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All observing logs tagged with M1

2008-02-09


Location: Billingborough (South Lincolnshire, UK)
From: 2008-02-09 14:45 UT
To: 2008-02-09 14:50 UT
Equipment: Solarscope
Temperature: 11.1C ...
Dew Point: 6.4C ...
Humidity: 73% ...
Wind Speed: Calm ...
Pressure: 1026.8hPa ...
Notes:

Very clear day. I took the Solarscope out to do a quick sunspot count.

Sun

From: 2008-02-09 14:45 UT
To: 2008-02-09 14:50 UT

No spots or other marks visible on the Sun.

Location: Woodland Waters (South Lincolnshire, UK)
From: 2008-02-09 19:55 UT
To: 2008-02-09 23:55 UT
Equipment: Antares 905
Lomo Lubitel 166B
Meade 10x50 Binoculars
Naked Eye
Notes:

Joined John and Kevin at Woodland Waters for an observing session. Not the best of nights, some thin cloud and contrails sticking around, also quite damp and a little hazy at times.

I brought my Antares 905 and John brought his Evostar 150.

Checking for Comet Holmes

From: 2008-02-09 20:10 UT
To: 2008-02-09 20:20 UT

I started out the session by seeing if comet Holmes was still visible to the naked eye. Given that the last time I saw it it appeared to be about the same brightness as the Double Cluster, and given that I could see the Double Cluster, I guessed I stood a chance of it was still of similar brightness to the last time.

After looking carefully for a couple of minutes I decided that it must be even fainter than the last time. I then grabbed my 10x50 binoculars and had a look in the general area around Algol and I pretty much saw it right away. Very faint and very diffuse. Only just brighter than the background sky. If I wasn't looking for it I probably wouldn't even have noticed it.

Started a Star Trail

Time: 2008-02-09 20:33 UT

I set the Lomo Lubitel 166B up on a tripod and started a star trail.

The camera was loaded with Ilford FP5+ 400 (120 roll film), the aperture was set to f8. Like the last time I tried this this was an experiment. This time I was interested to see what results I'd get with a faster film.

The camera was roughly pointed in the general direction of the Pleiades (M45) and the Hyades in Taurus.

Saturn

From: 2008-02-09 20:35 UT
To: 2008-02-09 20:45 UT

Had a brief view of Saturn via John's 'scope. Much like my last observation the view was very "soft" with no real detail visible. No shadow of the rings on the planet could be seen although, once again, I did get the impression that the rings were two separate and detached objects either side of the planet.

Titan was nicely visible.

Mars

From: 2008-02-09 20:47 UT
To: 2008-02-09 21:00 UT

Had a look at Mars via the 905 with the 6mm eyepiece and the 2x barlow. Just like always, I couldn't get any detail out of the planet. One thing I did notice though was that there was a definite hint of a gibbous phase. The planet did seem to be "taller" than it was "wide".

Stopped the Star Trail

Time: 2008-02-09 21:01 UT

Stopped the star tail I'd started earlier.

Taurus Star Trail

M1

From: 2008-02-09 21:15 UT
To: 2008-02-09 21:40 UT

Decided to have a look at M1 given that I'd not taken a look in over a year. With the 905 and the 25mm eyepiece it was very easy to find and, unlike previous observations, seemed to stand out really well. Despite the conditions during the evening (which were less than ideal) I'm pretty sure it was a better view than the one I once had via the 130M. Although it was the usual indistinct light patch it appeared to contrast with the background sky better than I'm sure I've seen it before.

M65 and M66

From: 2008-02-09 21:55 UT
To: 2008-02-09 22:05 UT

Had a look at M65 and M66 via John's 'scope and his 42mm eyepiece. Just two very faint patches of light, mostly needing averted vision to see them. It was impossible to make out any distinct shame or to say what their relative orientations were.

A break and a chat

From: 2008-02-09 22:10 UT
To: 2008-02-09 22:45 UT

Had a coffee and food break and a chat. Given that it was getting very cold and damp this was needed.

M95 and M96

From: 2008-02-09 22:50 UT
To: 2008-02-09 23:00 UT

Had a look at M95 and M96 via John's 'scope and his 42mm eyepiece. Just as with the previous view of M65 and M66 they appeared as two very faint patches of light, mostly needing averted vision to see them.

905 totally fogged up

Time: 2008-02-09 23:09 UT

I went to use the 905 and noticed that it was dripping with dew and that the main lens was totally fogged up. Decided to call it a night as far as the 905 was concerned.

Trying for the Eskimo Nebula

From: 2008-02-09 23:15 UT
To: 2008-02-09 23:35 UT

We spent some time using John's 'scope to try and locate the Eskimo Nebula but never managed to locate it. I made a note to check in some of my books and see how easy it should be to locate.

M3

From: 2008-02-09 23:40 UT
To: 2008-02-09 23:52 UT

Given that Canes Venatici was quite high up now we decided to have a look at M3 with John's 'scope. I first found it with my monocular to be sure of the location and then we got it in John's 'scope. With his 42mm eyepiece it was obvious that it was a globular cluster although no detail could be seen. Switching to his 15mm eyepiece we could see a hint of mottling in it giving the impression of a collection of starts without resolving any actual stars.

End of session

Time: 2008-02-09 23:55 UT

By 23:55 UT everything was terribly damp so we decided that it was time to call an end to the session.


2006-12-16


Location: Billingborough (South Lincolnshire, UK)
From: 2006-12-16 12:20 UT
To: 2006-12-16 12:25 UT
Equipment: Solarscope
Naked Eye
Temperature: 6.9C ...
Dew Point: 3.7C ...
Humidity: 80% ...
Wind Speed: 0.8mph ...
Wind Dir: West ...
Pressure: 1017.9hPa ...
Notes:

Very clear day. Took the Solarscope out to do a quick sunspot count.

Sun

From: 2006-12-16 12:20 UT
To: 2006-12-16 12:25 UT

Active area 930 was still visible although somewhat foreshortened due to getting closer to the limb of the Sun. Today I could only make out a single large spot. The penumbra around it was just about visible.

This was the first observation of 930 where I was unable to see it with the naked eye (via eclipse shades).

Location: Woodland Waters (South Lincolnshire, UK)
From: 2006-12-16 19:00 UT
To: 2006-12-16 23:50 UT
Equipment: Antares 905
Naked Eye
Notes:

Very clear and cold night. Arranged to meet up with John Turner at Woodland Waters to try it out as an observing location. I took along my Antares 905 and John brought his Sky-Watcher Explorer 130M mounted on an EQ5 mount.

A Leisurely View of Various Objects

From: 2006-12-16 19:00 UT
To: 2006-12-16 23:50 UT

We got to the observing location at around 19:00 UT to find reasonable clear skies with no sign of any cloud anywhere. Some time was spent finding a location and setting up and then the rest of the evening was spent chatting and having a leisurely view of random sights in the sky.

I started with a quick view of M42. Orion was still quite low at the time and the view wasn't very impressive. With the 32mm eyepiece and the 905 I could only just make out the glow of the nebula with averted vision. I decided to come back to it when Orion was higher.

Next I had a quick look at M45. I noticed that the seeing seemed very steady.

I then went on to have a look at M1. This was the first time I'd had a look at it in over a year and it was also the first time I'd observed it with the 905. The view was more or less the same as I remember from the last time — an indistinct patch of glowing sky that was best noticed with averted vision.

At 20:30 UT I saw a very bright and fast meteor travel north to south just below Taurus.

I then had a quick look at M36, M37 and M38 via the 905. All looked very clear and very steady with many individual stars visible. It was quite a different view from that that I've previously had in a binocular. With a binocular I'd previously noted that the clusters had the appearance of globular clusters but via the 905 it was very obvious that I was looking at open clusters.

At around 21:15 UT I returned to M42. By now Orion was higher and the view was much better. With the 905 and the 32mm eyepiece the nebula easily withstood direct vision. Quite a bit of detail was visible, it had quite a mottled appearance. I then dropped the 6mm eyepiece in the 905 and could easily pick out the trapezium.

During the next hour I kept going back to M42 and noted that the view kept improving as it got higher in the sky. Had it not been for the dampness (quite a bit of dew was forming) I'd probably have had a go at producing a sketch.

At around 22:23 UT Saturn was starting to rise above some trees near us. I had a quick look with the 905 and the 6mm eyepiece. The view wasn't that good due to it still being quite low, being viewed amongst the top branches of the trees and also due to some thin cloud started to get in the way. I could, however, easily make out the rings and a hint of the shadow of the rings. There was no sign of the Cassini Division. Titan was easily visible too.

Around 23:19 UT John suggested that I try and locate M81 and M82 in the 905. Using the 32mm eyepiece I pointed the 'scope at about the right location (working off 24 Ursae Majoris) and found them right away. The sight was far more impressive than I thought it would be. M81 had an elliptical appearance, as if I was seeing a galaxy partially tilted towards me, whereas M82 looked more like it was edge on and appeared to have a kink in it. The following evening I did some checking in a couple of books and the impression I had of them appears to perfectly fit the images.

At around 23:50 UT we started to pack up the equipment. All in all I'd say it was one of the best sessions I've had yet. While I didn't have any kind of observing plan, and while my notes weren't as detailed as they normally are when I observe alone, it was nice to share views and impressions with another observer. It was also nice to observe a largely unobstructed sky.


2005-10-09


Location: Billingborough (South Lincolnshire, UK)
From: 2005-10-09 20:26 UT
To: 2005-10-09 22:40 UT
Equipment: Sky-Watcher Explorer 130M
Temperature: 8.8C
Humidity: 78%
Notes:

Reasonably clear night with some mist hanging around — mostly noticeable as I looked towards the horizon. The sky wasn't as dark as it can be but I could still clearly see the Milky Way.

The main aim for this session was to have a look at Mars. At the start of the session it had already cleared the roofs to the East of me and it was almost clear of the worst of the murk and mist.

I set the telescope up and opened it for cooling at the very start of the session and then spent some time preparing and letting my eyes dark adapt a little.

Mars

From: 2005-10-09 20:46 UT
To: 2005-10-09 22:05 UT

First located Mars with the 25mm eyepiece. Even with such a low power (x36 on the 130M) I could easily tell that I was looking at a disk that seemed to be displaying a bit of a phase. The image was bright and displayed spikes corresponding to the arms of the spider that hold the secondary mirror in the 'scope. The image seemed very steady.

Switched to the 6mm eyepiece. The image looked huge and rather unsteady. Quite a bit of false colour was visible around the edge of the planet. The image didn't look very crisp and was rather unsteady. Without any sort of filter in place the surface still seemed very bright and rather washed out. However, there did seem to be an obvious variation in the colour of the disk hinting at some sort of surface feature.

At first glance the feature had the appearance of a short, thick line across the face of the planet.

Added the #21 Orange filter to the 6mm eyepiece. The image now seemed a lot sharper and the false colour was gone. However, there did appear to be an occasional fringe to the edge of the planet. The "line" that I mention above now seemed a bit more obvious and, with the Orange filter, seemed to take on a more "arrowhead" appearance.

The sight of the marking seemed to come and go and was rather fleeting. One moment it seemed very obvious to the eye and then the next it was rather indistinct. While the shape didn't appear to change as the view came and went I noted that it would have been very difficult to sketch.

Next, I combined the #21 Orange filter with the #15 Yellow/Orange filter but I was unable to detect any difference in the image.

After that I tried the #56 Green filter with the 6mm eyepiece. No real detail of any sort was obvious with this combination. I'd have said that the image seemed about the same as with the unfiltered 6mm eyepiece — only greener.

Around this time (21:25 UT) the house below where Mars was positioned lit a fire and there was a fair bit of smoke coming from the chimney. None of the smoke appeared to be getting in the way of my view of the planet but I imagine that the warm air that was rising from the fire interfered with subsequent views.

Now switched to the 6mm with just the ND13 filter to see what effect it would have. The view didn't seem any different from the view without a filter expect that it was dimmer (which was pretty much what I expected to see).

Despite not being able to tease any extra obvious detail out of the image the thing that was most impressing me by this time was the difference in the size of the image of Mars when compared to the first time I looked at it in the 130M. Even though I knew this was going to happen (that the apparent diameter would increase over time) the difference was still quite striking.

Next I tried with the 6mm and the #11 Yellow/Green filter. For a few brief moments, when the image seemed very steady, I was sure I could see slightly more detail than I had earlier. This was, however, a very brief view. I wasn't sure if this was down to the choice of filter, a lucky moment of very steady seeing or simply that Mars was now higher in the sky than when I'd started the observation session. Could simply have been a combination of all of the above.

Finally I decided to try with the 10mm eyepiece and the 2x barlow plus the #21 Orange filter. This seemed to be a good combination. Now I could see what appeared to be two darker areas on the surface. One seemed to be a vaguely rounded but linear feature (sort of an elongated oval) and the other appeared circular and smaller. The contrast wasn't great and, as with other filter and eyepiece combinations, the view seemed to come and go but there was no doubt that I was seeing slightly more than I was before.

What was most surprising about this combination was that, in the past, I've had focus trouble with the barlow and had more or less given up on using it. However, this time, the image seemed to come to a pretty crisp focus.

Double Cluster

From: 2005-10-09 22:11 UT
To: 2005-10-09 22:20 UT

Given that it was now very well positioned for me to view with the 'scope I pointed the 130M at the Double Cluster (AKA Caldwell 14 or NGC 869 and NGC 884) in Perseus. At first glance it looked like a rather sparse grouping of stars with two obvious areas of concentration. However, as my eyes adjusted both areas of concentration seemed to become richer and richer. I noted that both of the main concentrations fitted in the field of view of the 25mm eyepiece.

M1

From: 2005-10-09 22:26 UT
To: 2005-10-09 22:40 UT
Temperature: 7.9C
Humidity: 79%

Although it was still very low, just above the houses to the East of me and still in the thin mist, I couldn't resist trying to have a look for M1 (AKA The Crab Nebula or NGC 1952) in Taurus.

Using the 25mm eyepiece on the 130M I found it with little trouble. It was rather hard to make out (most probably due to the conditions under which I was trying to observe it). It had no real obvious shape to it, all I could see was an indistinct but visible "ghostly presence". Given that it was (just) visible in such bad conditions I image that it will make for a good target when it is higher in the sky.

By 22:40 UT I was starting to feel the cold and was also starting to feel tired so decided to call an end to the session.


Page last modified: 2013-04-09 09:19:19 UT
Dave Pearson <davep@davep.org>
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