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
Olivier Biot
Amused
Reged: 04/25/05
Loc: 51°N (Belgium)
|
Vixen ED100sf on a Vixen PortaMount
#3866579 - 06/15/10 03:32 PM
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Vixen ED100sf on a Vixen PortaMount
|
astroneil
Pooh-Bah
Reged: 07/28/09
Loc: res publica caledoniae
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: Olivier Biot]
#3866958 - 06/15/10 06:53 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Ging-Li (AKA Mathteacher),
I thoroughly enjoyed your review of the Vixen 100EDSF. Your assessment of this scope certainly rings true with my own experiences of this scope.
Thanks for sharing your thoughts on this instrument and some pretty pictures. Wishing you continued clear skies.
Best wishes,
Neil.
Neil.
|
Rat
professor emeritus
Reged: 10/13/06
Loc: USA
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: astroneil]
#3868061 - 06/16/10 10:31 AM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Nice writeup and review!
|
wprince
professor emeritus
Reged: 02/26/06
Loc: Atlanta, GA
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: Rat]
#3868119 - 06/16/10 11:04 AM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Yes a nice review. It parallels quite closely my experiences with my Skywatcher 100ED, although I rarely have dark enough skies for dim fuzzy DSO's.
|
Clive Gibbons
Mostly Harmless
Reged: 05/26/05
Loc: Oort Cloud
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: Olivier Biot]
#3868272 - 06/16/10 12:19 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Very good review, comprehensively written. 
The "faint purple halos" observation (even around Saturn) is puzzling. I never noticed that using a Sky-Watcher ED100.
If anything, the S-W was somewhat undercorrected in the red and one could see some ruddy coloration in the diffraction rings of very bright stars at extreme magnification.
But, mebbe my eyes aren't particularly sensitive to light in the blue-violet (getting old  ).
|
wprince
professor emeritus
Reged: 02/26/06
Loc: Atlanta, GA
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: Clive Gibbons]
#3868563 - 06/16/10 02:23 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Quote:
If anything, the S-W was somewhat undercorrected in the red and one could see some ruddy coloration in the diffraction rings of very bright stars at extreme magnification.
Clive, this is what I see in my Skywatcher 100ED, a minor tinge of red fringes on bright planets and stars. Following something you suggested, I use a prism diagonal which mutes the red fringes a bit. Star testing with my 3.2 TMB Planetary eyepiece, I see distinct although colorful diffraction rings on both sides of focus.
|
mathteacher
Carpal Tunnel
Reged: 05/13/07
Loc: Oakland, CA
|
Re: Vixen ED100sf on a Vixen PortaMount
[Re: wprince]
#3869177 - 06/16/10 07:20 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Thanks for your kind words, everyone.
Clive, I did not notice the purple halo in the beginning, but now I can definitely see it. Again, it is very faint to my eyes.
|
|
0 registered and 6 anonymous users are browsing this forum.
Moderator: droid, iceblaze
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 3236
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
