Go Back   IceInSpace > Equipment > Eyepieces, Barlows and Filters
Register FAQ Calendar Today's Posts Search

Reply
 
Thread Tools Rate Thread
  #21  
Old 14-02-2016, 07:28 PM
bytor666
Cygnus X-1

bytor666 is offline
 
Join Date: Dec 2004
Posts: 366
Quote:
Originally Posted by bigjoe View Post

I think Bill stated clearly, that the field in the 4.5mm Morpheus "was entirely acceptable without paracorr" in the fast dob.

I myself would NEVER even think of using even my Deloi ,Naglers, Orthos etc without a paracorr/ coma corrector in a fast dob as some of them are left wanting without one; this is what I think Bill is implying here; that you are going to use a coma corrector like just about everyone else in this situation.

Bill, as has Don Pensack, have given what I believe from personal experience, to be correct and honest reviews, with no brand pushing, and as he states it's a "personal " thing.

bigjoe.
A Paracorr is not needed once you get to higher powers.....especially for the ones I have picked. In fact, I have wisely chosen my eyepieces, so that one isn't needed. Yes, I am aware what a Paracorr / Coma Corrector does, and I have used both before myself.....But I choose NOT to use one, as I don't want extra glass to fiddle with.

22mm LVW
10mm Pentax XW
7mm Pentax XW
5mm Pentax XW

I also had a 34mm Meade 5000 SWA which was fine without a Paracorr, but I am also aware that a paracorr does clean up coma which comes from the mirror, especially in longer FL eyepieces. I've been studying and practicing Astronomy for over 30 years.

Quote:
"Comparing the off-axis performance of the Morpheus to the Pentax XWs, the Morpheus performed as well in all corresponding focal lengths using the XT10 with Paracorr, the SCT, and the refractors, except for the 14mm focal length where the Morpheus did a better job than the XW"
These comments ABOVE mentioned a Paracorr....not without, which I just wanted to ask about.

And what is THIS below all about?????

Quote:
I myself would NEVER even think of using even my Deloi ,Naglers, Orthos etc without a paracorr/ coma corrector in a fast dob as some of them are left wanting without one; this is what I think Bill is implying here; that you are going to use a coma corrector like just about everyone else in this situation
.

WRONG.

"Everybody" does not use a CC as you try to imply here. Sorry.

Last edited by bytor666; 14-02-2016 at 07:39 PM.
Reply With Quote
  #22  
Old 14-02-2016, 08:10 PM
bigjoe (JOSEPH)
Registered User

bigjoe is offline
 
Join Date: Nov 2010
Location: sydney
Posts: 1,363
Quote:
Originally Posted by bytor666 View Post
A Paracorr is not needed once you get to higher powers.....especially for the ones I have picked. In fact, I have wisely chosen my eyepieces, so that one isn't needed. Yes, I am aware what a Paracorr / Coma Corrector does, and I have used both before myself.....But I choose NOT to use one, as I don't want extra glass to fiddle with.

22mm LVW
10mm Pentax XW
7mm Pentax XW
5mm Pentax XW

I also had a 34mm Meade 5000 SWA which was fine without a Paracorr, but I am also aware that a paracorr does clean up coma which comes from the mirror, especially in longer FL eyepieces. I've been studying and practicing Astronomy for over 30 years.



These comments ABOVE mentioned a Paracorr....not without, which I just wanted to ask about.

And what is THIS below all about?????

.

WRONG.

"Everybody" does not use a CC as you try to imply here. Sorry.

WRONG!!!

"Like JUST ABOUT everyone else" .

NOT IMPLIED-STATED!!

PS: Have no further interest in this discussion


Cheers bigjoe.
Reply With Quote
  #23  
Old 15-02-2016, 06:59 AM
bytor666
Cygnus X-1

bytor666 is offline
 
Join Date: Dec 2004
Posts: 366
Quote:
Originally Posted by bigjoe View Post
WRONG!!!

"Like JUST ABOUT everyone else" .

NOT IMPLIED-STATED!!

PS: Have no further interest in this discussion


Cheers bigjoe.
Not implied - stated?

Yes, it is stated ONLY because you said so.....not because there is PROOF that everybody uses a CC / paracorr. Everybody does NOT use one with a short FL scope.

END OF.

Last edited by bytor666; 15-02-2016 at 06:20 PM.
Reply With Quote
  #24  
Old 15-02-2016, 04:32 PM
skies2clear
Registered User

skies2clear is offline
 
Join Date: Oct 2006
Location: Adelaide, South Australia
Posts: 238
I have a Paracorr, but don't use it that often. I'm treading on thin ice saying this, but despite what the Paracorr does well, I still see some negative aspects because of the "extra glass". But that's me.

I know there are lots who leave it permanently in their focusser and that's good by me too
Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 04:35 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement