Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

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

Observing >> Deep Sky Observing

Pages: 1 | 2 | (show all)
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
would a 4.25f/10 reflector show globulars easi new
      #4873344 - 10/21/11 08:45 PM

would the 4.25f/10 reflector show most of the globular clusters in the messier list as mostly resolved? dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
simpleisbetter
Carpal Tunnel
*****

Reged: 04/18/11

Re: would a 4.25f/10 reflector show globulars easi new [Re: DJD57]
      #4873369 - 10/21/11 08:55 PM

Not exactly. I use a 4" ED refractor and not all the globulars resolve, and whether they resolve or not is dependent more on your transparency and seeing for a given night than on the aperture once you get down to these smaller sizes. But IF this scope you want has good optics (have you checked it yet?) then it's certainly a good way to challenge yourself, trying to push yourself and your observing skills to see more and get better.

I have to agree with almost all the other posters in your other threads on this, that you'll be better off with something like a Synta 4" f/9 ED or even the SVP 120 achromat refractor on the stable and proven SVP mount, or an Orion 4.5" or 6" Skyquest dob than the Edmund. I fear you would be unhappy with it and regret it Dale.


Post Extras: Print Post   Remind Me!   Notify Moderator  
star drop
contra contrail
*****

Reged: 02/02/08

Loc: Snow Plop, WNY
Re: would a 4.25f/10 reflector show globulars easi new [Re: DJD57]
      #4873442 - 10/21/11 09:49 PM

Quote:

would the 4.25f/10 reflector show most of the globular clusters in the messier list as mostly resolved? dale



No.


Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: simpleisbetter]
      #4873505 - 10/21/11 10:38 PM

i will see first and check it out dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
blb
Post Laureate


Reged: 11/25/05

Loc: Piedmont NC
Re: would a 4.25f/10 reflector show globulars easi new [Re: star drop]
      #4873578 - 10/21/11 11:28 PM

Quote:

Quote:

would the 4.25f/10 reflector show most of the globular clusters in the messier list as mostly resolved? dale



No.




The answer is NO! At high power many Of the Messier globular clusters show some stars around the edge with averted vision and some clusters look a little grainy but none are fully resolved. You will need an 8" to 10" to start seeing many stars from a dark site, and they still are not fully resolved.


Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: blb]
      #4873601 - 10/21/11 11:41 PM

ok thanks i guess i stick with the moon and planets only with the 4.25 scope dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
BoriSpider
Carpal Tunnel


Reged: 08/10/04

Loc: S.W.FLA
Re: would a 4.25f/10 reflector show globulars easi new [Re: DJD57]
      #4874046 - 10/22/11 10:00 AM

There is a lot more to see than Moon and planets with
a 4" scope. Don't give up.


Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: BoriSpider]
      #4874062 - 10/22/11 10:10 AM

ok doube stars and Tell me what else is good in this scope? dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
blb
Post Laureate


Reged: 11/25/05

Loc: Piedmont NC
Re: would a 4.25f/10 reflector show globulars easi new [Re: DJD57]
      #4874253 - 10/22/11 11:42 AM

Quote:

ok doube stars and Tell me what else is good in this scope? dale




Anything you won't to look at. Some things look better with a larger scope but you can see about anything you like with a 4" scope.

I can't get over the fact that you say you have been doing this for 35 years and still ask questions like this.


Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: blb]
      #4874293 - 10/22/11 12:01 PM

I have never had a 4inch relfector i have had a 6inch and nothing smaller than a 6inch so this could be a disappointing scope? dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
star drop
contra contrail
*****

Reged: 02/02/08

Loc: Snow Plop, WNY
Re: would a 4.25f/10 reflector show globulars easi new [Re: DJD57]
      #4874358 - 10/22/11 12:31 PM

I basically started out with an Astroscan (4.25" reflector) and I would not describe the views as disappointing. Dale, do you still have a telescope or binoculars?

Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: star drop]
      #4874428 - 10/22/11 01:10 PM

I Got a c-8 and a discovery 10f/6 Pdhq relfector dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
David Knisely
Postmaster
*****

Reged: 04/19/04

Loc: southeastern Nebraska
Re: would a 4.25f/10 reflector show globulars easi [Re: DJD57]
      #4874434 - 10/22/11 01:12 PM

Quote:

would the 4.25f/10 reflector show most of the globular clusters in the messier list as mostly resolved? dale




It can show many stars in the brighter Messier globulars but won't make them mostly resolved. M22 will show many stars in its outer haze, although in a 4.25 inch aperture, the core may still look a little hazy. Another easy Messier globular is M4, which will show a hazy bar across the middle of the cluster as well as many stars in the outer haze (although again, not well resolved). To get better resolution, you may need an aperture in the six to eight inch range or larger. Clear skies to you.


Post Extras: Print Post   Remind Me!   Notify Moderator  
azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: David Knisely]
      #4874844 - 10/22/11 06:57 PM

No. M13 is partial with a dozen stars gimmering in and out and sometimes none. M15 showed marginal periphery res of a half dozen stars. Thete is utterly NO comparison between that scope and a 4" apo. Truth be told, my 70mm achro shows fainter stars than that scope ever did and under lesser skys. It is closer to a 60mm refractor on light gathering power as the coatings are poor.

Pete


Post Extras: Print Post   Remind Me!   Notify Moderator  
Matt2003
Post Laureate


Reged: 04/22/10

Re: would a 4.25f/10 reflector show globulars easi new [Re: azure1961p]
      #4874877 - 10/22/11 07:31 PM


It might be Dale, but the again...
All the experience I've gained in the last 15 or 16 months (mostly since coming to CN! )has taught me how to see more with smaller instruments than my 8inch Dob. Getting great views of stuff like the Veil Nebula & the North America Nebula in a pair of 50mm Binos rocked! LOL

Clear Skies,
Matt


Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: David Knisely]
      #4874918 - 10/22/11 08:08 PM

THANKS DAVID dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi new [Re: azure1961p]
      #4874921 - 10/22/11 08:09 PM

that does not sound good at all? dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
DJD57
Post Laureate
*****

Reged: 09/07/09

Loc: NORCO,LA. USA
Re: would a 4.25f/10 reflector show globulars easi [Re: Matt2003]
      #4874924 - 10/22/11 08:10 PM

yes the north american nebula is nice in my 20x80mm binos too dale

Post Extras: Print Post   Remind Me!   Notify Moderator  
azure1961p
Postmaster
*****

Reged: 01/17/09

Loc: USA
Re: would a 4.25f/10 reflector show globulars easi [Re: DJD57]
      #4875430 - 10/23/11 07:52 AM

A fringey aperture where a scope shows a reasonable comparison of m13 to its photos is had with 6". At eight inches and over its better than its pics. Inthe four inch range its still captivating but with far fewer stars and a lot of unresolved stellar haze.

Pete


Post Extras: Print Post   Remind Me!   Notify Moderator  
JIMZ7
Pooh-Bah
*****

Reged: 10/22/05

Loc: S.E.Michigan near DTW
Re: would a 4.25f/10 reflector show globulars easi [Re: DJD57]
      #4875575 - 10/23/11 09:51 AM

Stick with your 8" & 10" scopes for globulars. Only M-13,M-22,M-3,M-4,M-5,M-92 will be worth the try resolving in a 4.25" reflector at higher powers,but again why go "smaller" on these objects when you got "bigger"!

Jim
-----------
Antares 105mm x 660mm fl
SkyWatcher EQ-2
U.O. 24mm Konig-1 flat-top Zebra
Monolta 10x50mm WA


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1 | 2 | (show all)


Extra information
5 registered and 9 anonymous users are browsing this forum.

Moderator:  Dave Mitsky, Phillip Creed, okieav8r 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1787

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics