Southern Sentinel Observing Report
Wednesday 23rd August 2006
|Date:||23rd August 2006 (Local)|
|Time:||19:00 - 21:30 NZDT (UT +12)|
|30 Minutes from Home|
Cool, Light Occasional Breeze with Patchy Cloud
Limiting Magnitude 6.0, transparency 3/5, seeing 4/5
13.1 Inch Dobsonian, TeleVue Paracorr & Eyepieces & Lumicon Filters
|Dave Ek Box and Palm|
After a dodgy looking day I decided to head up to Kumeu. It was unlikely that I would be able to get out observing this weekend so I decided to chance it. Left home early to get up to Kumeu Observatory and set up in the twilight. A passing shower was going through as I arrived but it looked good for at least some observing tonight.
A little difficulty getting the mirror and the cradle to snap together tonight.
Dave Moorhouse and Alan Kane turned up about 7:30PM to join me.
|NGC 6572||Planetary Nebula||98x||Remakable PN, bright and green in colour. Makes a isocles triangle with two yellow stars to the east. Non stellar.|
|NGC 6426||Globular Cluster||98x||Very faint globular cluster, not resolved. Adverted vision makes the cluster easier to spot.|
|IC 4665||Open Cluster||98x||Large bright open cluster, too large for the FOV of this telescope. Ideal object for a RF telescope.|
|NGC 6631||Open Cluster||98x||Small open cluster, two levels of brightness. Has 10 members that brighter and then 30 to 40 stars in the background, almost part of the starry backgound field. There is a bright yellow (12th Mag) star on the NW edge. Cluster actually fits into a rombus shape of 12th Mag stars.|
|NGC 6568||Open Cluster||98x||Very large open cluster, nearly filling the FOV of the 17mm Nagler. Over 200 members, and has a bright star (6th Mag) on the eastern edge. Has a C shaped asterism embedded inside the cluster.|
|NGC 6644||Planetary Nebula||98x||Faint planetary which makes a triangle with two 8th mag stars. Small and comparably bright with a nearby 13th mag star. Brighter than the star with adverted vision and non stellar.|
|NGC 6638||Globular Cluster||98x||Loose globular cluster, moderately bright and partially resolved. Possibly type 8, definately no core.|
|M 55||Globular Cluster||98x||Messier globular cluster. Very large and loose (type 10) globuar cluster. Fills the FOV and is very even in brightness.|
|NGC 5822||Open Cluster||98x||Very large bright open cluster with perhaps 250 stars. Loose but very well populated.|
|NGC 5844||Planetary Nebula||98x||PN in Triangulum Australe less than a degree from the Circinus border. Large and well defined, no central star noted.|
|NGC 5927||Globular Cluster||98x||Moderately faint globular cluster on the Norma / Lupus border. Small and probably about type 8.|
|NGC 5979||Planetary Nebula||98x||Easy PN, small and round. No other features of note, maybe higher power would help.|
|NGC 5946||Globular Cluster||98x||Faint, small, globular with an even brightness. A star is involved on the SW edge of the globular. Possibly type 9.|
|NGC 5999||Open Cluster||98x||Open cluster with about 50 members. Very even in brightness, compact and sparse.|
|NGC 5882||Planetary Nebula||98x||Small round planetary nebula. Very colourful being green, very planet like. A bright orange star (8th Mag) SE of the nebula.|
A few issues tonight with eyepieces that were not clean, some bright stars looked terrible but nothing a good clean won't fix. The 17mm Nagler was the best so I used this without the Paracorr. DSCs worked well again tonight.
A good amount of observing was done, despite the cloud coming through at 8PM for 20 minutes and then from 9:30 onwards. At one point I was packing up at 8:15PM, but held out for another hour once the skies cleared again.
A couple of green looking PNs tonight. NGC 5882 and NGC 6572. Good exponents of colour in deep sky objects. Both objects could have done with more power.
Home by 10:30 PM.
Photo of Dob while Alan and Dave were setting up
|Auckland, New Zealand|
|36° 55' 09 " South, 174° 43' 30" East|
|-- The Southern Sentinel --|