Category Archives: Equipment

Small scope session, 24th July 2011

The dark nights are back, if only for a couple of hours each night, and the nights are drawing in at last. Last night, 24th July, was clear although not perfect so I took my small scopes out instead of getting the 12″ out. Another reason for this was that I wanted to see what the little ones could do on the globular clusters of Ophiuchus.

Date: 24th July 2011
Conditions: Clear, 87% humidity (very dewy), 12° C
NELM: 6.0 decreasing to 5.8 later on.
Transparency: III. Clear, some haze visible. Milky Way still visible but not detailed
Seeing: II
Equipment: 2.75″ (70mm) f/6 Vixen refractor; 4″ (102mm) Meade SCT, 8×42 binoculars; 40mm Televue Plossl, 25mm Televue Plossl, 15mm Televue Plossl.

NGC 6218 (= M12), globular cluster in Ophiuchus -Large and bright. Not resolved in little scope but granular with averted vision. The g.c. has a brighter centre and an irregular shape. 2.75″ refractor with 15mm Plossl (28x).

 

 

 

 

 

 

 

 

 

 

 

NGC 6254 (=M10), globular cluster in Ophiuchus – Smaller and slightly brighter than M12. Denser than M12 with a brighter denser core. Round. Unresolved. 2.75″ refractor with 15mm Plossl (28x).

 

 

 

 

 

 

 

 

 

 

NGC 6426, globular cluster in Ophiuchus – Not seen.

NGC 6366, globular cluster in Ophiuchus – Not seen.

NGC 6705 (=M11), open cluster in Scutum – Visible to the unaided eye and as a bright detached nebulous patch in the Scutum Star Cloud through the 8×42 binoculars. In the 4″ SCT it is a bright, rich, fan shaped cluster. With direct vision it just looks nebulous but with averted vision there are many stars, although there is still a nebulous background. There is a bright star on the eastern point of the ‘fan’. 4″ SCT, 25mm TV Plossl (40x).

 

 

 

 

 

 

 

 

 

 

NGC 6402 (=M14), globular cluster in Ophiuchus – Round, not resolved. Slightly brighter towards the centre. 8×42 bin.

The scopes were dewing up badly as neither have dew caps so, as it was 1am, I packed up. While I’d rather be doing some more ‘serious’ observing (for want of a better expression), just going outside and using tiny scopes and binoculars to see what can be picked up is fun and can be suprisingly productive.

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The little Vixen 2.75″ is a nice little rich field scope and it’s easy to find things with. It’s also easy to use on my photo tripods. However, I feel it’s a little *too* small, but it’s fun to poke round the sky with and see what I can pick up.
The 4″ SCT is much heavier, it’s physically a lot larger and is more of a nuisance on the tripods. It’s not really designed for use on a photo tripod, but I have never had a mount for it, as I bought it second-hand a few years ago. It has to be used with a red-dot finder as the field of view is too narrow to use without one, as it’s an f/10 (1000mm focal length). I am not a fan of red-dot finders but it’s better than nothing.
I am going to want a travel scope (as I am planning a trip to the Southern Hemisphere – probably Australia again – in 2013), which necessarily needs to be small because of airline baggage restrictions but I am not yet sure that either of these will fit the bill. Maybe a good compromise will be a rich-field short-tube refractor of around 3.5 inches, such as those made by Skywatcher or Orion.

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All being well, my 18″ should be ready any day now, barring any issues with the mirrors. I haven’t heard that there are any problems, so fingers crossed, it will be done soon.

 

Summer observing

As those of us stuck at high latitudes know (I’m at 50° North), the long twilights of summer aren’t that conducive to deep sky observing. When it does get ‘dark’ it’s only astronomical twilight as the sun is less than 18° below the horizon. But while it may not be good for the really faint fuzzies (and here, I admit that webcam users and imagers have an advantage over us eyeball-only types) it’s still dark enough for the bright DSOs. Even Messiers you’ve seen countless times before are worth repeated looks and, as it is really the only observing you can get during summer at these latitudes, it’s better than nothing.
The good news is that sunsets started to get earlier from July 1st and from the 16th true darkness returns, only for 36 minutes on the first night but the hours of darkness soon get longer. With a reasonable 30-day forecast (‘reasonable’ meaning average for this time of year – warm sunshine, some showers, average/slightly above average temperatures), I should hopefully get in more observing later this month, good news as I am hoping the new 18″ will be finished in around 3-4 weeks’ time.
I did a little observing last night, going after the supernova in M51, which is still on show, and a little open cluster-hunting in northern Cygnus. There are several on the Herschel II list and real little gits they are too. NGC 7031, NGC 7067 and NGC 7082 were on my list as well as the bright nebula NGC 6857. I also took a look at M57, the Ring Nebula in Lyra.

My notes are as sparse as the clusters themselves were!

Date: 2nd July 2011
Conditions: Cloudless, cool (12° C/53.6° F), some dew
Seeing I-II (later)
Transparency: II
NELM: Around 5.5-5.8 due to the astronomical twilight. Definitely less than 6.0. Milky Way visible all the way to Sagittarius but lacking contrast
Equipment: 12″ f/5 Dobsonian; Televue Panoptic 22mm (69x), Televue Radian 8mm (190), Televue Radian 5mm (304x)

SN2011dh in M51 has got a little brighter recently. It was definitely easier to see than last time but that’s probably as much to do with no Moon in the sky as it is to do with the brightness of the supernova – M51’s spiral arms were certainly easier to see this time out. I didn’t make a sketch this time.

NGC 7031, open cluster in Cygnus – Small and quite poor. Compressed. 69x, 190x
NGC 7067, open cluster in Cygnus – Faint, adj to 9th mag star. In rich surroundings. 69x
NGC 7082, open cluster in Cygnus – Scattered, large, cluster. In rich area. Not that great and looks more like a richer portion of Milky Way. 69x

I’ll come back to these on a darker night, and the same goes for NGC 6857 which I looked for, a little over-optimistically, but didn’t see. It was at this point, around midnight, that the observing was interrupted by the kids in a house the other side of the footpath putting an insecurity light on, which encroaches on our garden – although it’s worse in winter because of the lack of leaves on the hedge and trees. They’d gone out into the garden do do some camping (I assume they were camping as I heard what sounded like a tent being put up and a tent zipper being opened and closed) and obviously wanted to see what they were doing. I wish they’d used torches though. I decided to pack up, an hour earlier than I’d intended, as the light was a nuisance – and I didn’t want to disturb them with ‘funny noises’ from across the way (it’s strange how loud switching eyepieces and moving around can be in the dark) and, more importantly, I didn’t want them disturbing me!
At least, when I get the new scope, it will be easier to move to another location in the garden, as it will break down and have wheelbarrow handles on it. I’m intending to move my observing spot further down the garden, although the ‘observashed’ will remain where it is, although I can move around depending on where I am looking at the time.
I shoved the 12″ back into the shed and closed the doors on it. This morning, when I went up there to put it away properly, I found I’d left the Telrad switched on. Fortunately, a Telrad reticle uses up hardly any power so the batteries were far from flat. It’s not the first time I’ve left a Telrad on and I guess it won’t be the last!

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Collimation’s one of those weird things that has a reputation for being awkward, annoying and downright difficult and it’s viewed almost as being akin to witchcraft, with ‘The Knowledge’ being available to only a select few individuals. However, observers need to know how to collimate their scopes properly in order to get a decent image in the eyepiece and to achieve focus at high magnifications. There’s no real risk of buggering it up as the mirrors, even if they end up miles out of alignment, can easily be put right again. My current scope, a 12″, is a real git when it comes to going out of collimation and I have to fix it before each and every session. I am hoping my new 18″ won’t be as temperamental.
For me, cleaning the mirrors holds far more trepidation than merely aligning the things. That’s where things can really go wrong…I’ve managed to scratch a mirror attempting to clean it in the past.

For those who can’t quite ‘get’ collimation – and in the past I have been among those people – check out the brilliant video tutorial on the website Andy’s Shot Glass, which explains visual and laser collimation, simply and perfectly. Click here to see it. I have no association with Andy or his website but it’s the best and most simple explanation of the process I have ever seen. Just reading about the process doesn’t make it immediately clear and it may take several re-reads in order to make sense of it; seeing it, though, makes it much clearer. There are loads of websites which offer help with collimation, and there are threads about it on Cloudy Nights, but nothing is as helpful as actually seeing something demonstrated such as in the video.
The way to do it (and the best way for a lone observer such as myself) is to use the sighting tube to centre and tilt the secondary mirror, then use a laser collimator to get the beam right into the centre of the primary. Then you go to the back of the scope and adjust the primary mirror itself, getting the beam in the centre of the laser’s display window, meaning everything is centered nicely when you look in the sighting tube again and your collimation is spot on. It’s not hard and takes a couple of minutes. Pure visual collimation without a laser is more awkward, as that requires two of you to perform the procedure, unless you have arms like Mr Tickle, which most people including me, don’t!

Mini observing session, 27th May 2011

After a stormy and unpromising day, Friday night cleared nicely. I was out all evening, not getting home until past 11pm although, given the light nights at this time of year, that’s not really a problem. However, I didn’t feel like getting the 12″ out – and the weather forecast indicated that clouds were soon going to roll in, continuing May’s unsettled note (May’s weather quite often is rubbish but I hope this isn’t the start of yet another lousy summer) so instead I brought out the little 70mm refractor, recently released from its dark prison in the depths of a cupboard. It’s imprisonment wasn’t intentional, it’s just that I don’t have a lot of use for such a small scope. Or I didn’t think I had, until I decided I want a travel scope just in case I am able to go anywhere next year. Unfortunately air travel restrictions don’t allow you to take anything much larger than a small refractor or Mak-Cass overseas. People better at woodwork and metalwork than I am have made collapsible 8″ or larger dobs for airline travel, but that’s beyond my limited practical capabilities.
Anyway, with the lack of anything else to write about on here, here’s a short account (I won’t say ‘report’ like a lot of people do on astronomy forums; I don’t like the term when used for descriptions of observing sessions as I think it’s too formal, making it sound compulsory and too much like work) of the Friday night mini-session with the Vixen.

Date: 27th May 2011
Conditions: Cloudless, no dew, chilly, breezy.
Seeing: II
Transparency: II
Equipment: 70mm (2.8″) f/6 Vixen refractor with Televue 25mm (16.8x) and 11mm (38x) Plossl eyepieces. Lumicon 2″ UHC filter.

The summer Milky Way was rising, and Cygnus was beginning to clear the nearby trees, so I aimed the little scope at the various star fields. The beauty of a small rich-field scope is that you don’t need a finder to aim it. Because of the wide field views, it’s easy to find what you’re looking for just by sighting along the tube, something which is all but impossible with a larger, longer focal length instrument.
As well as looking round the rich Milky Way of Cygnus, I looked for individual objects, bright Messiers generally. M29, a coarse and poor open cluster in Cygnus, was easily seen at 16.8x. Despite its sparseness it was an attractive sight at 38x, standing out nicely from the Milky Way. It’s seven brightest stars were all easily seen in the tiny scope.
In Lyra, M57 was easily seen at 16.8x as a non-stellar object in a rich area. Putting up the magnification to 38x showed an oval with a darker middle.
Turning to Hercules, M13 was easily seen in the scope, and was resolved, despite being at a neck-twisting angle. No surprise there, as it’s a naked eye object on a good night. It wasn’t quite naked eye the other night, though, as the sky wasn’t quite dark enough for that. I didn’t bother with M92, because of the awkwardness of the eyepiece angle – one of the areas where a reflector beats a refractor hands down.
M81 and M82 in Ursa Major provided a lovely view at 38x. M81 was oval, with a slight hint of spiral arms while M82 was a bit brighter and showed mottling.
Scorpius was rising so I decided to see what M4 looked like with the 70mm. Despite its low altitude, the view was surprisingly good and the cluster began to resolve at 38x. If it was higher, it wouldn’t be bad at all with the tiny scope.
Meanwhile, Vulpecula had cleared the trees, so I looked for and easily found M27, the Dumbell Nebula, at 16.8x, as a round patch in a rich area. I was expecting to just see M27’s ‘apple core’ shape but, somewhat surprisingly, at 38x, the fainter lobes showed up well.

Back to Cygnus and NGC 7000 and IC 5070/5067, the North America and Pelican Nebulae. NGC 7000 is a pretty easy naked eye object as a shining patch adjacent to Deneb, as by now, it was 0040 and dark enough to see fainter objects. The shape was easy to make out with the help of my Lumicon 2″ UHC filter held to my eye, with the dark ‘Gulf of Mexico’ prominent. IC 5070/5067 was fainter and needed averted vision to see properly. It’s a nice sight through my 8×42 binoculars though.

It was getting cold and it was nearly 1am, so I packed up – which was the work of less than a few seconds, another plus factor of a small scope. Unfortunately small scopes don’t cut it when you want to view faint deep sky objects and, with a rich field scope such as the 70mm, you can’t get enough magnification for detailed views of DSOs or the planets. However, for a ‘grab and go’ scope and a travel scope, it’s ideal. One scope can’t do it all; my 12″ is way too large and cumbersome to be much use as a ‘grab and go scope’ (being a one-piece tube it barely fits in my car) and doesn’t give wide field views. As noted Arizona observer Steve Coe once said, ‘There’s no such thing as an all-purpose telescope’.

The Texas Star Party begins today. Hopefully they’ll have good clear skies. I wish I was there.

Deja vu

Volcanic ash. Again. At least, this year, I don’t have any travel plans to be potentially disrupted but if I was going to TSP, I think I’d be a bit worried, as it starts on Sunday. I was lucky last year, I dodged the ash as the winds changed direction the day before my flight left and the worst thing that happened then was that we got rerouted north of the Arctic Circle, which turned an 8 hour flight into a 12 hour flight. Who’d have bet on lightning – or, rather, ash – striking twice in the space of 13 months when there’s been hitherto years of no disruption despite plenty of Icelandic volcanic activity?

On a lighter note, I am hoping to do some travelling next year, whether the TSP or something else. I am thinking of doing something different and going on an astronomy trip to Arizona. Arizona has a fabulous climate for observers, being dry and transparent with over 300 clear nights a year (which is a lot better than us!), there are observatories you can visit – Lowell certainly has a public visitor centre – and there are, as you’d imagine, lots of amateur astronomers and astronomy clubs there. Also, while I have been to the States three times, all of these visits have been to Texas and I’d like to see a bit more of the place. It’s a big country and there is plenty to see. Should I make it out to Arizona, I am hoping I can meet with other observers and clubs. Funds permitting, I would also be hoping to make a side-trip to California.
I’d like to take a little travel scope with me as my 8×42 binoculars don’t quite cut it, although they are great for widefield views and I have seen most of the Messiers and quite a few brighter non-Messier DSOs with them. I have a Vixen 70mm guidescope that came in a box of bits given to me a few years ago and that should fit the bill quite nicely. I have found a suitable 1.25 inch diagonal and my Televue 25mm, 15mm and 11mm Plossls plus the 8mm Radian (which give magnifications of 16.8x, 28x, 38x and 52.5x respectively) and it gives nice views of bright deep sky objects and the Milky Way. I am not sure I’d take all four eyepieces with me but it’s nice to have a variety.

I tried it out last night, on M4, M57, M81, M82 and the globulars in Ophiuchus and it worked very well indeed.

I also had a fairly unsuccessful session with the 12″. Unsuccessful? Simply because the sky was a bit too light (it was 2330 local time) to find much, there was a fair bit of drifting cloud around and there was a stiff breeze (it has been pretty stormy just recently). I was after galaxies in Hercules, knowing full well it wouldn’t be that successful. Hercules is best placed for viewing in June but that’s precisely the wrong time of year to see it properly from these latitudes, thanks to light nights.
I did, however, find NGC 5970, a galaxy in Serpens (Caput) – it was reasonably bright and stood out well against the background sky. There wasn’t much brightening towards the core, it was very slight. Core non-stellar and the edges of the galaxy were diffuse, not sharp. Elongated 2:1 NW-SE. 69x, 190x
I then had a look round some of the brighter Messier globulars in Ophiuchus before putting the 12″ away and getting out the little 70mm Vixen.

A ‘sound approach’?

Just recently, because I have several projects on the go at once – the Herschel 2500 among them, plus as much of the NGC as I can possibly do from 50 North as well as some smaller ones – I am just taking notes and not doing any sketching. This is because sketching slows me down far too much. While I am not in a tearing hurry I do want to get through the projects in a decent time frame, so I am just sticking to writing notes down in a lined note book.
However, there are problems with this in that I need to use a light in order to see what I am writing. Even a dim red light affects my night vision and I have found that faint galaxies and nebulae disappear for a good few seconds while my eyes readjust. Not only that, the way things are set up it means that I have to physically move away from the eyepiece to the table where my notebook is in order to write things down. This also slows me down although nowhere near as much as sketching does.Then you have the sheer awkwardness of writing with gloves or frozen fingers during the winter. Finally, my writing is dreadful at the best of times and in the dead of night by red light it goes from merely ‘dreadful’ to ‘barely legible’!
Recently, I read about other observers using digital voice recorders (dictaphones) to dictate notes at the eyepiece, ready to be transcribed into a notebook or onto a computer later. Now, as I detest the sound of my own voice and I don’t want our two sets of neighbours, whose gardens are just the other side of a footpath from ours, to think that I am a nutcase chatting away to myself outside in the middle of the night, I discounted ever getting a dictaphone. However, the more I think about it, the more sense the idea makes. Using a dictaphone means I don’t have to move away from the scope, apart from when I need to look up my next object on the charts, or even look away from the eyepiece. And I don’t have to talk loudly into it, a whisper should suffice which would get around the twin problems of the loathing of my own voice and the neighbours thinking I am a lunatic – I hope! I am hoping this will mean I get more objects observed in a session.
So I’ve decided to give it a go and went into town this morning to look for a suitable machine. I was surprised at the prices, starting at £39.99 and going up from there as I thought one of these things would be around £20 max. I shopped around and, as I don’t want to save my recordings for future posterity, because I’ll be transcribing them, I decided against getting one that plugs into a computer on grounds of cost and bought the cheapest I could find.
Instead of saving my inane chatter onto disk, I’ll be transcribing my spoken notes into Word, then printing them off, the same as I do now only without trying to decipher my bad writing.
Anyway, here’s the 40 quid piece of plastic, made by Olympus, which was somewhat over-priced for what it is. Now I need to read the book and work out how to operate the thing!

By the way, I *will* be going back to sketching, probably during the summer when the skies are not quite dark enough to go after the more elusive NGCs and ICs. I plan to carrying on a globular cluster observing project I began a couple of years back (globulars lend themselves well to light summer nights) and I’d like to sketch most, if not all, of them.

There are a couple of interesting threads on Cloudy Nights about note taking, including the use of digital voice recorders, here and here.

Thursday evening at the local astro society

The weather recently has been clear, but murky, and last night was no exception. I went to our local society’s observatory last night (every Thursday is the open evening and we usually get a mix of members and sometimes interested members of the public) and we took out some scopes, including a 10″ Orion Intelliscope.
Unfortunately the mist and murk were worse than the previous night and we only were able to look at the brightest Messiers. Galaxies, as expected, were worst hit and even normally good Messier galaxies were almost obliterated. We did look at M105, NGC 3384, M65 and M66 (NGC 3628, one of the Leo Triplet with M65 and 66, was utterly wiped out by the murk), M81, M82, open clusters M93 and M46 (not a bad view despite their low altitude in Puppis and the misty conditions), perennial faves M42 and M43, plus the attractive blue and yellow double star Iota Cancri and, later when it rose, Saturn, whose rings have opened up since I last saw it.

I have never used an Intelliscope before. The concept is similar to the Argo Navis system, a digital setting circle. You enter your wanted Messier or NGC number, the display shows some numbers, which are how far you need to push the scope in altitude and azimuth to get to where you are going, along with arrows showing which direction you need to push the scope. The numbers get lower the nearer you are and when you arrive at the location the display will read 0<>0 0<>0. The society’s Intelliscope was a little off, with the objects being just out of the field of view, but not by much. It’s a neat system and I’d like a similar thing for my scope, maybe an Argo Navis, one day.

Despite the crap conditions it was a nice evening and we also spent the time putting the world to rights as well as observing. It was disappointing though, that only a handful of us were outside, with most people choosing to sit inside the building and chat. It’s an astronomy society, so it would be nice if everyone was outside but that seems to be the difference betwen UK and US amateurs. Over there, it seems to be a more vibrant and active scene.

Clocks go forward on Sunday morning. Yuck.

Parapher…parerfern…observing stuff

While I like to keep observing simple, none of that fiddly imaging stuff for me(!), I do still end up taking quite a bit of observing paraphernalia with me every observing session. I keep my eyepieces in the house, as well as my notebooks, etc, for security and also so they don’t get damp. My Star Atlas 2000.0 stays in a box in the shed, it’s already got damp on numerous occasions, is a bit mouldy in places and is eminently un-nickable.

Here are the items – apart from my scope – that I use each time I go observing:

A bag to put everything (excluding eyepieces) in:

A ring-binder for my observing lists and printed MegaStar charts:

Sketchbook:

Notebook (for those times where I don’t do sketches although it comes every session as it’s also a logbook for each session):

Sketching/writing stuff. Pens, pencils – mechanical pencils and graphite sticks – chamois for smudging nebulae, etc), tortillon, clip-on red torch, round template for sketches (plastic lid off coffee cup), putty eraser and eraser shield, all stored in a handy artist’s case which I got from a local art shop:

The Night Sky Observers Guide; if I do take them out I usually only take one out at a time and I use them for checking observations afterwards, although normally I wait until I get back indoors. Before I had the shed, I would never take them outside, too expensive to ruin!

The all-important dim red torch. This one has adjustable LEDs.

And my case of eyepieces and other scope bits and pieces:

The bits and pieces, except the Night Sky Observer’s Guides which stay on my bookshelf, are kept in the bag and it, the case and a flask of tea or coffee, get carried up the garden in one go; I can carry all that lot at once, because the bag has a shoulder strap, so unless I’ve forgotten something, I don’t need to return to the house.

The weather is currently atrocious and I’ve not been observing for a while. I did get out last week, around full Moon when it was (typically!) clear and looked at Jupiter and Uranus with my 3.5″ refractor; with enough magnification I managed to see Uranus as a disk, which was good. That was an interesting diversion but I’ve done no deep sky since the early morning of September 17th.

This was the dismal view from the kitchen window this afternoon, and there’s at least another week of this crap to come, due to deep lows in the Atlantic (sometimes I find myself wishing the damn thing would dry up!). Fortunately my observing shed, in the far distance in the photo, appears to be holding up in the face of the gales and rain. Touch wood!

A blast from the past

After a break of some years, I have found myself back on the committee of our local astronomy society. We’re in the process of tidying up the observatory, a process which we began yesterday evening, and when I looked in the secure storage where the scopes are kept I found a familiar-looking 6″ dob. It has an orange tube made from a gas pipe and a plywood base, and it was wearing a very fetching floral-patterned shower cap which I removed for the photos. I am pretty sure it is not my old 6″, as I don’t remember mine having the aluminium ring around the top of the tube (or the floral-patterned cap!), but otherwise it is identical. Several of these were made and some are still kicking around somewhere, presumably including mine since I offloaded it.

It was nice to see the old thing, it brought back some nice memories of finding my first deep sky objects with my own, very first, astronomical telescope!
During the meeting it was mentioned that it was the society’s 35th anniversary coming up. It occurred to me that I have been a member for 18 years, I joined in summer 1992 – I was a ‘mere slip of a thing’ then, as a member, one of my oldest astronomy friends, jokingly said to me. Nowadays, while I am by no means fat, you can’t say that I am a ‘mere slip’, unfortunately!

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??!!

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.