Category Archives: Observing

Observing 7th-8th August 2010

The night of Saturday 7th August into Sunday was clear, although not as good as the previous Wednesday, so I pulled the scope out for a session looking for some summer Herschel 400 objects.

Conditions:
Clear, fairly warm, around 15C
NELM 6.0
Fairly humid with quite a lot of dew
Seeing II
Transparency II
Equipment: 12″ f5 Dob, 35mm Televue Panoptic (43x), 22mm Televue Panoptic (69x), 15mm Televue Plossl (101x), 11mm Televue Plossl (138x), OIII, UHC

NGC 6834, open cluster in Cygnus – irregular, attractive cluster made up of a line of 5 brighter stars crossing an elongated haze. At 138x, most of the haze resolves into faint stars.
There’s a separate clump to the immediate south of the main cluster, a knot of 10, or so, stars and another to the north, which has six stars.

NGC 6866, open cluster in Cygnus – Large, irregular cluster. Two chains of stars extend out from centre, one to the west and the other to the right. the western one is short and contains 7 brighter stars plus fainter ones. The eastern chain is longer and contains > 15 stars in a looping pattern.
There is a wide pair to the south.

Went after NGC 7044, but this was in the ‘dob hole’ and awkward to get at. One for another night, further into autumn when Cygnus is more to the west and that part’s easier to get at.

NGC 7027, planetary nebula in Cygnus – not on the H400 list but I was in the area. I am not sure why I found this easily and not 7044, but then a PNe’s easier to recognise than one of the myriad of open clusters and knots in the Milky Way in the Cygnus area.
7027 could easily be overlooked as just another star, as it is star like. However it isn’t stellar as at 69x it looks slightly fuzzy and an OIII filter makes it really jump out as a PNe.
At 138x its oval with no obvious darkening in the centre.

NGC 7296, open cluster in Lacerta – quite small, but conspicuous cluster near Beta Lacertae. Some stars resolved at 69, more resolved at 101x.

NGC 7243, open cluster in Lacerta – large, irregular cluster which fills the field of view of the 22mm Panoptic (69x). There are at least 23 brighter stars and many more fainter ones. Nice.

NGC 7209, open cluster in Lacerta – large and quite bright. Around 40 to 50 stars resolved. A very vague, rounded ‘m’ shape.

I finished up with a trip into the North America and Pelican nebulae, using my 35mm Panoptic and 2″ UHC filter. This was lovely, with wisps and and tendrils of subtle nebulosity everywhere. Here and there, hard edges were defined. Very nice indeed.

The next morning I found that, as the air heated up in the morning sunshine (Sunday was a hot day) my mirror had condensation on it. This is not good as repeated dewings up will cause the coating to deteriorate and fail and I don’t want to have to pay out for a recoating before I get my 20″. I opened up the scope and left it to dry out in the shed, with the shed doors open.
I posted on Cloudy Nights, asking how I can prevent this and most responses involved rigging up some kind of heating system. I am going to have to pay out for a car battery, an inverter and a lamp in the first instance and then, when I can afford it, a solar panel, at least 70w. However, a cheaper solution might be a large power pack with built-in inverter. That should run a low-watt lamp for a few hours to keep the mirror dry while the outside temps rise, although I am not sure exactly how long the charge would last, although some of these machines are pretty heavy-duty things. In the meantime, I have packed a couple of socks with silica gel and hung them inside the tube near, but not on, the mirror, then sealed the scope at both ends. I also went to Sainsbury’s and bought a bag of silica gel (not clay) cat litter which I’ll decant into socks and then hang inside the scope, tomorrow. Considering that quite a few of my socks have conspired to vanish, leaving only odd ones, they can do something useful! I blame the black hole that must be lurking somewere in the washing machine. The silica gel cat litter idea was also suggested on CN, stuffed socks and beanbags are the preferred method of holding them although, apparently someone once used a stuffed animal. WTF??!!

Observing 4th August 2010

A day of intermittent heavy rain and thunder gave way to clear skies during the evening, for once exactly as the forecast had predicted. The BBC and Metcheck’s forecasts both agreed, which seems to be a rare event in itself, so as it got dark I went and unlocked the observatory (I like the sound of that!) and pulled the scope out.
Earlier in the evening I had been in a pretty awful mood, no reason just a bad day, and felt more like saying ‘sod it’ and going to bed but I am very glad I didn’t as the sky turned out to be magnificent.
All too often when you step outside and look up, what looks promising at first often proves to be pretty average, even poor, but not last night. After getting dark adapted, I checked the naked eye limiting magnitude, using charts of Ursa Minor and Cygnus, and it was better than 6.5! We have pretty dark skies here, but better than 6.5 is fairly rare. Usually we get between 6.0 and 6.5 but last night was as good as 6.7! I would guess that the heavy rain and thunder had cleared the atmosphere of pollutants and dust. During my trips to the TSP, I’ve seen people using ‘iridescence’ in the Milky Way to gauge transparency – the more iridescent the MW, the more transparent the sky. The Milky Way was just like that here last night, iridescent, which we rarely see because of summer haze. Visible to the unaided eye were M13, M31 (later on when clear of the trees) and NGC 7000, the North America Nebula These were truly great summer observing conditions and well worth the long wait for.

Conditions: Clear, quite chilly
Seeing: Very good: Ant II
Transparency: Excellent – I, but a few odd bits of drifting cloud later on
NELM: 6.5-6.7, dropping slightly when the waning crescent Moon rose later on

First was Aquila and a hunt for the few Herschel 400 objects (three) that are here:

NGC 6781, planetary Nebula in Aquila – Set in nice starry field this is large and oval and quite bright. It’s easily seen without a filter but my OIII brings it out nicely. With the OIII, the pn looks slightly rounder with some darkening in the centre, without the filter I can’t see the darkening very well. Very nice object. 69x, 101x + OIII

NGC 6755, open cluster in Aquila – An attractive, small, compressed cluster set in a nice Milky Way field. Stars all white and evenly bright. Found at 69x as a misty knot, detached from MW star field.
101x shows a tiny, vaguely triangular clump of stars, with around a dozen or so on a hazy background and with a fainter patch next to it but at 138x, the cluster looks like a butterfly with the left wing richer than the right one. Very pretty! 69x, 101x, 138x

NGC 6756, open cluster in Aquila – Next to NGC 6755 in the field of view of the 22mm Panoptic (69x). It’s half a dozen stars on a misty background. Not as rich or as compressed as its neighbour. Framed by a bight star at either end. 69x, 101x, 138x

I saw on my star charts that the globular cluster Palomar 11, also in Aquila, was nearby, and given the excellent conditions I decided to have a crack at seeing it. After quite a few false starts I eventually found it. It’s in quite a rich area and nailing it down was a bit hard. It appears as a roundish brightening of the sky. Its low surface brightness and location in quite a rich part of the sky made finding it difficult but I caught it eventually. The observation of the night, I think. 69x, 101x, 138x, 190x

I also decided to see if I could see ICs 59 and 63 in Cassiopeia. Given the great night it would have been a shame not to go for the faint stuff.

IC 59, IC 63, diffuse nebulae in Cassiopeia – These faint little buggers are right next to Gamma Cas, so it’s necessary to put that out of the field of view before attempting to look for them. IC 59 is a faint fan-shaped patch while IC 63 is fainter still – in fact I barely saw 63, just a mere brightening in the area. 69x + UHC filter.

M31, galaxy in Andromeda – this lovely piece of eye candy is one of my favourites to look at and I always drop in to say ‘hi’ when I am observing and M31 is high enough. Last night’s conditions gave me the best telescopic view I have ever had of this galaxy. Under average skies usually only the bright central area is visible but last night, I could see (using my big 35mm Panoptic, at 43x) the galactic disk spreading out across and beyond the field of view, and the dust lanes. It was spectacular, to say the least.

NGC 6229, globular cluster in Hercules – Very bright and easy to find (made a nice change from Pal 11 and the faint nebulae in Cassiopeia!). Small and round with a dense core at 69x.
At 138x, it began to look granular with some stars resolved, especially the outer ones.
At 190x, individual stars can be seen and the halo and core are very bright, still looked granular across the face. 69x, 138x, 190x.

NGC 6207, galaxy in Hercules – bright and easily seen at 69x. It is completely overshadowed by its big and bright famous neighbour, M13. Oval, with a brighter core. Elongated northeast-southwest. 69x, 101x
I also popped over to see the big showy eye candy neighbour, which was absolutely superb as usual and in the same field they make a nice pair, with the galaxy being a hidden treasure.

Before packing in, I dropped in on Jupiter, which was shining like a big searchlight in the eastern sky, as the seeing was so good, and it looked decidedly odd without the South Equatorial Belt, which has totally faded away.

By 0200, the waning crescent Moon was substantially interfering with the sky conditions and there was more drifting cloud around so that, along with the fact my feet were by now very cold (I was wearing thin trainers) made packing up a Very Good Idea. So did the prospect of work in a few hours. So within five minutes, I’d pulled the scope back into the shed, chucked my charts back in their box, gathered up my eyepieces, locked up and headed back to the house.
As mentioned in my previous post, I’d found that the addition of wheels made my scope eyepiece higher off the ground. I knew it would be higher but not *how* higher. Consequently, viewing stuff at the zenith required standing on tiptoes. This was awkward and uncomfortable, as it hurt my calf muscles and toes, so some sort of small stool was a must. I found a little plastic step stool in Tesco this afternoon, for £2.50, which will fit the bill nicely.

First light in the observatory

The new observatory has now been used for the first time. We’re on a run of crap weather, very unsettled with showers, high winds, the odd sunny spell and almost totally cloudy nights, so observing opportunities this summer have been non-existent (typically, the best weather this summer was at the end of June when the summer twilight made serious deep sky observing impossible or, at least, very difficult). However, last night was an exception, although it wasn’t very clear and there was quite a lot of cloud about.
I’d already carried the scope up the garden and installed it in its new home so it was just a case of wheeling it out and then back in at the end of the sessions – it makes life so much easier and I very much doubt if I’d have even bothered last night if I’d have had to carry the scope from the house and set up.

Here’s the inside of the observatory shed, with the 12″ under tarpaulins (these will give it that little bit of extra protection *just in case*), folding chair, box containing star charts, atlases, gloves, hat, torches and sketchbooks, my dog’s basket for her to curl up in as she always comes with me when I observe and some pictures on the wall. I also have a couple of shelves for bits and pieces. However, anything of real value, apart from my cheap reflector which isn’t worth nicking, such as binoculars and eyepieces, are staying inside the house and any potential thief wanting to lug a large and very heavy scope down the garden, past some stranger-loathing dogs and out the gate is an idiot and deserves to be arrested on grounds of stupidity. The photo’s a bit distorted, that’s thanks to the 17mm end of my wideangle lens and not because of my construction abilities!

The day before yesterday, I fixed the casters to the blocks that I was going to use to attach the wheels to the base. I bolted the wheels to the blocks using bolts, unfortunately two of the bolts sheered off rendering them useless but the rest went on ok. I just hope they can stand up to being wheeled over rough ground every clear night, as the top lawn isn’t the smoothest, what with the mole hills and vole holes, etc.
I then fixed the blocks and wheels to the base using ‘No More Nails‘, which is a type of glue which is supposed to be strong – it’s the sort of thing you see the ads for where someone’s used this stuff to put shelves up and the ad shows a man sitting on the shelves to ‘prove’ that it’s strong and won’t come unbonded (in reality, it ain’t *that* good; if it was, the soap dish would stay fixed to the bathroom tiles). I let it set overnight, for the recommended 24 hours. However, as soon as I put the rocker box on top, the wheels promptly fell off it- just like they’d fallen off my clever idea – although, fortunately the scope itself was still sitting in my room and therefore didn’t come to grief. So it was time for a rethink, which didn’t take long as it was a case of having to screw the wheels to the base. We have electric drills but I couldn’t find the drill bits, so I went across the way and borrowed our neighbour and his battery-operated drill and, between us, we got the wheels (hopefully) securely fixed to the base. Quite why I thought ‘No More Nails‘ or any sort of glue was a good idea, especially in light of our laws-of-gravity-proving soap dish, I have no idea! I think I was trying to do it the easy way, or so I thought.

Back to the quick observing session, I wheeled the scope out, collimated it and got going. The beauty of the scope being out in a shed is that cool-down times are very short and, except on hot days/nights, practically non-existent. Because of the lousy conditions I didn’t do a lot, just poked around, looking at NGC 5653 in Bootes, M14 in Ophiuchus and NGC 7006 in Delphinus. I did find, however, that the addition of the wheels and blocks raised the height of the scope by several inches and that I, and I’m not short, have to stand on tiptoe to see anything at the zenith, which is not very comfortable for extended periods of time, making prolonged observations difficult. I need to get a short stepstool for that.
I also didn’t have an observing table for my charts, etc, so I had to use the floor and, with my dodgy knee that wasn’t comfortable. I have ordered a 4ft folding table from Amazon and that should turn up tomorrow. When I observed from the patio I used to use the kitchen extension as an observatory and the top of the small chest freezer as a chart table. That is no longer practical as I am so far from the house, so the folding table should do nicely.

Conditions: Cool, no dew.
Seeing: Very good, Ant II Transparency: poor, with high clouds
NELM: 6.0, falling to 5.8 when the last quarter Moon rose, washing out the sky.
Instrument: 12″ f/5 Dob, 22mm Panoptic and 15mm Plossl

NGC 5653, galaxy in Bootes – a poor view, due to lousy sky conditions. I could just make out a roundish smudge, not a lot brighter than the background sky. Haze was interfering with this quite badly, as was the low altitude of Bootes. 69x, 101x.

M14 (NGC 6402), globular cluster in Ophiuchus – very large and bright. Round. Some condensation towards the centre. Looks smooth when looked at with direct vision, but granular, with a few stars resolved, with averted vision. The scope was effectively reduced to 6″ by the hedge – I’d not set it up in my intended place. 69x, 101x

NGC 7006, globular cluster in Delphinus – small and bright. Round with bright core. 69x, 101x. I want to observe this, likewise NGC 5653 in Bootes, in more favourable conditions.

By this time, the clouds were worse and the rising last quarter Moon was interfering with observations, so I rolled the scope back in, put my charts away and locked it. It took me a fraction of the time it used to take to both set up and put away, before it would take me a good 20 minutes, maybe more to tear down and carry everything, including the scope, inside, now I’m indoors and heading for bed within 5 minutes! This will lead to many more observing sessions and, as I said at the beginning of this post, observing under less-than-favourable conditions and/or when tired will now happen far more often. Not only that, I have far more space inside my bedroom as the Dob occupied too much of the floor.

‘Observashed’

The new shed is now in place. We started putting it up yesterday and after six hours, a lot of swearing and a few ‘teddies chucked out of prams’ (patience is not one of my strong points; fortunately the neighbours appeared to be out and thus, hopefully, did not hear an ‘f-word-every-other-word’ rant at one stage in the proceedings!) it was just about finished with only a few finishing touches to be added. I did make a couple of cock ups but it seems largely straight, secure and solid so I don’t think it’ll blow down in a gale. It also appears to keep the rain out. There was a thundery downpour this morning and, apart from rain coming in the windows as I hadn’t installed them, it looked to be bone dry with the sole exception of one side which let in a few drops in at floor level. I’ll get some sealant and sort that out. The real test will come when the autumn and winter set in and we get howling gales and driving rain. I am going to leave it for a while before I put my scope in it to see how it fares, that’ll let me see what needs doing to keep any weather out. I went to a party last night and a friend told me that any flat pack assemble-it-yourself item comes with free swear words, the amount of which directly correlates to the nature of the item and the annoyance factor of putting it up; i.e. kitchen units come with 100 free swear words, a shed like mine comes with about 100,000 while a greenhouse comes with several million!
I put the windows in this afternoon, unlike the rest of the thing there were no annoying mini-crises to put up with!

I have not done any serious observing for a while, apart from a couple of mini-sessions with the refractor on a couple of evenings two weeks back. This is because the weather is so highly variable at the moment and evenings which start off clear are not staying that way. We are having a very unsettled summer, apart from a hot couple of weeks in late June/early July. I did manage to sketch a couple of Messiers, just to keep my hand in, while cloud-dodging.

M8, the Lagoon Nebula in Sagittarius. 3.5″ refractor at 36x

M27, the Dumbell Nebula in Vulpecula. 3.5″ refractor at 36x.

I have no idea what these sketches look like on most people’s monitors. My 20″ widescreen monitor went bang just over a week ago so I took it back to PC World (who did not want to know, despite the monitor being well under a year old, so I had to resort to playing the arsey customer which, to be honest, I hate doing. I’ve worked in retail myself – it sucks) and am waiting for the repaired monitor or a replacement. In the meantime I am using an elderly borrowed 17″ square matte flat screen job which isn’t that good for picture editing or viewing. The sketches look appalling on this one, I am hoping that they look a lot better elsewhere!

I also aimed my 400mm Canon telephoto lens at the Moon the other evening – yes, you did read that right. The Moon. Not only that, it meant I was doing some astronomical imaging – the shame. ;-D
Here’s the result of that. I was quite pleased with it, especially as I was handholding the lens at 400 ISO and using a shutter speed of 1/320 sec at f/5.6. I sent a copy to my friend, the well-known author and astro-imager Robert Reeves, who sent me some feedback.
No, I am not going to become an imager, but I do like taking the odd shot now and then. It shows how desperate one can get to do something astronomical!

I have decided that I won’t mess around getting a 16″ Lightbridge. I do want a decent scope of 18 or 20 inches, so I will carry on saving and get a custom-built, quality Dob. One route, and one that I am currently investigating, is to buy an existing Dob chassis and get the optics to fit. I know someone who has a lovely one (a 20″) for sale, minus the optics. However, I’d need an f/3.7 mirror and secondary to fit it as buying a more common f/4 or f/5 would involve a bit of a rebuild, something I don’t want to get into. If I can’t easily get hold of an f/3.7 mirror for a reasonable price (i.e. comparable to that of an f/4) then I’ll probably revert back to Plan A, which is buy a custom-made dob.

From the notebooks 2 – Obscure Planetaries from Australia

Here are some more sketches from that 1997 trip Down Under. These are some of the more obscure planetary nebulae I observed on that trip. All of these sketches were made at the 1997 Queensland Astrofest at Lions Camp Duckadang, Linville, Queensland on 25/26th and 26/27th August 1997. The scope I used was a 20 inch Dobsonian.

Henize 2-111, Centaurus

Henize 2-141, Norma

Henize 2-207, Ara

Longmore 16, Scorpius

Menzel 1 (PK 322-2.1), Norma


Shapley 1 (PK 329+02.1), Norma

 

PK 322-5.1, Triangulum Australe

The observatory is still not up yet. That is because our weather has gone completely to pot and is now more like that of October than it is of mid-July. There are gale-force winds, low temperatures (17C/63F) and rain. Plenty of rain. This will please the miserable buggers who have moaned about the heat and lack of rain and who have now got their own way but I hate this crap and want summer back as soon as possible. Apart from anything else, there’s no observing to be had but even before the weather completely broke up we’d been stuck in a cycle of clear afternoons and cloudy nights for a couple of weeks.

I might have to rethink getting a big scope. I have not yet been able to find a permanent full-time job and the agency work has completely dried up, although I have some part-time seasonal work delivering tourist guides. I have an interview in two weeks’ time for a part-time data-entry job which offers just over £6000 ($9000) and if I get that, which won’t be enough on its own, I could at least combine it with the seasonal work. Unfortunately this seasonal job only lasts for the duration of the holiday season before dropping back to a few hours a week.
A 16″ Meade Lightbridge, at +/- £1800 is not beyond my financial reach on part-time/low wages but a custom-built scope at just over £3100 is, as things stand. Maybe I should just get a LB and then go for a custom-built David Lukehurst Dob when/if my work and financial situation improves? LB’s aren’t bad scopes with a bit of tweaking, although their mirror boxes are incredibly heavy for the size of the scope. Hopefully, though, by the time I have managed to put away £1.8K things might have improved.

From the notebooks – Australia 1997

I was going through old observing note books to scan in my sketches for my new website and I came across some from my observing trip to Australia in 1997. Those brought back some exciting and magical memories! I have decided to share some of the best ones here, as well as in their categories on my web site.
Click each image for a larger view.

NGC 5139, the great Omega Centauri. This ‘King of the Globular Clusters’ can be seen from southern Europe and the southern United States but has to be seen from the Southern Hemisphere in order to appreciate it in its full glory.
I looked at this wherever I went during both trips Downunder, from South America and also each time I have gone far enough south in the Northern Hemisphere to see it.
It’s huge, slightly elliptical and has a curious footprint-shaped area of less star density or obscuring dust, just off-centre. Spectacular.

8″ Cassegrain at 72x, Manly, Brisbane, Qld, Australia
August 11th, 1997

NGC 4755, the Jewel Box cluster in Crux.
This is my favourite star cluster, shaped like a capital ‘A’ and made up of blue and white stars of varying brightnesses but with a conspicuous red giant at the centre.

8″ Celestron SCT, Alice Springs, NT, Australia
July 21st, 1997

NGC 6822, galaxy in Sagittarius. This is Barnard’s Galaxy, a faint dwarf galaxy. The galaxy was a faint elliptical glow, quite faint against the background sky. Elongated 2:1 north-south with no central brightening.

20″ Dobsonian at 60x. Lions Camp Duckadang, Linville, Qld, Australia
August 26th 1997

NGC 55, galaxy in Sculptor.
At -39 S, this is too low to be seen from England, even from the IW (our theoretical cut off is -40 but with atmospheric extinction, not a chance). Huge elongated galaxy with a very bright, mottled core. Only just fits into field of view at 120x.

12.5″ Dall-Kirkham Cassegrain
Ellesmere, Qld, Australia
August 3rd 1997

NGC 7293, the Helix Nebula in Aquarius
I made two separate observations of this. One was from a rural site, the other from an urban one. Needless to say, I saw the nebula without an OIII filter more easily from the countryside than I did with a filter from the suburbs of Brisbane, where it was invisible. It was also 1st quarter Moon when I saw it in the suburbs.
Very large, oval ring with a low surface brightness and diffuse outer edges. No central star seen. Drawing made at the suburban site.
8″ Cassegrain at 72x, Manly, Brisbane, Qld, Australia
August 11th, 1997

Some sketches from TSP

I have finally got round to scanning in various sketches, as I was doing a rebuild of my website and needed to scan pictures for it. Among these are some of the pics from this year’s Texas Star Party. Click on each sketch for a larger image.

NGC 3245A, Leo Minor
Observed with Dennis Beckley’s 18″ Obsession at 258x.
Very thin and very faint. Pops into view with averted vision. Evenly bright throughout.
Prude Ranch, Ft. Davis, TX, USA

NGC 3279, Leo
18″ Obsession, 258x
Bright, very thin, elongated.
Prude Ranch, Ft. Davis, TX, USA

NGC 3432,Leo Minor
18″ Obsession, 258x
Very thin, irregular. Mottled, elongated centre.
Prude Ranch, Ft. Davis, TX, USA

NGC 5394 and 5395 (Arp 84), Canes Venatici.
48″ Dobsonian
Very large and bright through the 48″. Full of detail. 5395 is the larger of the two galaxies and is interacting with neighbour 5394. There is a bridge connecting the two galaxies. There is distortion in the spiral arms of 5395.
The Lowrey Observatory, Ft. Davis, TX, USA


NGC 3242, Hydra.
48″ Dobsonian, 814x.
This is, like all eye candies, pretty nice in more modest apertures but is absolutely sensational in the eyepiece of ‘Barbarella’. There are two green rings, the inner ring is more oval than the outer one and is thickened at each end while the outer one has a furry appearance. The central star is bright. Between the rings is ‘gauzy’ looking nebulosity which has a tinge of pink to it and the whole p.n. looks three-dimensional. I try not to write ‘wow’ in observing descriptions but…like, um…wow. As they say. Fabulous!
The Lowrey Observatory, Ft. Davis, TX, USA

NGC 4038 and 4039, Corvus
36″ f/5 Obsession Dobsonian, 352x.
Very large and bright at 352x in the 36″.
NGC 4038 is the thinner (uppermost in sketch) of the two galaxies. It is elongated and distorted with a brighter, mottled centre. NGC 4039 is fatter and not so elongated. It has bright HII regions and is very mottled. I can see 4039’s tidal tail easily but 4038’s is fainter and does not show up in the scan, although it is in the original sketch.
Prude Ranch, Ft. Davis, TX, USA

By the way, my website has been added to, with Messier galaxies the first observations up. Click here to visit the site.
I am getting itchy feet and am longing to visit Australia, or somewhere else south of the Equator, to see southern goodies again. Last year’s visit Downunder wasn’t the best for astronomy, although I wasn’t actually on an astronomy trip, with the single opportunity I got for some serious observing washed out by storms and torrential rain during Australia’s wettest and windiest winter for 25 years! However, any potential trips will have to wait until at least the end of 2011 as I want to get that 18″ scope first!

Fourth of July

Firstly, I would like to wish my American friends a very happy Fourth of July! I hope you all have a great day. 🙂

It was clear last night but, as it’s only the beginning of July, it still isn’t 100% dark, so I didn’t take the 12 inch outside (although once the shed’s up and the scope installed, that will change as I won’t have the effort of lugging it in and out of my room) but I did do a quick binocular session.
My first interesting object – two objects in fact – wasn’t a natural celestial body but the International Space Station, at 2300 BST (2200 UT). The ISS flight path takes it over here and you see it about every 90 minutes on a clear night, not much of a big deal these days as it’s familiar enough. However, in front of the ISS was a smaller, fainter, satellite on the same course and moving at the same speed. I knew it wasn’t the Shuttle, as none are in space at the moment (and soon, sadly, none will be ever again 🙁 ) so I did wonder what it was, until I remembered an item I’d seen on the BBC News website earlier in the day about the Russian Progress cargo ship which was supposed to dock with the ISS but which had malfunctioned. Progress had overtaken the ISS while the mission controllers were working out how to fix the problem. I asked about it on Facebook and, apparently, it was Progress I saw.

I went back outside later, at midnight, with my 8×42 binoculars and just scanned around once I’d got dark adapted. I just looked for Messier objects and I saw M81, M82, M4, M22, M16, M17, M20, M8, M103, M11, M39, M10, M12 and M24. Ok, I know it’s not exactly hard core deep sky observing, but it’ll do me for now until observing can properly begin again later in the month.

In Astronomy Now last month it was stated that M7 is not visible from the United Kingdom. That may be true further north but not true on the Isle of Wight. I can’t see it from the back garden here because of a low hill with trees on the top of it about quarter of a mile away (last night, I stood on a garden chair to see if I could spot M7 in between the trees on the hill but without success) but, at -34 declination it is certainly visible, if a little murky from being so low down, from the island. I have seen it from the Vectis AS observatory site just down the road and I have seen it from the Military Road. So, yes, it is visible from the UK.

The new ‘observatory’ is finally under way. At left is the miniscule progress so far. With help – I have a dodgy back and worse knees and my aunt has arthritis! – this should be done this week and the shed assembled.

Observing – in June!

I did some observing last night! Yes, observing in June! It can be done, provided you don’t have to get up for work the following day because of the late hour, as you can’t really begin before 0030 BST (2330 GMT/UT) due to the length of twilight at this time of year. The sky wasn’t as dark as it normally is at other times of the year, with the Sun no more than 16 degrees below the horizon at 1am, and the Milky Way not as prominent as it is later in the summer and early autumn, but you can do something. I went out just before 1am BST with the 8×42 binoculars (I figured it wasn’t worth taking out the 12 inch, just for a mere two or three hours), aiming to finish the AL Deep Sky Binocular Program; I had just four objects, all open clusters, left to find and these were in Cepheus and Lacerta with two in each constellation. These were NGC 7160 (Cep), NGC 7235 (Cep), NGC 7209 (Lac) and NGC 7243 (Lac).

Conditions: It was mostly clear, with some drifting cloud, although not enough to interfere with observing. It was also cold, the thermometer showing a dismal 7 degrees Celsius and the humidity was 72%.
Seeing: Very good, about II.
Transparency: Not so good, a little drifting cloud and hazy, around III
NELM: Didn’t check, although I’d guess it was no more than 5.8 at best.
Instrument: 8×42 binoculars.

NGC 7160, open cluster in Cepheus – Faint, round misty patch, no individual stars seen. 8×42 binoculars. 0055 BST

NGC 7235, open cluster in Cepheus – Easy to find small, misty patch. No stars resolved and averted vision does not improve the view. 8×42 binoculars. 0102 BST

NGC 7243, open cluster in Lacerta – Large, irregularly-shaped oc. Rich-looking. Granular when looked at directly, but with averted vision 10-15 individual stars appear. Hard to count them with handheld binocs. 8×42 binoculars. 0108 BST

NGC 7209, open cluster in Lacerta – Large and round. Rich. Granular with averted vision but with a few superimposed (foreground?) stars. Just a round misty patch when you look at it directly. 8×42 binoculars. 0115 BST.

That’s the end of the AL Deep Sky Binocular Program for me. It’s taken me, I think, a couple of years – looking at the notebook I have scribbled all this down in, I began doing this on 24th October 2008 so it’s just a few days short of 20 months. Now I have to find another binocular program to do! There’s the AL’s Southern Sky Binocular Club but there’s one major flaw with that one – I live at 50 degrees North so nearly all the stuff on there is immediately ruled out as inaccessible.
Using binoculars to do astronomy with is great, as binocular observing in its own right is fun and rewarding. It is also ideal for those occasions when conditions aren’t quite good enough to justify setting up a telescope, for when you want to do some observing but can’t be bothered to set up the telescope, for those occasional times when your scope has broken, or if you don’t have a scope – these things happen to everyone at some time or another and binoculars (a.k.a. bins, nockies, binos or binocs) are ideal.

Tomorrow morning, at 1129 UTC (1229 BST), is the Summer Solstice (Northern Hemisphere), so after tomorrow the Sun will start to move back south from the Tropic of Cancer and the nights will gradually begin to draw in again, although we won’t notice too much of a difference until mid-July. Sunrise will start to get later after 22nd June (the earliest sunrise is at 0442), but sunset (the latest time of which is 2122 local time) won’t get any earlier until after the 28th.
Far be it from me to wish the time away but I can’t wait to see the back of June as observing’s difficult. I am looking forward to later on next month and into August when the summer’s well underway, the summer goodies are still accessible and it starts to get dark enough to enjoy them properly. Let’s hope the weather co-operates!

TSP – The Objects: Part 5

This is the final instalment of the objects I saw at this year’s Texas Star Party – and you might be pleased to know it’s a very short one as the weather did not co-operate! I’d got invited back to the 48″ by Jimi and Alvin for some more huge scope observing.

Friday 14th May.
Conditions: Started out clear and dry but the humidity rose sharply after dark to a very high 78%
Seeing: II
Transparency: II
NELM: 6.5-6.7
Instrument: 48″ f4 Dob

IC 1182, galaxy in Serpens – Faint, oval, with optical jet (MAC 1605+1747B).
Possible new gravitational lens in Lynx?? – At first, this looks similar to the Double QSO in UMa, with two fat ‘stars’ on show, but at high magnification each component looks elongated while at very high magnification (1200x) there is a tiny companion located at “5o’clock'” from the larger object.
We also looked at some eye candy before shutting down.

By 0100 it was obvious that this was not going to be an all-night session, we could see fog over the Prude Ranch four miles away and the humidity, which had been rising all evening, was now 78%. The transparency had dropped right off and clouds were rolling in, so we packed up and headed back down to the house for chat and a beer.
And that was it for the observing at the 2010 Texas Star Party, as the following night, Saturday, was a complete write-off due to clouds. It had been a good star party, observing-wise and we all had enough observing to make us all happy.