My first reaction upon discovering the disparity between the quality of the SSAG images seen through the autoguider port, versus those obtained via the guide...
20903
pbbgr
Mar 1, 2010 5:28 pm
Hello, My Zenithstar 80mm suffered an unfortunate acciDENT! (Big one). I sent an email to WO about getting parts for repair, but haven't gotten a reply. Does...
20906
Timm B
timm_bottoni
Mar 1, 2010 8:07 pm
Hi Folks I am the only non-WO employee who volunteers to help moderate this FREE Yahoo group. When someone posts a message that is obviously worthless SPAM I...
20907
William Neboyskey
hibibby
Mar 1, 2010 8:59 pm
Sorry, Timm. I won't do it again!...
20908
Timm B
timm_bottoni
Mar 1, 2010 9:31 pm
Thanks - not a big deal really but it's been a long time since we had spammer problems, but they still sneak in from time to time by pretending to be WO users...
20909
Dave
cpc1100scoper
Mar 1, 2010 11:10 pm
Hi Tim... In regards to the above RMA... Looking for informatiom on status of repair to M110 front element- No response to e-mails.. Please advise?... Thanks...
20910
aissopou
Mar 2, 2010 4:22 pm
Very useful indeed, Thanks Tasos...
20911
lizzardmanuk@...
lizzardmanuk
Mar 2, 2010 9:14 pm
Just wondering if anyone had tested the Avian Starseeker 100mm against the williams Megrez90?...
20912
allanberzins
Mar 3, 2010 10:46 am
Hi, I have a 2" STC Crayford focuser dual speed 1:10 unit. I believe it is a mark 2 model. I have had a few problems with the tension being too slack. The...
20913
Timm B
timm_bottoni
Mar 3, 2010 9:35 pm
Hi, Can you post a picture showing the screws you are referring to? I have the newer model, the Linear Power focuser, but I think you might have the model...
20914
Dave Yates
cpc1100scoper
Mar 3, 2010 10:07 pm
If they are slotted they are the plastic set screws that hold the focuser to the mount ring...it controls tension on the ring. dave ... From: Timm B Sent:...
20915
allanberzins
Mar 4, 2010 7:32 am
Hi Timm, Have posted a picture. It's in the SCT Cryford directory. I've marked it with what I beleive to be the adjustments. The two I've maked tension ?? are...
20917
Timm B
timm_bottoni
Mar 4, 2010 10:09 pm
Hi - I see the pic in the Files section of the group. I think the small black one might be a hole designed to accept the WO Finder Bracket - it looks similar...
20918
Dave Y
cpc1100scoper
Mar 4, 2010 11:50 pm
Yes that's what they are for ..mounting dovetail attachments Dave From: Timm B Sent: Thursday, March 04, 2010 9:59 AM To: William-Optics@yahoogroups.com ...
20919
Dave
cpc1100scoper
Mar 5, 2010 4:41 pm
Hello All... Its decision time.. I have an SD66 Orange and a Black 66mm Petzval... I have to sell one... but here's the crutch I want to have a scope for...
20920
notgnirramot
Mar 6, 2010 6:15 pm
Here is a new photo of the Rosette Nebula taken Friday night. 1.5 hours, Modified Canon 350, through a W/O FLT 110 APO, more details are with the photo. ...
20921
sky2orion
Mar 6, 2010 10:00 pm
Hello all I am new to this group and I would introduce myself. I practice astronomy since the return of Comet Halley in 1986. I just bought a FLT-110 with an...
20922
pierluigi criscuoli
pierluigibiker
Mar 6, 2010 10:57 pm
hallo Claude  welcome in the group, I too have come into possession, a couple of months ago, of the last Megrez 90 and at the same time I joined this group. I...
20923
pierluigi criscuoli
pierluigibiker
Mar 6, 2010 11:12 pm
Hello Tom, what can I say ...... they are both very beautiful I was thinking to put it as my desktop background! Pierluigi ... Da: notgnirramot...
20924
Luis Diaz Santana
med_diaz00
Mar 6, 2010 11:54 pm
Hello Claude, and wellcome to the group, Luis ... De: sky2orion <sky2orion@...> Asunto: [William Optics] New member A: William-Optics@yahoogroups.com ...
20925
Subs
davidkinston
Mar 7, 2010 8:29 am
I own 2 WO telescopes - FLT110 and ZS80. Actually 3, with the 83mm spotting scope. Plus a collection of 1.25" and 2" EPs from 4mm to 40mm. I wanted to check...
20926
Astro Huyps
rhuyps
Mar 7, 2010 9:38 am
Hi David, the situation is different and more complicated; A good start is the Eyepiece calculator: http://www.davidpaulgreen.com/tec.html and similar from...
20927
Subs
davidkinston
Mar 7, 2010 10:32 am
hi ronald - thanks for responding. I'm pretty OK with calculating magnification, exit pupil, real/apparent FOV etc. My interest lies in how the EP uses the...
20928
Timm B
timm_bottoni
Mar 7, 2010 2:34 pm
Hi, Don't need to overthink eyepieces, light cones, etc - just use your eyes. What you see depends on things more than what you are trying to analyze...
20929
notgnirramot
Mar 7, 2010 5:07 pm
Pierluigi, Thanks for looking. Glad you like the photos. I uploaded another version processed to retain more detail in the nebula. Here is the link. ...
20930
Christopher
chris_jsa
Mar 7, 2010 5:37 pm
IMHO opinion the 66SD is the better of the two, it certianlly has less CA then Petzval, but you will need a FF/FR to get a flat field for AP. Clear Skies,...
20931
James Stephens
deltap_deltax
Mar 7, 2010 5:49 pm
Hello David, The magnification is the focal length of the objective (FL_Obj) divided by the focal length of the eyepiece (FL_EP), or m = FL_Obj/ FL_EP, as you...
20932
James Stephens
deltap_deltax
Mar 7, 2010 5:51 pm
Don't forget to look at the Sky & Telescope review of all three ZS-66 models! James Stephens, PhD 601-599-4260 (h) 29 Park Place #301 601-268-2681 ext. 40 (w)...
20933
pierluigi criscuoli
pierluigibiker
Mar 7, 2010 5:58 pm
Tom, the last photo is the best. like you say...more details. Pierluigi ... Da: notgnirramot <notgnirra@...> Oggetto: Re: R: [William Optics] New Photo -...
20934
James Stephens
deltap_deltax
Mar 7, 2010 6:01 pm
Another consideration is the eye. The magnification can be expressed as The Objective aperture divided by the exit pupil , m = FL/EP. So EP = FL/m, if m is...
