years ago and following the planet trail (a scale model of solar system that involves running around trying to find the planets at scale distances from the Mark I telescope) with my son Rhys, who must have been around 6 at the time.

The activities available for visitors have increased significantly since then and more are planned for the future with a new visitor building about to be built.

Andy