NGC6144
member
Reged: 07/24/08
Posts: 47
Loc: Virginia Beach, VA
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Anyone ever have good experiences with this? I once tried to find it and failed and had another observer put it in my scope and it was still difficult to see, however two nights ago for some reason I tackled it with ease. very nice globular.
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Orion Skyquest XT10i w/telrad
21mm Hyperion
8mm hyperion
Messier objects observed this year:65
caldwell objects observed this year:10
Herschel 400 objects this year: 9
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Achernar
Post Laureate
Reged: 02/25/06
Posts: 3720
Loc: Alabama, USA
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NGC-7006 is within range of a 6-inch despite it's enormous distance of at least 185,000 light years. However, it is a very hard object to find under murky skies. It's impossible to resolve any of it's stars unless you have a very large telescope, dark skies or both. Like the even more remote globular NGC-2419 in Lynx, NGC-7006 looked like a comet like spot in a 17-inch Dob. Now that you got NGC-7006 under your belt, check out NGC-6629 in Hercules and NGC-6934 in Delphinus. Both are brighter than NGC-7006, and much closer to us as well at a distance of 99,000 and 57,000 light years respectively. At high power you should see at least a graininess around the edges if the skies are good. When winter comes along, you have the remote globulars NGC-2298 in Puppis and NGC-2419 to test your observing skill on. I've located all of these objects with a 6-inch so you should get a good view. You can also pursue a good many of the Terzan and Palomar globulars from a dark site. These are real challenge objects, and just finding them is a big feather in your cap. Congratulations on your find and clear skies!
Taras
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10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
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NGC6144
member
Reged: 07/24/08
Posts: 47
Loc: Virginia Beach, VA
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I've already logged 6934, fairly easy, the globular that gave me the msot trouble so far, was NGC 6144 in scorpius.
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Orion Skyquest XT10i w/telrad
21mm Hyperion
8mm hyperion
Messier objects observed this year:65
caldwell objects observed this year:10
Herschel 400 objects this year: 9
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Achernar
Post Laureate
Reged: 02/25/06
Posts: 3720
Loc: Alabama, USA
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That globular is a ghost that's easily overlooked in the glare from Antares. Another one in Scorpius that is frequently missed is the globular NGC-6453. It's behind M-7 and I never noticed it until I looked at M-7 real closely from a dark site. Lo and behold, there it was among M-7's stars, right where the chart showed it to be. I located a couple of the Palomar globs only after looking at the field several times before I spotted a spectral glow at the right spot.
Taras
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10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
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NGC6144
member
Reged: 07/24/08
Posts: 47
Loc: Virginia Beach, VA
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Im going to have to try 6453 tonight. Im wondering If I can catch it from mag 5.8 skies in my 10inch
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Orion Skyquest XT10i w/telrad
21mm Hyperion
8mm hyperion
Messier objects observed this year:65
caldwell objects observed this year:10
Herschel 400 objects this year: 9
Edited by NGC6144 (08/03/08 05:43 PM)
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David Knisely
Postmaster
Reged: 04/19/04
Posts: 6778
Loc: Beatrice, Nebraska
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We observed this one in a 25 inch f/5 Obsession at the Nebraska Star Party and got some good resolution on it. It wasn't exactly the most stunning sight, but it was pretty and worth going after. Clear skies to you.
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David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
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F.Meiresonne
Carpal Tunnel
Reged: 12/22/03
Posts: 2956
Loc: Eeklo,Belgium
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We caught NGC 7006 last friday too. In the 18" it became granular but could be truly resolved in to stars. Nice glob though.Allthought is did not boosted the mag completely...
Last week i saw it in my 8" at home. Rather small, fuzzy round softball...
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Freddy Meiresonne
Obsession 18 inch #1638
Orion Optics 8 inch F/4.5 -1/8 wave optics -Vixen GP-E
20x80 Helios Stellar Binos
10x60 Helios Quantum 4(= Obie Mariner)
10x50 Helios Nature sport plus
8x40 Helios Nature sport plus
Eyepieces in use :Pan 35,24,19, N13T6, Pentax 10 XW, N9T6, Ultrascopic 7.5, TV2, baader ortho 12.5 and 9 mm
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NGC6144
member
Reged: 07/24/08
Posts: 47
Loc: Virginia Beach, VA
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Achernar, I found NGC 6453 tonight, Easy to locate, difficult to see, definitely the dimmest glob i have viewed probably.
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Orion Skyquest XT10i w/telrad
21mm Hyperion
8mm hyperion
Messier objects observed this year:65
caldwell objects observed this year:10
Herschel 400 objects this year: 9
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Never
super member
Reged: 11/22/05
Posts: 109
Loc: Finland
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NGC 7006 is actually quite visible from a reasonable dark site even with a small 3" refractor. With an 8" dobson, only a darker center can be seen. But indeed, a good test of sky darkness.
/Jake
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Jaakko Saloranta - Some basic sketches.../
8" Orion DSE
4" Sky-Watcher
3" Konus RFT
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EdZ
Professor EdZ
Reged: 02/15/02
Posts: 12565
Loc: Cumberland, R I , USA42N71.4W
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Sure didn't look like it would in a 25", but I've searched for 7006 many times and found it once or twice using 100mm binoculars from my yard under mag 5.6 skies. very difficult.
Using 20x80s under mag 6.0 Maine skies, near M4, and very near Antares, I found the globular ngc6144, just a faint diffuse glow.
edz
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Teach a kid something today. The feeling you'll get is one of life's greatest rewards.
member#21
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Fiske
Carpal Tunnel
Reged: 03/14/04
Posts: 2057
Loc: Missouri / United States
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I observed 7006 with my 22-inch Dob from my backyard in midtown KC both Saturday and Sunday nights. The concentration class for the globular is 1 (on a 1 to 12 scale, 1 being the most concentrated). This makes it reasonably easy to see, even from an urban location under hazy conditions. Less concentrated globulars are much more difficult to observe from light polluted skies because they don't provide enough contrast against the background sky glow.
Saturday night was extremely hazy, so much so that I could not see the Delphinus diamond naked eye from my backyard. But, I could still see 7006, although it was faint in averted and would probably be very difficult with a moderately sized scope under those conditions.
Sunday night was much clear -- Delphinus was easily visible naked eye. I even glimpsed 61 Cygni naked eye. That's about as good as it gets from my backyard (mag 5.2). Sunday night, 7006 was quite easy to see in the 22-inch. I didn't try it in my 8-inch XT, but I think it would have been observable without too much trouble.
By comparison, NGC 6712, a globular near M11 discussed in another post on this forum, has a concentration class of 9 -- which means much less concentration. Near the bottom of the scale, in fact. Even though this globular would seem to easier to observe (8.1 mag versus 10.6 for 7006) those are integrated magnitude values and are actually spread across the entire object. 6712 is 8 arc-minutes wide, versus 3.3 minutes for 7006, so the light is much more spread out.
As a result, 6712 is much more difficult to see. I wasn't able to observe it with the 22-inch on Saturday night. Sunday I could readily see it, but it was fainter than 7006 by a lot. Still, a beautiful sight though, a large hazy patch of nebulosity with about 20 stars winking in and out of view with the seeing.
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Fiske Miles
Nikon 8x42 LX / 12x50 SE Binos
Mini Borg 60ED, TV-101, AT80Ach, XT-8, C11/CI-700, 22-Inch Dob
Way too many Nagler eyepieces
http://www.fiskemiles.blogspot.com/
www.fiskemiles.com
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Starman1
Vendor - Scope City
Reged: 06/24/03
Posts: 10955
Loc: Los Angeles
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Visible in my 8" SCT, it was slightly condensed, and only resolved around the edges. But obviously a globular.
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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stevecoe
Reged: 04/24/04
Posts: 2129
Loc: Arizona, USA
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Using my old 18" f/6 at 210X, I saw 3 stars superimposed on the surface of NGC 7006. One was held steady, the other two appeared and disappeared with the seeing. This was on a night I rated 8/10 for transparency and 7/10 for seeing. While viewing this deep space wanderer, think of the view of Our Galaxy you would have from 180,000 light years away.
Clear skies;
Steve Coe
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150mm 6" f/8 Celestron Refractor on Sirius Mount
80mmED 3" f/7.5 Orion Refractor
Author "Deep Sky Observing" Springer-Verlag
Author "Nebulae and How to Observe Them" Springer
New Canon Xt astrocamera with Hutech modification
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Starman1
Vendor - Scope City
Reged: 06/24/03
Posts: 10955
Loc: Los Angeles
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I distinctly noted seeing a few stars resolved in the outskirts with the 8", and photometric studies show there should be about a half dozen outer stars viewable in that aperture under transparent sky conditions.
May I presume, Steve, you meant seeing a few stars on the central part of the globular? In which case, that was a great observation. I don't think there's anything brighter than mag.17 there. Ah, the advantages of 18" of aperture.
I'm going to have to try for it in the 12.5" next month.
This and NGC2419 are considered the most distant globulars in the Milky Way, IIRC, so, for most of us, it will be the most distant stars we can see, as they are more distant than the Magellanic Clouds (barring seeing a few supergiants in NGC206 in M31).
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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RRaubach
AstroCowboy
Reged: 01/26/05
Posts: 2173
Loc: Douglas (Converse County),WY
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Don;
Curiosity note: what magnification did you use for picking up the handful of stars in the halo of n7006? I have observed n7006 many times, but never really "pushed the limits of magnification." If the weather EVER decides to cooperate,  I'll have another shot at it.
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Rodger
Meade SN-10 (UHTC) on Tak EM-200 mount/Antares rotating rings. Moonlite focuser.
Parallax 14.5" Newtonian on HD 200 mount (arriving soon!) w/ conical Royce mirror.
TMB 203 f/7 APO refractor on Tak NJP-160 mount.
Discovery 12.5" PDHQ
Schneider 18x80 "Flakfernrohr" binoculars/tripod mounted. Canon 15x50 IS binoculars
Unihedron Sky Quality Meter
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Starman1
Vendor - Scope City
Reged: 06/24/03
Posts: 10955
Loc: Los Angeles
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I don't have a record, but my favorite eyepiece in that scope for small object viewing was my 6.7mm Meade 4000 UWA, yielding 303X. That was usually about the limit on high mag. most nights. Occasionally, I could use the 4.7 (432X), but usually only once a year or so.
In the 12.5, I can already tell that 7-8mm will be my normal high power (228-261X)--not because of seeing conditions, but because I just don't need any higher magnification to see truly faint stars.
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Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
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nytecam
Post Laureate
Reged: 08/20/05
Posts: 4813
Loc: London UK
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These are great obs on a challenging object  Severe LP precludes any useful views but I've recorded it lately via various scopes eg 70mm OG , 90mm OG and resolved via 30cm SCT which may serve as finder-charts. 7006 has a pair of 'brightish' stars within the field immediately south 
Another challenging summer globular is NGC 6426 
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Nytecam 51N 0.1W
Meade 30cm LX200+ETX-70+DS-2090+C8+Ha+CaK PSTs SBIG SGS+homebuilt spectrographs
Starlight SXVF_M9/Lodestar/Canon 300D DSLR/Fuji E550
My observatory build-ETX-70 imaging-spectro page
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BillFerris
Carpal Tunnel
Reged: 07/17/04
Posts: 2582
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This is a really nice object in moderate aperture under a dark sky: NGC 7006. In the 10 inch, it's highly concentrated with a noticeably brighter core region. Though my sketch shows several faint stars around the edges, these all range from the mid-13's to the mid-14's in magnitude. It's questionable that these nearby outliers are cluster members as NGC 7006's brightest citizens weigh in at a paltry 15.6 magnitude while the more typical residents dimly glow at almost 19th magnitude. Nevertheless, the rich star field frames this fine globular, nicely, making for a very pleasing view.
Bill in Flag
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Grand Canyon Adventure
Lowering the Threshold
18" Obsession
4.5" Meade 4500
10x50 Swift Audubon
Cosmic Voyage
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Fiske
Carpal Tunnel
Reged: 03/14/04
Posts: 2057
Loc: Missouri / United States
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Quote:
These are great obs on a challenging object Severe LP precludes any useful views but I've recorded it lately via various scopes eg 70mm OG , 90mm OG and resolved via 30cm SCT which may serve as finder-charts. 7006 has a pair of 'brightish' stars within the field immediately south
Another challenging summer globular is NGC 6426
Nytecam:
I found NGC 6426 to be a much more challenging object than 7006 from my urban backyard. With a 22-inch Dob I was able to observe 7006 easily, but was unable to see 6426 even with the aid of custom star charts. In later comparing object data for the two globulars, I noticed that 6426 has a concentration class of 9 (very low concentration on a 12 point scale) while 7006 has a concentration of 1 (the highest concentration rating). Thus, 7006 exhibits far more contrast against background sky glow than 6426.
According to the Uranometria Field Guide (2nd ed), 6426 has a total Vm of 10.9 mag and a diameter of 4.2 arc-minutes, compared with 10.6 mag and 3.6 minutes for 7006. The magnitude and diameter figures taken alone don't give an accurate idea of the difficulty in observing the two objects. The concentration class is far more significant for urban observers.
I haven't given up on the object. I'm making a higher resolution charge with fainter stars to pinpoint the object's position more accurately. It might be observable from my yard with higher magnification on a clear night. We'll see. That observation may have to wait for spring, however, due to a large hackberry tree in our backyard. 
I do plan to take a run at resolving a few stars in 7006 at high magnification during the next new moon.
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Fiske Miles
Nikon 8x42 LX / 12x50 SE Binos
Mini Borg 60ED, TV-101, AT80Ach, XT-8, C11/CI-700, 22-Inch Dob
Way too many Nagler eyepieces
http://www.fiskemiles.blogspot.com/
www.fiskemiles.com
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scopethis
sage
Reged: 05/30/08
Posts: 239
Loc: Kingman, Ks
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My notes on 7006. With 90mm scope at 59x-a small round blur, easiy missed. a hint of brightness from the center. With 10" SCT at 147x outer stars gritty and center is grainy and fairly bright. Not a large cluster. AV (averted vision) really enhances view, becoming brighter at center and larger. No real resolve of stars. As a note, this view was from a very dark rural site.
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