Southern Sentinel Observing Report
Saturday 10th November 2007
|Date:||10th November 2007 (Local)|
|Time:||20:00 - 23:00 NZDT (UT +13)|
|30 Minutes from Home|
Mild with Wind. Clear
Limiting Magnitude 5.0, transparency 3/5, seeing 4.5/5, 5/5 Later
13.1 Inch Dobsonian, TeleVue Paracorr & Eyepieces & Lumicon Filters
Another night out at Kumeu.
Again good clear settled weather, I decied to have a quick look tonight and be home at 11:30PM. Don't want to push too much, 3 nights out in 3 Weeks is a pretty good effort. Being well orginised, it's taking less than 10 minutes to pack and leave.
Alan Kane was there again when I arrived, just before sunset. Arriving early makes setting up and getting ready easy and gives time for the scope to cool and time to put the feet up.
I have not planned anything in particular but I may revisit the LMC objects recently visited again.
Observations as follows;
|Uranus||Planet||276x||Looked at Uranus, disk very clear. No moons seen. Have no maps or charts with me to identify moons.|
|Neptune||Planet||276x||A quick look at Neptune. Icy blue disk visible at higher power. Triton not seen.|
|N 159||Bright Nebula||176x||LMC Observing. Heinze 159.
I have called this object by it's Heinze rather than it's NGC designation due to the fact the the Heinze designation encompasses the whole of the smaller brighter portions. I have however, logged the individual NGC portions of this nebula, however, these are only the brightest notches and there are many minor notches that I have not logged. The whole 6 arcminute sq area of this object has nebulosity and even filaments of nebulosity seem to spill out even further beyound the boundries.
|NGC 2084||Bright Nebula||176x||LMC Observing. Heinze 159 Nebula. NGC2084 is on the E edge of this Heinze 159 Nebula and appears to be the same size as the brighter NGC2079 patch but fainter.|
|NGC 2083||Bright Nebula||176x||LMC Observing. Heinze 159 Nebula. The largest patch of separate nebulosity within N159, and is about the same brightness as NGC2084. About 2 arc minutes across and takes up about 30 percent of the area nebula.|
|NGC 2079||Bright Nebula||176x||LMC Observing. Heinze 159 Nebula. The brightest notch of N159 is the SW section, and this has the individual NGC 2079 designation. It appears round and clearly separated from the other notches, however nebulosity is very apparent between all members of the Heinze 159 Nebula.|
|NGC 2078||Bright Nebula||176x||LMC Observing. Heinze 159 Nebula. The smallest portion of the N159 nebula is on the W egde, NGC2078, appearing distinct but looking like a galaxy with a stellar core. Just to the N of the bright NGC 2079 notch.|
|NGC 2074||Bright Nebula||176x||LMC Observing. The nebulosity involved with NGC2074 is 'Kidney Bean' shaped and the curve of the 'Bean' arcs towards the Tarantula. As this object is observed there is a tendancy to overlook the open cluster within the nebulosity. The 7 or so stars are about 12th Mag and one is 11th Mag.|
|NGC 2055||Open Cluster||176x||This small OC, I first mistook for a much larger object, as the LMC background stars are very prominent. The object is infact probably no more than a group of three stars (About 10th Mag). There is an undesignated patch of nebulosity just two arcminutes to the W. This nebulosity is only visible with the UHC however.|
|NGC 2081||Open Cluster||176x||LMC Observing. More follow-up work on the N158 region to the SW of the Tarantula. NGC2081 is a small compact starry knot embedded in the nebulosity that works it's way from NGC2074 just to the SW. Several stars are resolved, but many more are visible in this small area that are just background stars. I'm picking that there are 8 to 10 stars in the order of 12th Mag invloved in this cluster. The nebulosity forms two brighter patches immediately to the NE (N158) and to the SW (N158 main portion).|
|NGC 419||Open Cluster||276x||Fairly bright globular cluster with seems like some of the outer members are partially resolved. Moderate size and fairly easy.|
|NGC 416||Open Cluster||276x||Small unresolved globular, very similar to NGC121 in brightness and size. This globular cluster is part of the SMC.|
|NGC 362||Globular Cluster||276x||Nicely resolved globular and very well framed at this power. Steady seeing and sharp stars enhance a very nice view. Strong core suggest a Type 3 or 4 globular.|
|NGC 1466||Globular Cluster||276x||Small globular cluster in the deep south, small and fairly faint, unresolved. Has a bright 9th Mag and 11th Mag star close in.|
|NGC 121||Globular Cluster||276x||Very small compact and unresolved globular cluster just outside the FOV of 47 Tuc. Adveted vision increases the size, however there is no impovement of the resolution.|
|NGC 104||Globular Cluster||276x||I have logged 47 Tuc tonight beacuse, I am using the 7mm Nagler and it is just spectacular. The seeing is superb and 47 Tuc is nice and high in the S. Some of the resolution in the core, I have never seen before and is evident even with the lower magnifications.
The only improvement to this view tonight would be darker skies. Truely breathtaking.
|NGC 1808||Galaxy||114x||A nice bright oval (5:2) galaxy. Fairly large, with a strong core. Nice object. Contrast is poos so I will have to come back here once this galaxy culminates.|
|NGC 1756||Open Cluster||276x||Small unresolved LMC globular. Moderately bright and compact. Has some brighter friends nearby, especially the NGC1743 and NGC1737 nebulous patches.|
|N 83||Bright Nebula||276x||Heinze 83. I thought I would log the Heinze designation for the bright nebulous patches in the same FOV as the globular NGC1756. Very bright and has a variety of patches and notches. Well return here as I log the LMC more throughly.|
|Pal 12||Globular Cluster||114x||Small and extremely faint globular cluster which looks galactic in nature. Not much more than a faint round smudge. Clearly identified, next to a triangle of three stars of similar brightness, about 11th or 12th Mag.|
Nice alignment tonight, with pointing being very good. All good tonight and it's good when the gear works well.]
Seeing was superb, better than anything I have seen from Kumeu in all the times I have been there. The cloud has been over the Waitakares and Kumeu all day, and then clearing from abut 6:30PM for the whole night. This may be related to the good seeing as well.
Had a look at the light dome, from the lights of Auckland. It's up 35 degrees in the direction of SE, and about 35 degrees E and W od SE. W and NW is definately the darkest region of the sky form Kumeu.
Spent a bit of time looking at the Heinze 158 & 159 Nebula regions along with a few southern globular clusters with the 7mm Nagler.
Home at 11:30 PM.
|13.1" f5 Reflector with Argo Navis|
|Auckland, New Zealand|
|36° 55' 09 " South, 174° 43' 30" East|
|-- The Southern Sentinel --|