Rob Leonard

SGL Star Party 2018

Ken and I, plus RAG junior members Ben and Sam decided to brave the wild weather of Storm Callum this weekend and attended the Stargazers Lounge star party at Lucksall in Herefordshire. The weather gods co-operated in the standard way for pre-organised astro events and laid on some gale force winds, torrential rain and almost complete cloud cover, but this didn’t stop the whole thing being a lot of fun.
A marquee was set up for the event and some excellent talks were provided, including a very interesting one on sub millimetre astronomy, the limits of our current knowledge and how we’re pushing against them.
In addition there were a few practical activities laid on including rocket making and virtual reality exploration of the ISS and Comet 67p, plus some unofficial events:
– Welsh whiskey sampling (It’s a thing, apparently, and very nice too!)
– Watching ever larger pieces of debris glide past on a very swollen River Wye. We thought the mature Oak tree would be the largest, but then a pontoon with several large canoes still attached went flowing past.
– Speculating on whether the campsite would actually flood- the water was only a foot or so beneath the top of the defences when we left this morning.

There was also around an hour last night where the weather gods were clearly distracted and the cover broke a little and we played a game of pointing the dob at the gaps in the cloud as some of the easier to spot objects made an appearance. Altogether we managed to share views of the double-double, Bodes & Cigar, Andromeda, the Ring, the Double Cluster (easily the best sight, given the conditions), Albireo and Mars- albeit on a now you see it, now you don’t basis. Despite this, it was a great craic doing it with like-minded folks.

Fingers crossed next year there won’t be the same clash with the IAS- it would be great if more of us could enjoy both events.

 

Imaging Sadr and Observing the Veil

Good night on Tuesday- managed to get a good imaging session in as well as some observing. The picture is of Sadr/Gamma Cygni from 20x 300 seconds plus bias, darks and flats.

Had the dobs out whilst this was going on, first star hopping with Sam to the Hercules cluster and the Double cluster then alone after his bedtime. From the observing log:

West and East Veil- superb. Sinuous strands, beautiful. Spent a long time sweeping back and forth.
N America nebula- found Mexico but rest was a struggle.
Andromeda group. M31 dark lanes were visible in the 35mm eyepiece, first time from home.
Pleiades- first sight this year.
M33 pinwheel- v v faint. 20 minutes to find. Not worth it!!!
Kemble’s cascade & ngc1502

Observing and Imaging 17th September

Imaging

It’s been a sparse few months for imaging. As well as the short nights of the summer months I’ve also had a few problems with my DSLR, plus the roads around my house have all been fitted with tall bright LED lights (see photo below, showing how much bigger they are) rendering my light pollution filter useless and limiting me to subs <1min. To fight back I’ve invested in the new version of the IDAS filter which offers some relief, plus a second hand Canon 600d with the IR filter removed. Monday was my first chance to use it, and I decided to go for M31 for the purposes of comparison with previous camera and streetlights. After setup I had an hour to try it out and the results are quite promising- I think I’ve gained more from the new kit than I’ve lost from the LEDs. There are some further things that I can do to improve it (I think I can get away with longer exposures, plus I want to try and make a cooling unit for it)- but altogether I’m quite pleased. It’s 20x 180s exposures on a 130 pd-s, with guiding, plus dark, bias and flats.

Observing

Whilst the imaging rig was doing its stuff I went for some instant gratification with the Dob. Whilst the LED lighting has hurt the imaging it seems to be better for the visual. At a RAG meeting a while back there was discussion of how counting stars in Pegasus would give you a good indication of your light pollution levels. I went home and found I had a depressing big fat zero. Although the new lights are brighter, they are better directed and I can now see 3 or 4 (faint) stars. This realisation was a good start to an enjoyable session- transparency seemed pretty good, and I doubt there’ll be another session this year where it’s too warm for a jacket. From the observing log:

M71 – Struggled to get my eye in to start with and I found it a tricky find, but satisfying once in.
M15 – Really bright central core and with a ring of resolved stars around it covering around a quarter of the eyepiece at 220x
M2 – Was tighter and not quite so bright or widespread but still a nice view
M52 – Gorgeous open cluster- 30-40 bright stars and many much fainter ones. Tried it at 220x, 70x and 45x and the middle magnification was the best- really filling the view. Highlight of the night.
NGC7789 – Caroline’s Rose – Another nice open cluster- but quite faint, and I couldn’t really see the rose. Maybe it’s like one of those Magic Eye pictures.
M103 – A nice triangular shaped with a lovely red quite central in the Eyepiece.

Monday night’s a bit early in the week to stay up late, and the only downer was packing up as the skies were getting better still. At least I was heading to bed with a full memory card ready for the clouds and rain that have dominated the remainder of the week…

 

Observing Report 15th July – 12:30-3am

Had a fun evening with family and friends at an outdoor concert, but on returning home and seeing the sky looking absolutely pristine the temptation to slip out into to the garden was too much to resist… Having spent the evening with a choice of 3 bars to try out I decided I was a bit too “relaxed” to get the imaging gear out so I made it a purely visual session with 14 inch dob and Baader 8-24 zoom.

Mars- really large and bright, but still no detail visible except for the polar cap.
M13 – It’s nice to start with a familiar target to get a feel for the skies, and although it wasn’t properly dark and the sky was a bit wobbly from the hot day, it was a fine view.
M51 – The 2 cores were easily visible but I was initially unable to see any spiral structure. I put a Neodymium filter in and it helped a bit, but altogether it just wasn’t dark enough.
At this point I became distracted by a bat that spent a while flapping about directly over my head.
M31 – bright core, again with the filter I was able to spot some dark lanes, but I really want to have a go at this target at a darker site.
M32 – really bright & easily seen.
M110 – very faint and quite a challenge; I needed a couple of goes and some help from SkySafari to look in exactly the right place.
Vega – Blue and bright and beautiful in the eyepiece. Realised that when these photons started their journey I was sitting my finals…
Double-double – despite the evenings refreshments no more than 4 stars were visible here. An easy split at 200x.
M57 – wonderful crisp views. I did spent some time looking for the central star but was unable to find it.
M56 – a slightly tricky find and more of a smudge after the beauty of M13
Albireo – Gorgeous.
M27 – the dumbbell. A month ago I picked up a second hand Oiii filter from Astro Buy&Sell. The improvement in the contrast was terrific, but more than that, I was able to see the shape very easily. Obviously there was no colour, but otherwise it was almost photographic- a brilliant view.
North America nebula (ngc 7000). Spent quite a long time trying to pick this up in the scope, with & without filters, but no joy. However, I could see it (just) in the finder. This felt somewhat unlikely, but I went back and forth between the finder, the EP and Sky Safari and there was a very faint nebulosity in the right place and of the right shape, so I’m pretty sure I had it. Would be good to validate with someone else…
The Veil – I’ve never seen this before, but the Oiii filter seemed to help a lot. The eastern portion was very faint, but definitely visible. The western side was a wonderful sinuous strand much bigger than my field of view and I spent ages sweeping back and forth trying to pick out individual filaments. A real highlight.
NGC6826 – Blinking planetary nebula – a managed to miss this a couple of times before realising the clue is in the name. A gorgeous green, despite the now lightening sky.
NGC884/869 – Double cluster – lovely way to finish the session, it’s amazing just how many stars are visible in this section of sky, with lots of colour- especially the oranges!

From my log it’s been the best part of 2 months since I was able to look at something other than planets, it was great to get back to it! Lets hope the great weather continues as the nights draw in a little.

 

A Full Moon…

Away in Wales at the moment and regretting not bringing a scope (this wold have been so much better); but here’s a picture of tonight’s full moon taken through a 300mm zoom lens. A bit of a crop, but no other editing- the reddish colour is a reflection of the sunset.

Looks good through the 12×70 binoculars as well!

Rob Leonard

Needle and M13

Ebay has finally yielded some new tougher bolts and replacement battery for my mount so I couldn’t resist the lure of some clear skies on Sunday night. Given that it was a school night and it didn’t get dark enough until after 11, I thought I’d try and do it Roger-style with shorter exposures on my little ZWO camera (sadly I didn’t have any double glazing facing the right way for this).

As well as borrowing Roger’s approach I also borrowed one of his recent targets as I’m quite taken by the Needle Galaxy at the minute, along with M13.

Needle is a stack of 35x 20 second exposures. I had gain at 500 for this and it was very noisy and I had to process it to within an inch of it’s life to get something out of it.

M13 is a stack of 80x 7 second exposures- the same gain, but the shorter exposure/more subs seemed to help, and in comparison it fell out of the camera and processed itself (OK- I exaggerate).

Started imaging at 11:15 and done and dusted and in bed an hour later! Hopefully will get another go at this on a darker night and with more time to play…

Observing Report – 13/5/18

Between a cheap power pack, the infamous Skywatcher bendy bolts and the fact it’s so late before it gets dark, I’m very much visual only at the moment. Last nights efforts:

Part 1- 10-11pm before properly dark:

          Venus

          Jupiter- very wobbly with poor seeing and still too low in the sky. Only 2/3 bands really visible and the moons distinctly fuzzy.

          Epsilon Lyrae – the Double double. Still low in the sky but reasonably easy to split all four stars.

          M13 & M92– Spent quite a long time on this trying different magnifications. The sweet spot seemed to be about 300x, able to resolve stars down to the core, but without too much fuzziness.

          Ceres – Just a point of light, but a nice hopping challenge from Leo. I’ve put a hands free phone holder onto the end of my scope which means I’ve got Sky Safari right next to the finder and eyepiece. The scope is heavy enough that it doesn’t unbalance it too much and it really helps being able to jump back and forth between map and the actual view.

 

Part 2 – 11-11:30 pm dark enough for faint fuzzies…

          Leo Triplet 1 – M65 and M66 were bright enough to see the cores and shape quite clearly. NGC 3628 much more of a challenge and only with averted vision and knowing exactly where to look.

          Leo Triplet 2 – M96, M95, M105 – all 3 were faint but visible, but not the 2 companions to M105

          Sombrero – the failure of the night- seemed to be just behind a tree!

          The Needle Galaxy- wanted to check this out following Rogers picture last week. Tried very hard to see the dark lane, but couldn’t conclusively do so, although the shape and central bulge were both clearly visible.

          Melotte 111 – this was an accidental find in the finder when looking for the needle- very pretty!

Part 3 – 11:30pm-midnight… the bit where I tried to gather the will power to pack up despite the beautiful improving skies and kept telling myself one last object before bed…

          M57 Ring nebula – wonderfully clear, could see shading. Couldn’t quite see the central star, despite a long observation

          NGC6826 – Blinking Planetary Nebula

          Albireo

          Back to M13- even better against the darker sky.

          Jupiter- now much higher and steadier; 6/7 bands clearly visible, moons now nice and crisp.

Finally to bed. Felt like a long one at work today! Trying to convince myself that it’s not another clear night tonight…

Observatory dome repair session 7/5/2018

A group of us met at the yard at Rosliston Forestry Centre for our latest session getting the dome ready for the observatory. Led by our stalwart observatory lead, Ed Mann, ably assisted in the coffee department by Heather, the team stuck strips of material along the seams between fabric lining on the fibreglass panels of the observatory roof, and Ed installed the first of Julian’s new prototype roller bearing assemblies for the observatory sliding telescope door. I took pictures and looked on whilst others worked hard! No room for me at the inn – or at least no room in the observatory dome for me as well as everyone else! I did not mind – I got sun-burnt yesterday at the Science Day and my arms were a bit sensitive! I know……..a man’s excuse – I may as well have said I was suffering from man-flu!

Andy

Message from Ed:

Well, once again, many thanks for all who turned out for this next stage of the refurb. We’re getting to the final stages now, with just the chain/ motor mechanism to be refitted, the internal surface to be sprayed, and any remaining fibreglass tape to be fitted (Yes, we ran out of adhesive again, but that was due to damage in the post). There is another 2.5 L pot on its way and I’ll order some more disposable brushes and gloves etc.

As Andy said some time ago, this is a great focus for the group, and we definitely had some funny moments again yesterday. Two of these for me were when you could see the realisation dawning on Damien when the milky, inoffensive copydex-like adhesive suddenly turns into a ravening beast that wants to stick you to anyone and anything around you. It’s pretty impressive glue

Secondly was a comment that Paul B made when about how quiet it had gone (we were all busy). After seeing Damien’s world record attempt to see how many things he could stick to his hands, I said ‘Maybe Damien has glued his mouth together as well’. All I heard was a muffled ‘Mmh Hmmm’ from inside the dome but it sounded funny at the time

As you can see from the photo, we were all hard at work that morning!

Ed