At the end of March 2017, I conducted simple "late winter/early spring" deep sky observations, which might be of interest to other beginners and are therefore described here.
List of observed deep sky objects (the links lead to pages describing the DSOs):
I mostly selected my observation objects using the Sky Safari 5 Pro app.
See also the deep sky observations that were closely ahead in time Deep Sky Winter Observations February/March 2017 and the observations that followed in time Deep Sky Spring/Early Summer Observations May 2017.
I first restricted myself to the sky region around the constellations Canis Major (Small Dog), Monoceros (Unicorrn), Gemini (Twins), Cancer (Crab) to the left, and Auriga (Charioteer) to the right. This sky region is therefore similar to that of my February 2017 observations. On my "observation list" there were initially: M 41, M 93, M 46, M 47, NGC 2362, M42/43, and M 78 (n.f.). These objects were followed by M 48, M 50, M 1 (n.f.), NGC 2392 (Eskimo Nebula), NGC 2264 (Christmas Tree Cluster), and NGC 2237-9/46/NGC 2244 (Rosette Nebula). Later, M 35, M 36, M 37, and M 38, as well as M 44 (Praesepe/Crib in Cancer/Crab) were added to my list.
The following map shows approximately the sky area that I primarily browsed during my observations. The major part of the observed deep sky objects is located in the mily way, a few of then to the east of the milky way:
Click the map for a larger version - it opens in a new window. The deep sky objects that I tried to observe are indicated by red dots.
It was sufficiently dark for deep sky objects only after 8 p.m.
Most of the observations were conducted in Mühlhausen/Kraichgau (Germany):
At the beginning, I observed one day in Erkerode (near Braunschweig, Germany).
The observations started two to four days after full moon, and because the observations took place between 6 and 8-9 p.m. the moon still did not have any significant influence on the observation conditions. At the end of February, we were already passing the new moon (February 26), and the moon did not play a role in the observations. From the beginning of March (March 2) on, the moon returned to the sky and made observations progressively harder. In mid-March, the moon waned again and appeared later during the night so that it did not disturb my observations any more.
The moon did not disturb my observations. In general, the sky above Mühlhausen/Kraichgau is "light-polluted" and does not invite you to search for Deep Sky objects. In Erkerode, Northern Germany, the sky was a little bit darker.
|Observations||Details, Remarks||Further Observations and Remarks||Devices Used||Eyepieces Used|
|Mar 27||GE: M 42/43 (Orion Nebula)
OC: M 41, M 44 (Praesepe), M 46, M 47, M 93
|Erkerode||M 78 not found||Heritage 100P||32 mm Plössl, 16 mm, 7mm, and 4 mm UWA|
|Mar 28||The same deep sky objects as a confirmation||Mühlhausen||Also observed with bigger telescopes for confirmation of the findings.||Heritage 100P, Heritage P130 on GoTo mount, GSD 680||32 mm Plössl, 16 mm, 7mm, and 4 mm UWA|
|Mar 29||The same and a few more deep sky objects:
GE: NGC 2239/2244
PN: NGC 2392
OC: M 48, M 50, NGC 2264
I forgot to observe a few objects from
the initial list...
|Heritage P130 on GoTo mount||32 mm Plössl, 16 mm, 7mm, and 4 mm UWA|
|Mar 30|| Everything repeated and a few more deep sky objects:
OC: M 35, M 36, M 37, M 38
|Mühlhausen||Everything repeated...||Heritage P130 on GoTo mount||32 mm Plössl, 16 mm, 7mm, and 4 mm UWA|
Bold: First observation during this observation period; PN = planetary
nebula, GE = galactic emission nebula, GR = galactic reflection nebula, OC
= open star cluster
Searched for, and not found or results forgotten: M 1, M 78, M 67, NGC 2360. I list these objects here because they are also possible observation objects.
Details can be found by clicking the links to the respective deep sky objects.
|M 1||Crab Nebula||Taurus||GE||not found or forgot results|
|M 42/43||Orion Nebula||Orion||GE||yes||yes||yes||very nice|
|M 78||Orion||GR||not found|
|M 44||Praesepe||Cancer||OC||yes||yes||very nice|
|M 67||Cancer||OC||not found or forgot results|
|M 46/NGC 2438||Puppis||OC||yes||yes||star cluster M 46 weak but nice, looked like a nebula at low magnification; nebula NGC 2438 not found|
|M 47||Puppis||OC||yes||yes||brighter than M 46|
|M 93||Puppis||OC||yes||yes||nice at higher magnifications, only glow otherwise|
|NGC 2237-9/46/NGC 2244||Open star cluster in Rosette Nebula||Monoceros||OC||yes||saw star cluster NGC 2244 only, did not find the Rosette Nebula|
|NGC 2264||Christmas Tree cluster||Monoceros||OC||yes||saw the "christmas tree", but not the nebula within the cluster|
|M 50||Monoceros||OC||yes||yes||nicer than M 48, filled the view|
|M 41||Canis Major||OC||yes||yes||yes||nice, particularly at higher magnifications|
|NGC 2362||Canis Major cluster||Canis Major||OC||yes||yes||yes||I saw primarily an "L" shape...|
|NGC 2360||Canis Major||OC||not found or forgot results|
|NGC 2392||Eskimo Nebula||Gemini||PN||yes||there seemed to be a small little dot...|
|M 35||Gemini||OC||yes||yes||nice, many stars|
|M 36||Auriga||OC||yes||the brightest cluster from M 36, M 37, and M 38|
|M 37||Auriga||OC||yes||located outside of the "Auriga body!|
|M 38||Auriga||OC||yes||the most difficult to see from M 36, M 37, and M 38|
|M 48||Hydra||OC||yes||nice, not bright|
PN = planetary nebula, GE = galactic emission nebula, GR = galactic reflection nebula, OC = open star cluster, GC = globular star cluster
See the remarks on page Deep Sky Winter Observations February/March 2017.
When looking for deep sky objects, a good preparation is mandatory - you can read this, and I can confirm it. "Good preparation" basically means that you compile a list of the objects that you would like to observe, and to find out where and how the objects can be found. If you, as I did this time, observe the same objects three days in a row, this introduces a certain routine, and searching for the objects is faster and safer. At some point in time, boredom may set in, but this is much more the case if you are not prepared and only observe your "prime objects"...
If you point your telescope with the help of the red dot finder approximately to the desired sky object, look into the eyepiece and see nothing or only "nebulous clouds," but not something that resembles the object in question, the question arises: Is the sky too light-polluted that I can recognize the object or does the telescope point in the wrong direction? Admittedly, I was - even after repeated attempts - not able to clarify this question for some of the objects that I tried to observe on the first day.
That is why I repeated the observations of the first day on the following days in two different ways: On the one hand, with my 8 "-Dobsonian telescope (GSO GSD 680) and, on the other hand, with my Sky-Watcher Synscan AZ GoTo mount and the Sky-Watcher Heritage 100P telescope. In the first case, one or the other object that was not visible with the 100P should become visible because of the higher light gathering power of the 8 "telescope provided that the object was correctly accessed. In the second case, the sky objects ought to be accessed correctly thanks to the GoTo control (this does not always work, however...). If I should nevertheless recognize nothing at all in the eyepiece, this telescope is, under the given conditions, not able to show the object.
The results above show that especially in the case of M 35, M 36, M 37, and M 38 some clarity could be brought into these questions. Similarly, M 78 and M 1 remained unobservable in all cases (as I thought...), suggesting that the light conditions were not good enough for these objects. However, on the last day, I was able to spot M 1 with my largest telescope.
All the star maps were created with SkySafari Plus/Pro for Apple Macintosh.