Finally had clear skies last night!..and really a great observing night

from NGC-6527- that was actually green( can anyone explain why this shows as green? , first time saw color in a nebula w/o a   filter)

to NGC-6826, that if stared at central star did 'blink" pretty cool

to NGC-7008 that really could see the nebulosity and NGC-6818,6571

to using a Filter on m-17 and 27 and m-57  to really bring out the nebulosity really made for quite a night, even got in some galaxies NGC-7331 really bright and while a little tough the Stephan's quintat was able to see( ngc-7319,7320 and 7317, 7318a/b) and of cours ethe cool clusters of m2 m11 m12 m10

2 questions for anyone.

1. have a meade 10 inch, and  using my 40 wide angle( and then 26 and 18) to try and see either the veill nebula or north american nebula know right on both and while could see the stars, didn't see any nebulosity, are both more nice pictures by hard unless a "dark night" area to see teh nebulosity?

 2. On m-16, again know right on it,but again can't really see anything with or without a o-iii filter.. As said have no problem with m-17,but m-16 still eludes me

any suggestions?

thanks!

 

 

NGC 6527 is a dim galaxy in Hercules.  Did you mean NGC 6572, which is commonly known as (when seen as green) the Emerald Nebula or (when seen as blue) the Blue Racquetball Nebula, in Ophiuchus?

http://observing.skyhound.com/archives/jul/NGC_6572.html

Most planetary nebulae that exhibit color appear to me as being blue or blue-green.  NGC 6572 is the only only that looks green to my eyes.  The Emerald Nebula, a very high surface brightness planetary, is quite young and is thus "optically thick".  The UV radiation that its central star produces is largely absorbed and reemitted at the chief nebular wavelength of 500.7 nanometers (OIII lambda). 

http://www.delphes.net/messier/planetar.html

Dave Mitsky

yeah meant 6572, and first time saw anything green like that, thought really cool.

and the others all seem white, never seen a blue one either..Any suggestions on M-16?  or veil nebula? or is it just because in a backyard and not a dark sky?

Colorful planetary nebulae include NGC 40, NGC 3242, NGC 6210, NGC 6543, NGC 6572, NGC 7009, and NGC 7662.

Larger apertures mean more color.  In addition, color sensitivity varies with age and individual eyesight.

Good views of M16 and the Veil Nebula complex do require fairly dark skies.

Dave Mitsky

I viewed NGC-6826 last night with my Celestron C11 and 17mm Nagler T4 in clear skies, although a moderate light pollution problem at my suburban location.  Very sharp, and it blinked at me as I looked directly at it and then away.  Color was a somewhat dull bluish green.  I also viewed it with an Oiii filter on the eyepiece - more of a green color, but couldn't see the center star with the filter.

I tried to view the Veil Nebula with a 40mm W.O. SWAN, but wasn't able to see it - could very clearly see 52 Cygni, but not the nebula.  I have seen it at a dark sky site with the 40mm ep, but just couldn't see it from my home location.

thanks dave!

as a novice, not sure sometimes if worth "chasing" something, or if instead of getting fustrated, just realize either because of light pollution or not enough aperture, i'm just not going to see it from my back yard, and move on to better targets that can enjoy and marvel at within by backyard parameters..

The nebulosity of M16 is much more subtle that 17. With 10" at a dark site it is visible even without a filter. I have a suspicion your site is just too bright. It's so much better with either an OIII or narrow band filter.

 Regarding your question on the two other nebulae they are very big. Even with a 40mm eyepiece in your scope and its long focal length only a small portion of NGC 7000 would be seen at a time. With an OIII filter pan around a bit and see if you can make out "Mexico". On the Veil you would also only get a portion of one of the strands. After starting with 52 Cygni pan to the NE looking for the eastern arc as it is much brighter than the one that overlays 52 Cygni. Definately use the OIII on this one.

My advice, put a little gas in the car and drive towards the dark, closer to next new Moon.

Bill

raleigh_star_gazer:

thanks dave!

as a novice, not sure sometimes if worth "chasing" something, or if instead of getting fustrated, just realize either because of light pollution or not enough aperture, i'm just not going to see it from my back yard, and move on to better targets that can enjoy and marvel at within by backyard parameters..

That's why an observing guide is a very good thing to own.  The best one currently available is The Night Sky Observer's Guide.

Dave Mitsky

I saw the Veil Nebula (eastern and western) portion about 2 weeks ago with no moon from my backyard barely without a filter and then using an Ulbrablock NB filter by Orion. Showed up really well in my 32mm and then in a 21 inch Stratus with both my Ultrablock and the OIII that I have (though not enough FOV for the Stratus to capture the whole thing). I live in a yellow zone. Having said that I have also seen them from a dark site (blue and black) without the filter and they are much more impressive but a filter just seems to bring out more detail. So don't get frustrated sometimes its having the right equipment at the right location with the right skies that determine if you see something, or how much you see of it.