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Observing >> Deep Sky Observing

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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Blinking nebula hard-ish to find? new
      #2660024 - 09/24/08 06:23 AM

Made another try to find the blinking nebula yesterday. But no luck again. I contribute part of that to the fact that i was all but lying on the lawn, trying to find it.

I used a 32mm ep to maximise my views.

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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JakeSaloranta
member


Reged: 09/18/08
Posts: 37
Loc: Finland
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2660060 - 09/24/08 07:37 AM

It is not hard to find. If you think you have the planetary in the field of view, use blinking with filters to boost it out or simply use higher magnification. It is pretty obvious when you get it for the first time and non-stellar once you get it what it means.

And use a good map and move east from 16. Cyg and there you have it.

/Jake

--------------------
"Sword is not good or evil, but a reflection of the person who is holding it."


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tigerroach
sage


Reged: 08/13/08
Posts: 296
Loc: Houston, TX
Re: Blinking nebula hard-ish to find? new [Re: JakeSaloranta]
      #2660106 - 09/24/08 08:25 AM

With your low-power eyepiece it will be very small, that could be what is giving you trouble. You could be looking right at it and not realizing it.

--------------------
Brian

TeleVue TV-102, Gibralter alt-az mount
Webster 14.5" f/4.3 truss dob *under construction*
Canon 10x30 IS binocs



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coutleef
scholastic sledgehammer
*****

Reged: 02/21/08
Posts: 806
Loc: Montreal and St-Donat, Québec,...
Re: Blinking nebula hard-ish to find? new [Re: tigerroach]
      #2660178 - 09/24/08 09:09 AM

You may need to boost your magnification to 150x to see that one. Your are not trying to find a diffuse nebula but a planetary.

I bet you have seen it but just did not realize it (that often happens to me!). Just keep trying and you will get it soon. I find it more difficult to find objects when they are near the zenith also and the blinking from my area is quite high these days.

What star charts are you using?

--------------------
François
Nexstar 8 SE
50mm StellarVue finderscope, Astronomik UHC-E and Orion OIII filters
WO Swan 40mm; TV Pan 22mm; TV Nagler 9T6, 12T4, 17T4; TV Plossl 11mm and 15mm.
WO 2" dielectric diagonal retrofitted with Denk Power Switch (and now reach the zenith with the shorty adapter).


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sixela
Postmaster
*****

Reged: 12/23/04
Posts: 9488
Loc: Boechout, Belgium
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2660210 - 09/24/08 09:28 AM

Quote:

I used a 32mm ep to maximise my views.




Which means it was one of the stars in your field of view. This thing is *small*; don't expect it to jump at you at low power screaming "Hi, I'm a planetary nebula!". All it's going to look is slightly fuzzy and blue-green.

At higher power you'll see the star but the nebula will blink out with direct vision.

At even higher power you'll see the nebula with direct vision (but more faintly).

--------------------

400mm f/4.46 David Lukehurst truss Dobsonian on Tom Osypowski equatorial platform
Orion Starblast (114mm f/4 reflector, Alt/Az)


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Denis
sage


Reged: 12/24/05
Posts: 219
Loc: Rennes, France
Re: Blinking nebula hard-ish to find? new [Re: sixela]
      #2660455 - 09/24/08 11:55 AM

When you follow the line kappa/iota cygnus you'll find a nice pair of mag 6 star.
Then you'll have to follow a half circle of tenth mag stars eastbound :
http://www.reto.fr/cartes/imagepages/image25.html

--------------------
Canon 10x42 IS binoculars.
Meade sc 4" on homemade fork equatorial mount.
homemade 10" an 14" dobsonian
Nikon photogear.


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? new [Re: Denis]
      #2660572 - 09/24/08 01:11 PM

Thanks for the chart and info!

I´ll have another chance tonight probably. It´ll be my 4th night out in a row. It was a LONG time since that happened, weather has been terrible for a long time.

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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Bill Weir
scholastic sledgehammer


Reged: 06/01/04
Posts: 880
Loc: Metchosin (Victoria), Canada
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2660693 - 09/24/08 02:00 PM

You will know you are in the correct FOV when you find a very close pair of equal brightness(6th mag)stars. The PN is exactly 1/2 degree due east. So, use an eyepiece that will give you the 1/2 degree and centre those stars. Then, just wait a few seconds and the PN will drift right into the FOV.

Bill

--------------------
6'' Orion SkyQuest
12.5'' f/5 Custom Truss Dob
William Optics 80mm ZenithStar II ED Doublet
f/5 25" newtonian on a giant GEM, any time I want

Observing sessions grand total for 2007, 171.
So far in 2008, 111


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? [Re: Bill Weir]
      #2661969 - 09/25/08 05:50 AM

Bill, i saw the two stars yesterday, and i looked alot in the surrounding area as i thought it would be there.

I´ll give it another try like you said. It should work!

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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coutleef
scholastic sledgehammer
*****

Reged: 02/21/08
Posts: 806
Loc: Montreal and St-Donat, Québec,...
Re: Blinking nebula hard-ish to find? new [Re: Bill Weir]
      #2662069 - 09/25/08 07:54 AM

Got a good look at it using the chart of stars provided above. I had to put a UHC-E filter and crank the power to 150x

Beautiful with a green-blue colour. But i needed to get to higher mags than what you used

--------------------
François
Nexstar 8 SE
50mm StellarVue finderscope, Astronomik UHC-E and Orion OIII filters
WO Swan 40mm; TV Pan 22mm; TV Nagler 9T6, 12T4, 17T4; TV Plossl 11mm and 15mm.
WO 2" dielectric diagonal retrofitted with Denk Power Switch (and now reach the zenith with the shorty adapter).


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? new [Re: coutleef]
      #2664166 - 09/26/08 10:08 AM

I hope i can give it a try again tonight. Problem is that i have no good ep giving around 150x. My 6.5mm Plossl gives notoriously dark views. Maybee i can barlow my 18mm...

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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Achernar
Post Laureate
*****

Reged: 02/25/06
Posts: 3690
Loc: Alabama, USA
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2664297 - 09/26/08 11:13 AM

NGC-6826 is very bright but very small and bluish in color. You need much more magnification that a 32mm eyepiece yields to pick it out from the dense star fields around it. Look for an unusually bluish looking star and then switch to an eyepieces that gives at least 100 or 150X. The Blinking Planetary will be a oval disk that is easy to spot and it's one of my favorite planetary nebulae.

Taras

--------------------
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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stevek
Pooh-Bah
*****

Reged: 04/16/06
Posts: 1229
Loc: west michigan
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2664300 - 09/26/08 11:16 AM

I picked this one (ngc6826/blinking neb) out last night. akemag, its a target that is not very good below 150X = very small. Dont worry too much about the quality of your EP. If you can get it centered, its so bright that the 6.5 plossl should work fine. I thought it looked best at 300X (seeing at 400X was rotten).... also....If you like these small bright planetary nebs, a couple of others that are fairly decently placed for viewing include, ngc6543/CatsEye (in Draco) & ngc7662/BlueSnowball (in Andromeda). All 3 of these have very high surface brightness, dont need a filter, and can take all the mag you can throw at them.
Good luck & clear skies
Steve

FWIW, I tend to find & center them as tiny objects @ 92X with my 13mm, then replace the EP with the 6mm (200X), then the 4mm (300X) & then barlow the 6mm for 400X. Mags will be different for various EPs on your scope but I hope you get the 'idea'.

--------------------
DSO 8" f6 DOB w/ 8x50 RACI & 2"Crayford
1958 Sears Discoverer 76mm Refractor
GSO SV 30mm 2",21mm Hyp,13mm Strat,BO/TMB ver2-6mm & 4mm
1.25"Filters: DGM-NPB, 25%ND
1.25" plossls: 25mm,20mm,15mm,9mm
Orion 2X Shorty Barlow
Garrett Gemini LW 11x56mm binocs
BTG-10 4.0mW green laser pointer



"What is that burning in the sky? Tell me y'all..." Jeff Beck/Jan Hammer

Edited by stevek (09/26/08 11:28 AM)


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Southerner
sage


Reged: 08/15/07
Posts: 235
Loc: North Alabama
Re: Blinking nebula hard-ish to find? new [Re: stevek]
      #2664332 - 09/26/08 11:33 AM

I snagged this one last night as well. It was a devil to find but I was using too low a power, once the jump to 120 times, it was no problem. This is a very nice object!

--------------------
http://theskywasbruised.blogspot.com/

Canon Rebel dslr
Celestron c80 ED
Orion 8 inch xt
Orion 12 inch xt
Atlas Mount
One Half Breed Hound Dog
Phillips SPC900 WebCam


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JakeT93
member


Reged: 06/28/08
Posts: 177
Loc: Williamstown, NJ
Re: Blinking nebula hard-ish to find? new [Re: Southerner]
      #2666482 - 09/27/08 03:26 PM


Go slow following those 2 stars in the Swans wings, it was easy for me 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


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? new [Re: JakeT93]
      #2669290 - 09/29/08 02:32 AM

Thanks guys for your support

I had a try yesterday, again. But, and i think (hope) the fact that the ep is almost on the ground when centering this area, it´s hard to concentrate long enough to succed. I´m looking thru the ep at a very uncomfortable angle.

From what you say, this shouldnt be this hard.

I tried last time at 100x and 150x.

Next time i post on this thread, i will have found it.

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2686689 - 10/08/08 06:48 AM

Success! With my 18mm at 55x, i did find the VERY little nebula. It must have been it. Very small, round. What it was, it did "blink" at me. Tried at 100x, but lying on the ground, i just didnt find it again.

Now i know i CAN find it at least. I guess it´ll look better in some higher mag.

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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Southerner
sage


Reged: 08/15/07
Posts: 235
Loc: North Alabama
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2686805 - 10/08/08 09:01 AM

lying on the ground? Get a dobsonian!

--------------------
http://theskywasbruised.blogspot.com/

Canon Rebel dslr
Celestron c80 ED
Orion 8 inch xt
Orion 12 inch xt
Atlas Mount
One Half Breed Hound Dog
Phillips SPC900 WebCam


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akemag
sage


Reged: 10/26/07
Posts: 427
Loc: Sweden
Re: Blinking nebula hard-ish to find? new [Re: Southerner]
      #2686992 - 10/08/08 11:10 AM

Actually, i did
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/2686694/page/0/view/collapsed/sb/5/o/all/fpart/1
I just havent got it yet...

--------------------
Celestron Omni XLT 120
10" GSO DOB
Bresser Skylux 70mm
5mm Ortho
6.5mm, 25mm, 32mm Plossl
3.6mm, 10mm, 25mm MA
20mm Erfle
4mm, 10mm, RK12mm, 18mm RK20mm Kellner
8mm, 20mm Huygens
1.5-2x Barlow
Orange, Green, Variable Polarizing Moon filter


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Southerner
sage


Reged: 08/15/07
Posts: 235
Loc: North Alabama
Re: Blinking nebula hard-ish to find? new [Re: akemag]
      #2687276 - 10/08/08 02:02 PM

congratulations! And a good-sized one. That should be fun.

--------------------
http://theskywasbruised.blogspot.com/

Canon Rebel dslr
Celestron c80 ED
Orion 8 inch xt
Orion 12 inch xt
Atlas Mount
One Half Breed Hound Dog
Phillips SPC900 WebCam


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