Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
Hey everyone, I want to know if finding MGC7027 will be tough. Since some Planetaries are small like stars, is this one worse? It looks pretty cool in pictures, even though that's what I don't expect to see. So, should I search the area with a 17mm at 65x, or a 25mm at 45x?
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
Tony Flanders
Carpal Tunnel
Reged: 05/18/06
Posts: 2098
Loc: Cambridge, MA, USA
|
|
Quote:
Hey everyone, I want to know if finding MGC7027 will be tough. Since some Planetaries are small like stars, is this one worse? It looks pretty cool in pictures, even though that's what I don't expect to see. So, should I search the area with a 17mm at 65x, or a 25mm at 45x?
NGC 7027 isn't especially small as planetary nebulae go, but it's extraordinarily bright. And in a strange way, that actually makes it harder to recognize as a DSO, because it looks so very much like a star. With practice, you should be able to tell that this kind of thing is nonstellar at 65X or even 45X, but that might be a little tricky at first. Smallish planetary nebulae typically require at least 100X for a good view.
As I always tell everybody, "searching around" is usually a pretty unprofitable way to find deep-sky objects. It's great when it works, but it's tedious and unreliable for things that are hard to recognize at low power, either because they're too small or too faint.
A far better way is, using a star chart, to center your telescope's field of view on the spot where you know the object must lie, and then crank up the power, use averted vision, or whatever it takes to see it.
A handy alternative with planetary nebulae is to "blink" them with a narrowband filter. Using a low-power eyepiece with long eye relief, move the filter between your eyepiece and your eye, and then remove it again. All the stars will dim tremendously through the filter, but planetary nebulae shine on almost unchanged.
--------------------
Tony Flanders
eyeglasses
6x15 and 8x32 monoculars
8x25, 7x35, 10x30 IS, 10x50, and 15x70 binoculars
70mm and 100mm achromatic refractors
4.5", 7", and 12.5" Dobs
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
OK thanks Tony. Maybe tonight or tomarrow night I'll look again, I do kinda know about where it is.
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
I'm still working on the tough Blue Flash, and will attempt the Helix again. I know right where the Helix is, so I'll try centering the area, then put the Ultrablock in.
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
Lard Greystoke
sage
Reged: 07/27/08
Posts: 201
Loc: Ohio
|
|
For individual objects I like to use the Triatlas at www.uv.es/jrtorres . I use the "C" atlas index to find the section of the sky, locate the object, blow it up until the field is easily visible, then print that particular view.
Once you know where it is in relation to the field, center it and keep popping in eyepieces. Planetaries are not always evident at lowest power.
--------------------
Lard Greystoke
10" Odyssey Compact
"With Tantor, the elephant, he made friends. How? Ask me not."
|
Achernar
Post Laureate
Reged: 02/25/06
Posts: 3721
Loc: Alabama, USA
|
|
Try looking for it around 100X or more, it's sorta looks like the outline of a cat's eye and is quite bluish and very bright. It's small so you need decent magnification to tell it apart from background stars.
Taras
--------------------
10-inch F/4.5 Discovery Dob
6-inch F/8 Homebuilt Dob
4 1/4-inch F/4 Homebuilt reflector
|
scopethis
sage
Reged: 05/30/08
Posts: 239
Loc: Kingman, Ks
|
|
From my notes, 7027pn in Cygnus: with 10" SCT @ 78x. In a rich star field; is the "fuzzy star" in FOV that will not focus. At 147x the object is bright and oval in shape. With OIII filter all stars eliminated; planetary is very bright and oval. There is a hint of a dim halo surrounding the brightness of object. Object takes hi magnification well.
|
Tony Flanders
Carpal Tunnel
Reged: 05/18/06
Posts: 2098
Loc: Cambridge, MA, USA
|
|
Quote:
OK thanks Tony. Maybe tonight or tomarrow night I'll look again, I do kinda know about where it is.
Kinda sorta doesn't cut it! Here's a pair of charts that should let you center your scope on NGC 7027 before you start to look for it.
--------------------
Tony Flanders
eyeglasses
6x15 and 8x32 monoculars
8x25, 7x35, 10x30 IS, 10x50, and 15x70 binoculars
70mm and 100mm achromatic refractors
4.5", 7", and 12.5" Dobs
|
Fiske
Carpal Tunnel
Reged: 03/14/04
Posts: 2057
Loc: Missouri / United States
|
|
Tony:
I had a look at 7027 last night. Your detailed finder chart is a bit misleading. The PN is extraordinarily bright, easily visible even in a 60mm finder from my urban backyard. Most of the fainter stars in the detailed finder just add confusion. The pn itself appears as about the same magnitude as the brighter field star at 10:00 oclock and the two brighter stars at 2:00 oclock. The third star that makes a right triangle with those two is also visible in the finder. That is about it in the near vicinity of the pn.
Even in the finder, the pn has a slight blue-green tint, though it looks stellar otherwise. In the main scope, XT-8 with 17mm Type 4 eyepiece (82.5x 1 degree FOV), it is obviously non-stellar with a decidedly blue-green color obviously different from the surrounding stars.
At higher magnification (5mm T6 -- 280x, 42' FOV) it is an intriguing object, with nebulosity fanning to the east from a bright point (the CS?) in a comet-like shape. A very enjoyable object. I didn't even bother with an OIII or UHC filter. It is that bright and that obvious. As I think you mentioned earlier, observers who have trouble locating it are probably mistaking it for a star, expecting a larger, more nebulous object.
I suspect it can be seen even with binoculars, though you would have to know what it is -- it would really just look like a star in binos.
--------------------
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
|
Fiske
Carpal Tunnel
Reged: 03/14/04
Posts: 2057
Loc: Missouri / United States
|
|
Quote:
I'm still working on the tough Blue Flash, and will attempt the Helix again. I know right where the Helix is, so I'll try centering the area, then put the Ultrablock in.
Jake:
You are not likely to have much luck with the Helix if your observing site is affected by light pollution. And, paradoxically, the Helix is easier to see in smaller aperture, wide-field instruments. Lower magnification and a wide FOV are keys. Higher magnification dims the object so much that it is difficult to observe. It is a fairly easy target with binoculars from a dark sky site.
--------------------
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
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
Oh really? I found the Heilx, Blue Flash, 7027, and very vaguely, M33. I was right centered on it, but didn't see much, if anything at all, the 40mm showed a biggish dim cloud. Good night last night!
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
The Helix was easy to notice when I scanned, and when still, with Averted vision, it appeared like a BIG ring. Blue Flash was found w/ultrablock and 25mm, it looked almost like a Cluster, but I knew it wasn't. I noticed the edges. 7027 was like a green star, and it was rectangle shaped at 170x.
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
Fiske
Carpal Tunnel
Reged: 03/14/04
Posts: 2057
Loc: Missouri / United States
|
|
Congratulations, Jake. 
What is your observing site like? I mean, how dark is it? It must be pretty good. (Better than my backyard, anyway!)
--------------------
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
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
My Backyard! Red skies, maybe a limiting Mag of 5-5.2 on a REALLY GOOD night! On that really good night, the Milky Way overhead is patchy, and the divide is VERY vaguely visible, and both the star clouds glow faintly. Not to bad for 15 miles from Philly, but that's only on rare GREAT nights. I'm only 15 miles SE of Philly in Williamstown. The sky can be filled with stars sometimes if a Cold Front passed, and the Summer sky can be breathtaking.  
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
JakeT93
member
Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
|
|
Tonight I found NGC6818, 7006, and 6934. I tried to find 891, but had no success. I was at the right place. Would anyone happen to have a finder chart for this?
--------------------
-Jake the Snake
My equipment:
Orion DSE 10" Light Bucket!
10x50 Finder and ebay bracket
40mm GSO Plossl
32mm Celestron Plossl
2x Antares Barlow
25mm and 6.7mm Meade 3000 Plossls
Orion Explorer II 10mm and 17mm Kellners
Orion SkyGlow Ultrablock
Antares ND25
70 M's Obsreved
All Planets seen
|
BillFerris
Carpal Tunnel
Reged: 07/17/04
Posts: 2582
|
|
Quote:
I tried to find 891, but had no success. I was at the right place. Would anyone happen to have a finder chart for this?
NGC 891 is conveniently located 3.4 degrees due east of 2.17 magnitude Alamach, Gamma Andromedae. Another nearby landmark is 5.8 magnitude HD 14622, which is 57'.3 due south of the edge-on galaxy.
Which charts do you have? NGC 891 is usually plotted on all but the most basic chart sets.
Bill in Flag
--------------------
Grand Canyon Adventure
Lowering the Threshold
18" Obsession
4.5" Meade 4500
10x50 Swift Audubon
Cosmic Voyage
|
scopethis
sage
Reged: 05/30/08
Posts: 239
Loc: Kingman, Ks
|
|
Quote:
Tonight I found NGC6818, 7006, and 6934. I tried to find 891, but had no success. I was at the right place. Would anyone happen to have a finder chart for this?
Perhaps a little helpful hint with the galaxy NGC 891 being observered with a 10" scope. This puppy is difficult in moderate LP areas; from hence my notes. It is large but dim, almost transparant except for the central hub (edge-on galaxy.) I've since moved to a rural site with a very dark sky; now I'm gonna have to look at this one again thanks to you. 
|
Starman1
Vendor - Scope City
Reged: 06/24/03
Posts: 10957
Loc: Los Angeles
|
|
891: let it rise. This is currently an am object for us. Resist the temptation to look for it when it is less than 30 degrees above the horizon.
7027: brite,round,bluish,uniform briteness,slight flattening 1 edge
That observation was made with a 4" SCT. So it isn't difficult.
One note: use at least 100X. It bears magnification well.
In my 12.5", it's clumpy and not round at all, so this is an object that changes appearance a lot with aperture.
--------------------
Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
|
sgottlieb
sage
Reged: 07/22/07
Posts: 243
Loc: SF Bay area
|
|
NGC 7027 is a remarkable object at high power in dark skies, though easily visible (as a star) in my finder. Here's another observation to add to the mix from last year --
18" (9/10/07): visible as a mag 8.5-9 "star" at 12.5x in the 80mm finder and easily identified using an OIII blink. At 175x in the 18-inch, appears as a small, very high surface brightness oval with a blue-green color. At 450x, this planetary is elongated 3:2 NW-SE, ~18"x12" and has an unusual bipolar appearance with two lobes. The 10" NW component has a very high surface brightness and contains a quasi-stellar brighter knot on its west edge. A fainter lobe juts out towards the SE and is slightly smaller (~8"). At 565x the SE lobe seems incomplete as if it was partially obscured and two lobes are encased in a thin outer envelope. The view was fascinating at 807x with the sense of peering at a 3-dimensional object - the brighter NW lobe being closer and the partially overlapping SE lobe extending away in space. At this power both lobes were clearly irregular in shape and surface brightness.
--------------------
Steve Gottlieb
18" f/4.3 Starmaster
Adventures In Deep Space - New article on MASH planetaries
7500+ NGC/IC Visual Descriptions
NGC/IC Project
|
Starman1
Vendor - Scope City
Reged: 06/24/03
Posts: 10957
Loc: Los Angeles
|
|
Steve's observation matches this picture:
here
That his comments so closely match the image is a strong positive comment on his obsevational prowess!
Steve, your comments perfectly describe the object.
Good show!
--------------------
Don Pensack
12.5" Truss Dob, 5" Maksutov
Sustaining Lifetime IDA member, TeleVue junkie
|
|
5 registered and 2 anonymous users are browsing this forum.
Moderator: matt, Olivier Biot
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 538
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
[Re: 