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mypontiac
Pooh-Bah
Reged: 09/06/07
Posts: 1080
Loc: Austin, Tx.
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Hey Folks,
I recently purchased a NP 101 for doing some quicker viewing than with my CPC 1100 (Beast).
I wanted to check out the ring nebula as I understood it was pretty easy to see even in semiurban skies.
So last night I had the fortune of clear skies and my neighboors lights off.
I initially used my 13mm Ethos and picked it up as a hazy doughnut.
Went down to a 6mm Ethos and got a bigger hazy doughnut.
So it wasn't as impressive as in the pics you see all over, but I was very pleased to have found it.
Also saw M31 and M110 together quite nicely in the 6mm. That was a treat!
Would using a filter bring out any more contrast and color?
Sean
Edited by mypontiac (08/19/09 12:16 PM)
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David Knisely
Postmaster
   
Reged: 04/19/04
Posts: 8287
Loc: Beatrice, Nebraska
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Quote:
Hey Folks,
I recently purchased a NP 101 for doing some quicker viewing than with my CPC 1100 (Beast). 
I wanted to check out the ring nebula as I understood it was pretty easy to see even in semiurban skies.
So last night I had the fortune of clear skies and my neighboors lights off. 
I initially used my 13mm Ethos and picked it up as a hazy doughnut.
Went down to a 6mm Ethos and got a bigger hazy doughnut. 
So it wasn't as impressive as in the pics you see all over, but I was very pleased to have found it.
Also saw M31 and M33 together quite nicely in the 6mm. That was a treat!
Would using a filter bring out any more contrast and color?
Sean
You won't see much in the way of color in M57 with only 101mm of aperture, but a nebula filter may help the Ring stand out a little bit better than it does without a filter (especially at powers under 40x). Higher power will also help, as I have used 122x on the Ring in my 100mm f/6 refractor with fairly good results. Clear skies to you.
-------------------- David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
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mypontiac
Pooh-Bah
Reged: 09/06/07
Posts: 1080
Loc: Austin, Tx.
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So David,
I also have the CPC 1100. Sounds like this would be better for viewing M57?
Also, what filter would you recommend?
I currently don't have any specialty filters.
Thanks,
Sean
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David Knisely
Postmaster
   
Reged: 04/19/04
Posts: 8287
Loc: Beatrice, Nebraska
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Quote:
So David,
I also have the CPC 1100. Sounds like this would be better for viewing M57?
Also, what filter would you recommend?
I currently don't have any specialty filters.
Thanks,
Sean
For a "1-filter" purchase, I would recommend the DGM Optics NPB filter (in a 2" model, as you need a lot of field of view and lower power for proper nebula filter use). Also, the Lumicon OIII filter is good as well, but I like the view of the Ring just a tad better in the NPB than the OIII. At high power, filters may also not be necessary, as I rarely use one when viewing the ring at powers much over 200x. Clear skies to you.
-------------------- David W. Knisely
Hyde Memorial Observatory
http://www.hydeobservatory.info
Prairie Astronomy Club
http://www.prairieastronomyclub.org
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mypontiac
Pooh-Bah
Reged: 09/06/07
Posts: 1080
Loc: Austin, Tx.
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Thanks David!
One of my favorites is the Orion Nebula.
What power do you suggest and would the DGM or OIII be better for it?
Sean
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auriga
scholastic sledgehammer
Reged: 03/02/06
Posts: 795
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Quote:
Quote:
Hey Folks,
I recently purchased a NP 101 for doing some quicker viewing than with my CPC 1100 (Beast). 
I wanted to check out the ring nebula as I understood it was pretty easy to see even in semiurban skies.
So last night I had the fortune of clear skies and my neighboors lights off. 
I initially used my 13mm Ethos and picked it up as a hazy doughnut.
Went down to a 6mm Ethos and got a bigger hazy doughnut. 
So it wasn't as impressive as in the pics you see all over, but I was very pleased to have found it.
Also saw M31 and M33 together quite nicely in the 6mm. That was a treat!
Would using a filter bring out any more contrast and color?
Sean
You won't see much in the way of color in M57 with only 101mm of aperture, but a nebula filter may help the Ring stand out a little bit better than it does without a filter (especially at powers under 40x). Higher power will also help, as I have used 122x on the Ring in my 100mm f/6 refractor with fairly good results. Clear skies to you.
Sean, Just some thoughts stirred by your post:
Maybe M31 and M32 together in a 6mm?
M33 is pretty far away from M31 in our sky and ordinarily people find it hard to see although I usually find it easy. It is big and it's possible to skip right by it if you don't know what to look for. Use low power for M33. I don't think a filter will help with M33 since it is a galaxy, not a nebula. M33 does contain a huge emission nebula but I have not seen it; I think you would need really dark skies for that; David Knisely could tell you more accurately.
Enjoy your scopes, Bill
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JakeSaloranta
sage
Reged: 09/18/08
Posts: 237
Loc: Sisu, Sauna, Sibelius...
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NGC 604 is actually quite easy to spot even with small instruments. All it takes is to know where it is. The fairly small (2') size means people usually skip it while looking at M33. From my experience it looks like a little fuzzy star with low power.
Here's my sketch from 2004 with 8" Orion DSE @ 200x "Bright, ~1,5', slightly elliptical glow with brighter center. No stars resolved."
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mypontiac
Pooh-Bah
Reged: 09/06/07
Posts: 1080
Loc: Austin, Tx.
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Thanks Bill,
I get my # confused sometimes. 
Likely M110 in the view.
Sean
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ssmeding
journeyman
Reged: 07/13/09
Posts: 5
Loc: Utah USA
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The ring is real fun to look at I have a 12 inch dob. I have used a filter o2 filter and no filter great view at times both ways. Wait till you see the true green deep color It is worth the time. good luck have fun.
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GlennLeDrew
Pooh-Bah
   
Reged: 06/18/08
Posts: 1296
Loc: Ottawa, Ontario, Canada
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If one were forced to choose just one filter, I'd recommend a UHC or equivalent. Such a filter passes *both* the O-III line pair and the H-beta line. This allows to enhance the greatest number of nebulae possible.
Only the more highly-excited nebulae--especially supernova remnants and planetary nebulae--have visually dominant O-III emission. And even most of those have a certain amount of hydrogen emission, too. But a fair fraction of lower excitation nebulae emit little if any light from oxygen, meaning that H-beta dominates (again, visually). Famous examples include the California and IC434 (the glow against which the Horsehead dark nebula is silhouetted.)
While the narrowest-band filters (e.g., O-III and H-beta) deliver the highest contrast views, they must be considered as complementary and hence should *both* be part of your arsenal if the somewhat broader bandpass UHC-type filter is not. Otherwise the UHC is a quite viable one-filter solution.
-------------------- Home-made 11X50 right angle bino, 8.1 deg. FOV
Modified 26X100 bino, 3.5 deg. FOV
Home-made Mk II RA bino, using interchangeable objectives and eyepieces
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