Has anyone observed the NGC 128 group of galaxies? The only information I seem to find is this: http://observing.skyhound.com/archives/oct/NGC_128.html
Clear Skies
Regards
Akarsh
Has anyone observed the NGC 128 group of galaxies? The only information I seem to find is this: http://observing.skyhound.com/archives/oct/NGC_128.html
Clear Skies
Regards
Akarsh
18" f/4.5 Obsession dob "Romela"
6" SkyQuest Orion dob
Garrett Optical 25x100
Homepage
DSS Tool : Logbook Project : KStars
The Astronomy Connection : Austin Astronomical Society : Bangalore Astronomical Society
I've seen the grouping of NGC 125-128 and 130 earlier this year with 12". The tight trio 127, -8, -30 is very nice.
Always worth a visit http://www.deepsky-visuell.de/ Arkash (Zeichnungen>Galaxiengruppen/-haufen>NGC 128-Gruppe) and I'm pretty sure Steve has something at his pages.
16", 360x-600x, NELM 6m+, Seeing III
NGC128-Gruppe.jpg
Very sharp X-bar in 128 there, Uwe, excellent observation. I could only see it as distinctly angular and boxy. The bend in the disk is also a nice feature.
Hi Ivan,
nor really an X-bar as the photos shows but a necking in the middle was a distinct detail. The bend was also a little surprise but visible.
Have yet to observe it, but here's some info:
NGC128.jpg
Victor van Wulfen
clearskies.eu - Clear Skies Observing Guides - CSOG - Blog - Observing Log - Observing Sessions
SQM is nothing, transparency is everything.
Hi Akarsh,
See the third one down.
http://www.faintfuzzies.com/OR-Oct222011-SR.html
Dear all,
It's very encouraging to know that the features of the box-shaped galaxy are nicely visible in small aperture. Uwe's sketch really makes me want to try this the next time I get a chance!
I have a question for Alvin (and also others): how do you estimate the length of features in arcminutes? Do you compare it against some other separation and thereby deduce it, or do you have a metrology eyepiece?
Regards
Akarsh
18" f/4.5 Obsession dob "Romela"
6" SkyQuest Orion dob
Garrett Optical 25x100
Homepage
DSS Tool : Logbook Project : KStars
The Astronomy Connection : Austin Astronomical Society : Bangalore Astronomical Society
Akarsh,
I estimate the size relative to spacing between two similarly spaced field stars. I do a quick rough sketch. One of the thing I notate is which pair of stars is closest (i.e. same, slightly smaller, slightly larger). I go home and use MegaStar with DSS overlay to determine spacing (size).
If there isn't enough field stars, I use the estimate based on the actual field of view and experience. Since I have been doing this for 4 decades and figure that I can roughly estimate the size based on a given magnification and actual field of view.
Akarsh--
FWIW, I estimate sizes based on the size of the true field of view (as Alvin does), using the smallest TFOV that can contain the entire object--usually the 0.2-degree field of a 6mm Radian in my 12.5" Dob.
I find magnitudes to be much harder than sizes to estimate, especially with DSOs!
Thank you, Alvin, and KidOrion for your responses. I'll try to incorporate this habit in my observation.
Regards
Akarsh
18" f/4.5 Obsession dob "Romela"
6" SkyQuest Orion dob
Garrett Optical 25x100
Homepage
DSS Tool : Logbook Project : KStars
The Astronomy Connection : Austin Astronomical Society : Bangalore Astronomical Society