And last night I did part two of the holiday observations. Nice clear weather. Bit chilly due to the open sky and somewhat strong wind. Nice though: no mosquitoes and no dew formation. My instrument was again the Grand Old Lady 4 inch
f/9 ED Vixen on the venerable GPDX mount.
A slightly different selection than the previous session. A little less touristic, but at least as much fun. Of course, I did repeat some of the highlights from last time. For example, there was some doubt about M109. However, that one remained no problem.
Below again some highlights in random order. Some sketches are a bit older, but they are all impressions observed through the telescope and exept "Tinkerbell" sketched by hand.
The first is in Lacerta and is called the Lizzard Starcluster. Magnitude 7.7 I prefer to call it Cluster within the ring, because of its shape. While sketching this cluster, I lost my way and orientation a bit due to the multitude of stars. As a result, I ran out of some space inside the cluster and filled it up at random. More a rough impression than a sketch. Cluster sketchers know this problem. It is the only sketch from yesterday.
In Delphinus there is a sweet little globular cluster,
NGC 6934. Magnitude 8.9. It is at the end of a row of stars, so the whole thing looks a bit like Tinkerbell's magic wand. I therefore call her Tinkerbell. The resemblance is striking.
- NGC 6934.png (5.18 KiB) Viewed 664 times
The Hole in a Cluster in Cygnus is not unknown. Actually, there are two holes. The neighboring and coarser star cluster is called the SAO 48608 group. Magnitude 6.8
The next one in Cygnus is called the Fetus Nebula here. With a 4 inch telescope, I make no more than a "quenching torch" of this. The nebula is quite faint,the starlet quite bright. Magnitude 11.0
Last but not least is
NGC 6888, the Crescent Nebula. Again in Cygnus, magnitude 7.4. On a previous vacation, the edge of this nebula could be seen with a 140mm OMC Maksutov and a UHC filter. This was the case again now, although it took a little more effort. However, it was clear that at the low magnification of 30X and thus the larger exit pupil with the refractor, the Crescent was suggested as a small faint droplet, not just the edge. This, of course, could be deception. At slightly higher magnification, that impression disappeared like snow in the sun. In my mind logical behavior. The sketch is from the days of the OMC.
Globular Clusters:
NGC 6934 "Tinkerbell",
NGC 7006 in Delphinus magn. 10.6.
Open Clusters:
NGC 6811 Hole in a Cluster,
NGC 7023 Iris Nebula in Cepheus, very soft glow magn. 7.2
NGC 6819 Foxhead in Cygnus, a ball of stars next to a triangle, very nice , magn 7.3
NGC 7209 Starcluster in Lizzard, Cluster in a Ring, magn. 7.7
NGC 6791 in Lyra, magn. 9.5
NGC 6886 in Cygnus magn. 7.6
NGC 7031 in Cygnus magn. 9.1
Roslund 5 in Cygnus, image-filling over 2.5 degrees
Tweedledee and Tweedledum in Aquila
IC 4756 and
NGC 6633
Further NGCs in Cygnus:
7062, 7067, 7082, 6910, 6871, 6940 Mothra Cluster
Planetary nebulae:
NGC 6826 Blinking planetary in Cygnus magn. 8.9
NGC 6905 Blue Flash in Delphinus magn 10.9 So no "Flash" in a 4 inch.
NGC 6781 in Aquila, 11.6 Large, faint, circular.
NGC 7008 in Cygnus, magn 11.0, neighboring star is bright.
Misscelaneous:
The familiar Veil Nebulae in the Swan, Sh2-102. With 30X magnification, a UHC filter and a 80 degree eyepiece that is a party!
I hope you enjoyed it.