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All observing logs tagged with M57

2007-05-19


Location: Woodland Waters (South Lincolnshire, UK)
From: 2007-05-19 20:20 UT
To: 2007-05-19 23:41 UT
Equipment: Antares 905
Canon EOS 400D
Notes:

Joined John and Kevin at Woodland Waters for an observing session. The sky was still very light when we arrived, Venus and a crescent Moon hung over the western horizon. Some cloud scattered around but appearing to clear.

Giving Guests a Tour

From: 2007-05-19 20:40 UT
To: 2007-05-19 21:00 UT

A short while after we'd set the 'scopes up and left them to cool down we were joined by a young couple asking what we were looking at. We explained that we weren't looking at anything specific and asked them if they wanted to have a look through the 'scopes.

Over the next 20 minutes or so we gave them a tour of Venus, the Moon and Saturn. As usually happens Saturn seemed to go down a treat.

While showing them Saturn I noticed that the image wasn't too good this evening. It was possible to make out the planet's shadow on the rings but that was about all that could be seen. I couldn't make out the Cassini Division.

Venus was also a bit of a problem too. While it was possible to make out the phase (it was apparent that the phase was smaller than the last time I observed it) there was a lot of false colour (the contrast booster helped a little but not as much as it has in the past) and the image was very unsteady.

Another guest

From: 2007-05-19 21:01 UT
To: 2007-05-19 21:05 UT

Just after the first guests left we had another visit. This person didn't stay very long, just long enough to have a quick look at Saturn through Kevin's ETX125. That sight got a very obvious "wow!" (as it does with most people).

Photographing Venus and the Moon

From: 2007-05-19 21:10 UT
To: 2007-05-19 21:30 UT

I got the Canon EOS 400D out of the car, set it on the tripod, and took some wide angle views of Venus and the Moon together:

Venus and the Moon

Venus and the Moon

Venus, the Moon and Me

Stopping for Coffee

From: 2007-05-19 21:37 UT
To: 2007-05-19 21:47 UT

By 21:37 UT it was obvious that it was going to be a very damp observing session. I noticed that lots of dew was forming on everything. I covered up the log book and anything else that might suffer from getting wet and decided to stop for a short coffee break.

M51

From: 2007-05-19 21:47 UT
To: 2007-05-19 21:57 UT

John had got M51 in his 80mm 'scope and I had a look at it (I would have got it in the 905 too but it was in a position that I can't get that 'scope in to — it's not very good at pointing almost overhead). At first it was difficult to see but, slowly, a very faint ghostly patch came into view using averted vision. I was impressed that I could see anything given that the sky still wasn't anywhere near fully dark.

M57

From: 2007-05-19 22:00 UT
To: 2007-05-19 22:15 UT

Given that Lyra was at a reasonable hight I decided to see how M57 looked in the 905. I found it without too much trouble using the 25mm eyepiece (in that it simply looked like a slightly out-of-focus star) and I then switched to the 6mm eyepiece

With the 6mm it simply looked like a faint disc. There was no hint of the ring structure that I've seen before in the 130M.

Given that the sky still wasn't fully dark I decided to compare the view I had with the view using the Neodymium filter. It did appear to improve things slightly although I wouldn't have said that it brought out any more detail. While I wasn't really comparing like-for-like in terms of observing conditions I'm of the impression that this is an object better left to the 130M.

Antares 905 Fogging Up

Time: 2007-05-19 22:16 UT

By 22:16 UT I noticed that the 905 was starting to fog up. Because of this I decided to cover it up and see if it would clear.

M3

From: 2007-05-19 22:20 UT
To: 2007-05-19 22:30 UT

While the 905 was recovering I had a look at M3 thought Kevin's ETX125. For some reason I've never observed this cluster globular cluster before. I was surprised at how striking the view was.

Observing with a 15mm eyepiece, at first all I could see was a diffuse patch in the sky. As my eye adjusted, and especially when using averted vision, I started to see a mottled effect in the cluster and I soon had the first distinct impression that I was making out individual stars.

Jupiter via EXT125

From: 2007-05-19 23:10 UT
To: 2007-05-19 23:20 UT

After a short coffee break we noticed that Jupiter was visible between trees, low on the horizon. Kevin turned his ETX125 onto it and I spent a short while having a look. All four moons were visible, one to one side of the planet and three to the other side. The view, however, was terrible. It was impossible to make out any detail whatsoever on Jupiter. This wasn't really that surprising given that the planet was so low down and also given that we were observing it thought some thin (and apparently growing) cloud.

Jupiter via 905

From: 2007-05-19 23:23 UT
To: 2007-05-19 23:30 UT

I uncovered the 905 and turned that towards Jupiter. Using the 6mm eyepiece and the contrast booster the view was no better than it had been via the ETX125. I spent a short while just observing but the view never improved and I never saw any detail at all on the planet. At no point could I even make out the two main bands.

End of Session

Time: 2007-05-19 23:41 UT

Over the past hour or so more and more thin cloud had been forming over is and was starting to spread out more. By around 23:41 UT it was obvious that it wasn't going to get any better so we decided to call an end to the session.


2005-09-02


Location: Billingborough (South Lincolnshire, UK)
From: 2005-09-02 19:13 UT
To: 2005-09-02 23:25 UT
Equipment: Naked Eye
Meade 10x50 Binoculars
Sky-Watcher Explorer 130M
Notes:

Quite a long observing session — probably the longest I've done yet. The evening started with trying to track down Venus and Jupiter close to each other after sunset and then carried on with me getting the 130M out for a couple of hours.

Hunting for Venus and Jupiter

Time: 2005-09-02 19:13 UT

Venus and Jupiter were just past conjunction so I headed out to the West side of the village with a view to trying to catch them just before sunset. By the time I got set up the Sun had set and the Belt of Venus was visible. Hardly any cloud in the sky although a reasonable covering on the Western horizon.

Spent a short while scanning the horizon with the naked eye but couldn't see either of the planets.

More hunting for Venus and Jupiter

Time: 2005-09-02 19:23 UT

Spent a short while trying to find them with 10x50 binocular. Still couldn't see anything. With the binocular it was very obvious that there was quite a bit of cloud all along the part of the horizon I wanted to be watching.

Failed to find Venus and Jupiter

Time: 2005-09-02 19:50 UT

Having failed to see them (defeated by cloud on the horizon) I headed back to the house. I double checked everything with Starry Night to be sure that I'd been looking in the right place at the right time — I had. Venus would have set at around 19:37 UT so both planets would have been very close to the horizon while I was looking so they were obviously obscured by the cloud.

Out into the garden with 130M — M57

From: 2005-09-02 21:02 UT
To: 2005-09-02 21:23 UT

Now that darkness had really set in I set up the 130M in the garden and decided to check everything by having a quick look at M57.

Sky appeared slightly misty and dew was forming on everything very quickly. Quite a damp feel to the air.

Initially I found it very hard to find it. The problem seemed to be that the red-dot finder was way off and, even after taking some time to adjust it I was still having problems. It seems that, for some reason, the finder itself is now sat on the 'scope such that I don't have enough "slack" in the adjustment to get the 'scope and the dot lined up. I suspect I'm going to have to try and adjust how the finder sits on the 'scope so that the fine-tuning can be done with enough "slack" in the system.

Finally found M57 after a little effort and made a point of making a mental note of how far off the dot in the finder it was so finding other objects should be a little easier.

M56

From: 2005-09-02 21:29 UT
To: 2005-09-02 21:47 UT

Decided to hunt down M56 with the 130M. Started out with 25mm eyepiece. Found it with some trouble. It appeared to be a very small, faint, fuzzy patch. Switched to the 15mm eyepiece and it still appeared to be rather faint. Quite indistinct, no real hint of any actual shape to speak of. Couldn't resolve any stars at all.

Switched to 10mm eyepiece. Although appearing bigger it was still faint, fuzzy and indistinct. There was, however, a hint of a shape now. My best description would be that it seemed vaguely triangular.

With the 6mm eyepiece it was bigger still and the description of it with the 10mm seemed to hold true for the view with the 6mm. As globulars go M56 has to be the hardest target I've looked for yet. With some extra effort and generally with averted vision there did seem to be a slight grainy appearance to it giving a hint that I was looking at something that was composed of stars. That view came and went and was very fleeting.

Strange cloud moment

From: 2005-09-02 22:03 UT
To: 2005-09-02 22:07 UT

Decided to go for M27 next. Roughly lined up the 'scope on the right area and turned my back on the sky for a few moments to check a couple of charts. When I turned back the part of the sky I wanted to look at was now apparently obscured by a cloud. There was no warning of the cloud, I didn't see it coming in from any part of the sky, it just seemed to appear out of nowhere.

Then, almost as quickly as it had appeared, it disappeared. It wasn't that it moved away, it seemed to just disappear (again, while my back was turned). Also, at the same time, I noticed that the NW part of the sky had brightened compared to a little earlier (although, in this case, it didn't seem to be cloud as I could still see stars).

Most odd.

Meteor near Cygnus

Time: 2005-09-02 22:25 UT

While looking in that direction saw a rather bright meteor head roughly East to West just North of Cygnus.

M27

From: 2005-09-02 22:30 UT
To: 2005-09-02 22:50 UT

Back to hunting for M27. Took a little effort to locate — partly down to the issue with the finder and also partly down to the fact that I was looking for a small, faint fuzzy object so I was doing a very careful sweep of the general area. When it finally appeared in the field of view (initially using 25mm eyepiece) I was shocked and amazed at how large and bright it appeared!

The initial appearance was of a large, grey/blue misty patch with a very definite "dumbbell" appearance. Although the overall effect was that it was roughly circular I could see that two opposing sides of the nebula were much brighter and more obvious then the rest of the circumference.

A stunning sight!

Switched to the 15mm eyepiece. The view was even better. Slightly brighter and the "dumbbell" appearance was more pronounced. Made the following rough sketch:

Sketch of M27

Mars

From: 2005-09-02 22:58 UT
To: 2005-09-02 23:25 UT

Finally, a reasonable night out with the 'scope and Mars is getting into a position where I stand a chance of seeing it. That said, I was still observing with a sky that was getting more and more misty while looking in the general direction of a bright streetlight, through a fair bit of atmosphere and with eyepieces that were starting to fog up.

Started with the 25mm eyepiece. All I could see was a non-pin-point bright object that had a hint of orange colouring to it. Next switched to the 10mm eyepiece. Now it started to look like a planet. It had an obvious gibbous phase to it and in brief moments of steady seeing (the image was swimming around rather badly) I thought I could detect a variation in the shading of the surface.

Added a #21 Orange filter to the 10mm eyepiece. Was impressed with how well it seemed to clear up the image. With the filter, in the moments if steady seeing, the variation in the colour of the surface was much more pronounced.

Next used the 6mm eyepiece with the #21 Orange filter. The "swimming" of the image was now much more pronounced so it was harder to get a handle on the image. However, on the odd occasion when the image did settle down the dark patch was very visible. It looked the same as with the 10mm eyepiece only more obvious.

By 23:25 the dew problem was starting to get pretty bad and more and more mist was forming at low level. Decided to call an end to the session.


2005-07-16


Location: Billingborough (South Lincolnshire, UK)
From: 2005-07-16 21:27 UT
To: 2005-07-17 00:15 UT
Equipment: Naked Eye
Sky-Watcher Explorer 130M
Meade 10x50 Binoculars
Notes:

Another reasonable night's observing. Sky seemed quite clear, I think I'd have rated the transparancy as "pretty good" and seeing seemed "very good". The temperature was cool but pleasant. Waxing gibbous Moon.

Moon

From: 2005-07-16 21:27 UT
To: 2005-07-16 21:40 UT

With the naked eye I noticed that on the terminator of the Moon there was an obvious and significant feature jutting into the night-side. For some reason I don't think I've ever really noticed something as obvious as this before.

Using the 130M and a 25mm eyepiece I could see that it was part of Montes Jura, which partly surrounds Sinus Iridum.

I was contemplating trying to make a sketch of the scene when I started to lose the Moon behind a neighbour's house.

Albireo

From: 2005-07-16 22:00 UT
To: 2005-07-16 22:24 UT

Turned the 130M on AlbireoCygnus) and companion. Started with the 25mm eyepiece. Reasonably wide pair. Noticed that there seems to be a faint difference in colour but I couldn't quite tell for sure exactly what it was. One of the pair seemed to be slightly more blue in appearance (the fainter of the pair) whereas the other seemed much more white.

Switched to the 15mm eyepiece. Now the brighter of the pair appeared to have a faint orange tint to it. The fainter of the pair had a slight blue tint.

With the 10mm eyepiece the effect was the same as with the 15mm but the colours were more pronounced.

With the 6mm eyepiece the colours were even more pronounced. My impression was that the brighter of the pair has an orange/white appearance to it and the fainter of the pair has a blue/white appearance.

Attempt to find M29

From: 2005-07-16 22:31 UT
To: 2005-07-16 22:52 UT

Decided to have a go at finding M29 in Cygnus. Pointed the 'scope in the general location of the cluster. Using the 25mm eyepiece I thought I'd found it after discounting a couple of candidates. I found this very hard-going given that this is a very star-rich part of the sky due to it lying in the "thicker" part of the Milky Way.

Finding it hard to tell if I'd got the right object or not I grabbed my copy of Neil Bone's Deep Sky Observer's Guide to see if that could help me check if I'd got the right object. Sadly there was no illustration for this object but the text described it as a "south-pointing triangle". The collection of stars that I'd finally settled on seemed to fit the bill but I was still unsure that I'd really found M29.

Made a sketch of what I'd found so I could check later against any images I could find:

Sketch of object

Checking afterwards with Starry Sky I found that what I'd sketched wasn't M29. Annoyingly, I had actually seen M29 but had discounted it as what I saw didn't seem to match the description I'd read. What I had drawn (ignoring the brighter star that I'd marked) was, from what I can tell, the following stars: TYC3152-1679-1, TYC3151-955-1, TYC3151-757-1, TYC3151-1782-1, TYC3151-1591-1, TYC3151-478-1, TYC3151-1573-1, TYC3151-1237-1 and TYC3151-550-1. The bright star I marked was 34 Cygni. Seems I was about 1 off.

It strikes me that there are two useful lessons here: the first is that I should do a little more preparation before going hunting for an object such as this (one that could be easily confused in a star-rich area); the second lesson is that when you're unsure about something you think you've found doing a sketch for later comparison is a good thing.

M31

From: 2005-07-16 23:10 UT
To: 2005-07-16 23:20 UT

Noticed that M31 had risen enough to clear the murk of the eastern horizon (not to mention the roofs of the houses near me). Couldn't quite see it with the naked eye (then again there is a street light in that direction and it was still reasonably low down) but found it very easily with 10x50 binoculars. Could see the central bulge rather well with a faint hint of the rest of the galaxy.

I would have turned the 130M on it but, annoyingly, it was obscured by my Pear Tree from where I was set up and I didn't want to get into moving the 'scope and realigning it and everything at that point. I'll save M31 and the 130M for another night when it's higher in the sky.

M51

From: 2005-07-16 23:25 UT
To: 2005-07-16 23:50 UT

Decided to have a go at M51. It wasn't very favourably placed given that it was off in the Western part of the sky and given that that part of the sky wasn't anywhere near fully dark. Using the 25mm eyepiece, after a little bit of effort, I found it. Although all I could see was two faint fuzzy blobs it seemed pretty obvious that it was M51. There was no hint that I was actually looking at a spiral galaxy. With averted vision the blobs did seem a little more extended.

Dropped the 15mm eyepiece into the 'scope and had another look. The impression I got was that it looked a little brighter and, with averted vision, there was the vague impression that the "extensions" to the blobs mentioned above appeared to overlap.

The really enjoyable part about seeing M51 was the realisation that I was looking back in time somewhere in the region of 30 million years or more.

M57

From: 2005-07-16 23:55 UT
To: 2005-07-17 00:15 UT

Decided to have another look at at M57. Given that Lyra was better positioned than the last time I observed it I wanted to see what would be visible with the 6mm eyepiece (I'd tried using it during the last observing session but couldn't see much at all). Also, the sky seemed a lot darker and clearer that the last time (for example, I could now easily see the Milky Way with the naked eye, something I couldn't do the other night).

First located M57 with the 25mm eyepiece, centered it in the field of view and then immediately switched to the 6mm. Noticed right away that the "hole" was very visible, I could more or less detect it with direct vision. Also noticed something that I'd not noticed in the previous observing session: a faint star just to the side of the nebula. I also thought I could detect a faint variation in brightness in the ring but it was hard to pin down exactly where this was and what form it took (this was only really noticeable with averted vision).

Made a sketch:

Sketch of M57

As an experiment I've taken the above, converted it into a gray-scale image and then inverted the colours. This is the result:

Inverted sketch of M57

At 00:15 UT I finished the session.


2005-07-12


Location: Billingborough (South Lincolnshire, UK)
From: 2005-07-12 20:17 UT
To: 2005-07-12 23:23 UT
Equipment: Sky-Watcher Explorer 130M
Notes:

Reasonable evening's observing. Started out while the sky was still very light (not even sure that the Sun had set when I first set up) because I wanted to align and test the new Red-Dot Finder that I'd purchased from Scopes'n'skies.

Also wanted to try the chance to test out a set of Lunar Filters that I'd recently purchased.

Despite there being a fair bit of high-level "misty" cloud kicking about I stayed out for quite a while with a view to trying to see M57.

Align and test Red-Dot Finder

Time: 2005-07-12 20:17 UT

It took a while to get the finder properly aligned — I originally made the mistake of trying to use a reasonably distant object on the horizon but when I then tried to use the finder to line up on the Moon I just wasn't getting it. Finally gave up on that I used the Moon as the alignment target. That worked a treat.

After the alignment I slewed the 'scope away from the Moon and used the finder to get me back on it. The Moon was in the eyepiece (25mm) first time.

Very impressed with the finder, it's so much easier to use than the finder that came with the 130M.

The Moon and aborted filter test

From: 2005-07-12 20:27 UT
To: 2005-07-12 20:42 UT

Started to have a proper look at the Moon with the 25mm eyepiece. Noted that the image was quite unsteady even at this low magnification. This probably had as much to do with tube-currents as anything else given that the telescope was still very warm and I'd not been out that long.

Around 20:42 UT, just as I'd attached the ND25 filter to the 25mm eyepiece and reinserted the eyepiece into the telescope, I started to lose the Moon behind the house nextdoor so I had to give up on that test.

Jupiter, testing new finder and ND25 filter

From: 2005-07-12 20:50 UT
To: 2005-07-12 21:11 UT

Noticed that I could now see Jupiter with the naked eye so decided to use this as a second target for testing the new finder. Lined up with the finder and then looked through the 25mm eyepiece. Almost spot on first time! Took the opportunity to fine-tune the alignment against Jupiter.

Switched to the 6mm eyepiece but found it hard to get reasonable focus and the image was very unsteady (again, probably tube-currents combined with unsteady air in general and seeing not being terribly good).

Added the ND25 filter to the 6mm eyepiece and, surprisingly, found that it seemed easier to pick out a good point of focus.

At 21:11 UT Jupiter was obscured by a cloud.

Summer Triangle

Time: 2005-07-12 21:12 UT

Noticed that, while the sky was still quite light, and while there was some thin cloud above me, I could now clearly see the Summer Triangle.

Also noted that Arcturus was easily visible.

Jupiter

From: 2005-07-12 21:20 UT
To: 2005-07-12 21:22 UT

Jupiter became visible again. Went back to it with the 10mm and 2x barlow. This time the image was reasonable. The two main belts were obvious and I also noticed a moon very close to the planet.

At 21:22 UT I started to make a sketch of Jupiter and its moons but I lost it behind the house nextdoor so the sketch didn't get finished.

Testing effect of filters on a star

From: 2005-07-12 21:37 UT
To: 2005-07-12 21:50 UT (approximate)

Decided to test the effect of the ND25 and ND13 filters on a bright star. Selected Deneb as a suitable target.

Using the 10mm eyepiece on its own the star seems to be "too bright" to see well. There is an obvious four-pointed flare caused by the spider in the scope.

With the addition of the ND25 filter things get a lot better. While I can still see the flare caused by the spider it is nowhere near as obvious as it is without the filter.

With the ND13 there is no flare at all. It is, however, obvious that I'm not seeing a pin-point of light. I suspect that this comes down to a number of things: collimation (still need to get around to making a habit of doing this), possible lingering tube currents, a general unsteadiness of the atmosphere and the fact that there is still a hint of high-level haze around.

Based on that little test I get the impression that the ND25 and ND13 filters might come in handy when trying to split a reasonably close and reasonably bright binary.

Mizar in Ursa Major

From: 2005-07-12 22:00 UT
To: 2005-07-12 22:26 UT

Had another look at Mizar again. While doing so I noticed a 4th star very close that I'd not noticed last time. Checked with Starry Night it seems that it is TYC3850-257-1, a magnitude 7.56 star. I noted this down because it's interesting that I didn't seem to notice it last time

Did a rough sketch of what I saw:

Sketch of Mizar

Also note the faint star to the far right of the sketch. Not sure what that is; I need to check. It would estimate that it is somewhat fainter than TYC3850-257-1. Checking later with Starry Night it is TYC3853-654-1, a magnitude 9.56 star.

At 22:26 UT, just as I was finishing up the above and removing the 10mm eyepiece from the telescope, I managed to drop the eyepiece onto hard paving! Blast! As best as I could tell it didn't damage the eyepiece although it did leave a rather nasty looking scuff mark on the metal barrel.

Finding M57

From: 2005-07-12 22:31 UT
To: 2005-07-12 22:44 UT

Decided to go looking for M57 (the Ring Nebula) in Lyra. First lined up in the general area using the new Red-Dot finder then looked through the telescope itself with the 25mm eyepiece. Nothing immediately stood out. However, while initially looking, a satellite passed right through the field of view. I turned round to look with the naked eye but couldn't see it at all.

Back at the telescope, I moved the field of view around a little and almost immediately saw what I thought must be M57. My initial impression was that, in contrast to the stars in the field, there was a faint, ghostly gray "blob". Noted that I could only see it with averted vision. With the 25mm eyepiece there didn't appear to be any hint of it being an actual ring (this might not have been helped by the fact that the sky still wasn't fully dark and that there was still some high-level haze about).

Made a rough sketch of what I could see, marking some of the brighter stars I could see in the field. This was made a little difficult by the field being partially obscured from time to time by some of the cloud/mist:

Sketch of M57

M57 with 15mm eyepiece

From: 2005-07-12 22:52 UT
To: 2005-07-12 23:01 UT

Switched to the 15mm eyepiece. With averted vision a good hint of the ring structure could be seen. A couple of minutes into looking at it another satellite went through the field.

There's no obvious hint of any colour to the ring, although with the 15mm eyepiece (compared to the 25mm eyepiece) it did seem to be more of a faint "bluish gray" rather than just gray. Also noticed that the nebula seemed to be very elongated in one direction.

At around 23:01 UT I made the following sketch of what the nebula looked like with the 15mm eyepiece (note that, again, I simply marked some of the more obvious stars in the field for reference):

Sketch of M57

M57 with 10mm eyepiece

From: 2005-07-12 23:08 UT
To: 2005-07-12 23:23 UT

Switched to the 10mm eyepiece. The ring structure was now very obvious (again, with averted vision). It seemed much less "blueish". The center doesn't seem as dark as the background sky but it is obviously darker than the edge of the nebula.

Around 23:14 UT started the following rough sketch:

Sketch of M57

By 23:23 UT it was starting to get very misty so started to pack up for this session.


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Dave Pearson <davep@davep.org>
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