Southern Sentinel Observing Report
Monday 10th March 2008
|Date:||10th November 2007 (Local)|
|Time:||21:00 - 22:15 NZDT (UT +13)|
|30 Minutes from Home|
Mild with No Wind. Early Cloudy then Clear.
Limiting Magnitude 5.0, transparency 3/5, seeing 4/5,
13.1 Inch Dobsonian, TeleVue Paracorr & Eyepieces & Lumicon Filters
Second Night in 3 days.
As the Cloud Sensor said it was clear, I decided to go up to Kumeu. When I arrived the cloud was dark and ominous, but I stuck around and it did clear. No one else arrived, as the Annual Astronomical Society Burbidge Dinner was being held.
Another good night was expected. An observing list compiled on Astroplanner was uploaded to the Argo Navis. This observing session was going to be short, as I needed to br home by 11PM.
Observations as follows;
|NGC 2217||Galaxy||88x||Large, round and easy galaxy, with and even brightness. Halo extends to twice the size with adveted vision. Near two 11th Mag stars.|
|NGC 2170||Bright Nebula||88x||Small patch of bright nebulousity around a 11th Mag Star.|
|M 78||Bright Nebula||88x||Bright patch of nebulosity. Easy, has two 11th Mag stars involved.|
|NGC 3242||Planetary Nebula||88x||Strong green colour showing through on the Ghost of Jupiter, even at the lower power.|
|NGC 3115||Galaxy||88x||Spindle Galaxy. Bright lenticular shaped galaxy. Contrast average, in the top of the Auckland light dome.|
|M 67||Open Cluster||88x||Large Messier Open Cluster. Fairly even in distribution, with 200 members. 50 odd stars are brighter than 11th Mag.|
|Fleming 1||Planetary Nebula||88x||Fleming 1. Small, compact and a hint of irregularity. Not difficult to spot.|
|8P Tuttle||Comet||88x||Large round comet with a very even brightness, possibly about 20 arc minutes in diameter. No tail.|
|NGC 3960||Open Cluster||88x||Fairly faint sparse open cluster. Has about 50 members and only stands out due to the field being not very rich.|
|NGC 3783||Galaxy||88x||Small compact galaxy, with a stellar core. Has a 10 mag star right next to it. Fairly easy to spot.|
|NGC 3749||Galaxy||88x||A galactic pair with NGC3742. Similar in brightness, but NGC3749 is maginally more faint.|
|NGC 3742||Galaxy||88x||A galactic pair with NGC3749. Similar in brightness, but NGC3749 is maginally more faint.|
|NGC 3706||Galaxy||88x||Compact galaxy with an even brightness, perhaps a brightening of the core. Probably elliptical.|
|NGC 3918||Planetary Nebula||88x||Nice colourful view of the Blue Planetary. Nice low power view frames the PN well.|
|NGC 3699||Planetary Nebula||88x||Irregular PN which is moderately bright. Warrents a higher power. In a starry field.|
|IC 2391||Open Cluster||88x||Too big for the even the 22mm Nagler, field is covered with 8th Mag stars. Clearly naked eye.|
|Tr 10||Open Cluster||88x||A gathering of about 50 stars brighter than 10th Mag. Scattered across the FOV.|
|NGC 2660||Open Cluster||88x||Rich open cluster. Compact and well resolved. Inside a triangle of 9th 10th and 11th Mag stars.|
|NGC 2626||Bright Nebula||88x||A bright nebulous patch, similar in size to M78, observed earlier, but fainter. Has 4 stars involved within its boundry.|
|NGC 2547||Open Cluster||88x||Rich open cluster. Has 50 brighter members 9th/10th stars and about 25 fainter stars. Fills the FOV.|
|NGC 2546||Open Cluster||88x||Large open cluster that more the fill the FOV. 50 bright members, with a compact grouping in the N that works its way across the FOV to some brighter 9th Mag loosely associated stars.|
|IC 2395||Open Cluster||88x||Bright Jewel like Open cluster. Has 20 members brighter than 10th Mag. Visible naked eye. Not far from the Omnicon Velorum Cluster.|
|IC 2220||Bright Nebula||88x||Star with nebulosity, the object is a good candidate for the narrowband filters. Quite compact, but there is more to see here. Must return for closer inspection.|
|NGC 1851||Globular Cluster||88x||A bright, well resolved, globular cluster. Very condensed (Type 2) globular. 10 arcminutes in diameter.|
|M 79||Globular Cluster||88x||Bright Messier globular, in a sparse field. Not as rich or as nice as NGC1851 that I have just observed. Compact and with a strong condensation in the core.|
|NGC 2206||Galaxy||88x||Small compact galaxy, moderately faint with no real detail.|
|NGC 1979||Galaxy||88x||Small, round galaxy but not difficult. No real detail on note.|
|NGC 1964||Galaxy||88x||Small galaxy that shows not much different from a star. Very compact but bright. Overrated.|
Argo performed very well. I did a 27 Star TPAS run, before it got dark.RMS fitted 5.3' raw 8.3, PSD 5.7, IE -5.5 +/- 1.1. Excellent pointing all around the compass and the uploaded catalog was nice to work through. Very easy.
There was a little bit of cloud around early, but this shuffled off and I had pretty much and un-interrupted. Nice views of some Open Clusters and it was good to catch up with some Southern Planetaries again. IC2220 was interesting and needs further observing.
Home at 11:00 PM.
|13.1" f5 Reflector with Argo Navis|
|Auckland, New Zealand|
|36° 55' 09 " South, 174° 43' 30" East|
|-- The Southern Sentinel --|