I purchased a Megrez II and the first couple nights I had it out I noticed a strange star test, but those peeks were quick. Last night the sky was great and I...
2713
Harry Lewin
hml10463
Aug 9, 2004 8:28 pm
Chris, Something sounds seriously wrong with the scope. Did you check your diagonal? I haven't gotten to see and stars yet, NYC residents need about 3 months...
2714
james ungehajer
jamesungehajer
Aug 9, 2004 9:58 pm
hi,did you receive my e-mail from august 6th,still waiting on when the sct dielectric diagonals will be coated and ready for shipment.april-may-june -july...
2715
no_names_remain99
no_names_rem...
Aug 10, 2004 12:35 am
Harry Thanks for the reply:) We tried a different diag. of know quality and the results were the same. I contacted my dealer this morning and they took my star...
2716
zangwenxuan
Aug 10, 2004 3:41 am
Dear Sirs in william optics, I read from other BBS that some other people had purchased the "ED triplet APO 80mm f7.5" lens only from your company. Is it...
2717
spacephotographer
spacephotogr...
Aug 11, 2004 2:57 am
How come a new telescope is discontinued? It has just been introduced 3 months ago and now is gone? I just bought mine 2 weeks ago and the dealer did not...
2718
Harry Lewin
hml10463
Aug 11, 2004 5:06 am
My 2" WO diagonal arrived today. The problems I noted previously with some of my ep not being able to come to focus with my 1.25 diagonal disappeared with the...
2719
williamoptics2004
williamoptic...
Aug 11, 2004 5:51 am
Dear Alberto, The Megrez 80ll did not discontinued, it still available for the market. The new ED triplrt is a differwent class of Megrez 80 ll, we have total...
2720
earclean2000
Aug 11, 2004 6:04 am
Dear william, I have noticed web-updates (astronomics and anarcortes) on the pre-order of the new ED triplet. The description is not clear that what is...
2721
williamoptics2004
williamoptic...
Aug 11, 2004 8:03 am
Hi Bryan, The $800 package is includes 80 ED triplet F/7 OTA, backpack , 2" crayford focuser, retractable dewshield, aluminum lens cover,1.25" adapter and 2"...
2722
no_names_remain99
no_names_rem...
Aug 11, 2004 11:38 pm
William, Here in Canada we're being told the semi-apo is discontinued. You may want to clearify this with some dealers :) -Chris ... I ... new ... compete ... ...
2723
earclean2000
Aug 12, 2004 3:47 am
Dear William, How's the color & other optical correction of the new 80II ED Triplet? For example, compare to a well known doublets such as Televue 85? Bryan...
2724
williamoptics2004
williamoptic...
Aug 12, 2004 1:47 pm
Hi Bryan, The color correction at 100X is quite good (with one Schott FK-ED element in center), but is not as good as Megrez 80 fluorite triplet APO, I don't...
2725
Joe Cipriano
jciprir1100s
Aug 12, 2004 5:14 pm
For anyone interested, here's a link to the Schott lens element designations: <<http://astro.umsystem.edu/atm/ARCHIVES/FEB98/msg00483.html>> Interesting - the...
2726
Jonathan M Davidson
azurelapiz
Aug 12, 2004 10:30 pm
... That is Fluorocrown glass, which is as far as I know glass (mainly non-crystaline silicon dioxide) doped with fluorine; which is optically a long way from...
2727
Harry Lewin
hml10463
Aug 13, 2004 5:12 am
I'm looking for a 1.25" eye piece that will give me about a 3 degree real FOV. Say something with a Focal length of 18 or 19 mm. The 32mm Nagler Plossl is...
2728
Joe Cipriano
jciprir1100s
Aug 13, 2004 5:52 am
Agreed. Even "doping" the glass with Flourine should help reduce CA to some extent, I would imagine. My knowledge of optical science is between slim and none. ...
2729
no_names_remain99
no_names_rem...
Aug 13, 2004 11:57 am
Harry- We need to know which instrument you are using, the focal length etc. This too is a dream of mine but there are few eyepieces 18- 19 max field category....
2730
no_names_remain99
no_names_rem...
Aug 14, 2004 1:49 pm
I spoke to Williams Optics on the phone yesterday and they informed me that the Megrez II is still available in most locations. In Canada we can order the new...
2731
no_names_remain99
no_names_rem...
Aug 14, 2004 2:07 pm
Thought I'd close off this thread too. I spoke to Williams yesterday and they have worked out a solution to my problem. I should have called them before my...
2732
Harry Lewin
hml10463
Aug 15, 2004 5:39 am
Sorry Chris, I was referring to my MegrezII f6.25. Yes, what eyepieces have a 27mm or so field stop at a reasonable focal length, with good performance at a...
2733
cristiantaby
Aug 16, 2004 6:32 am
The "obscure German camera company" with reputation for the highest quality cameras is from Sweden. http://www.hasselblad.se/ Brgs Cristian Sjoqvist Taby,...
2734
no_names_remain99
no_names_rem...
Aug 16, 2004 8:24 am
Harry- That's ok, the reason why I ask is that the field depends on focal length of the scope. That's a good reason to have a 1.25 option :) I plan to travel...
2735
no_names_remain99
no_names_rem...
Aug 16, 2004 8:45 am
Liu- I am in the process of this upgrade. But I'm now concerned that inserting a 2-inch extension tube will limit the field and cause some distortion. I have a...
2736
Joe Cipriano
jciprir1100s
Aug 17, 2004 2:32 am
You're correct. My mistake. ... CA ... is ... glass ... optical ... flouride). ... but ... obviously...
2737
biuliuming
Aug 17, 2004 2:34 am
Dear Chris, I think you are right. I am also having this concern. Before I got the new lens, I was thinking of DIY one extention tube that can be used in front...
2738
jgf3
jgfusco3
Aug 17, 2004 5:02 am
Hello, Glass gets traded like stock. Broken blocks of this stuff and goes from ohara to schott to Hoya and so on.When I was in the process finding a piece of...
2739
cristiantaby
Aug 17, 2004 7:01 am
No problem, this is not easy to know. I also know this is of topic a bit but since we all are astronomers: The Hasselblad cameras with Zeiss lenses have been...
2740
no_names_remain99
no_names_rem...
Aug 18, 2004 7:12 am
Liu- That's great to hear :) I wrote William and he also confirmed that there was no vignetting. I'm really looking forward to this new/improved scope. The 5...
2741
biuliuming
Aug 19, 2004 3:59 am
Well, let me say something about UO 40 MK70. First of all, you need to use 2" star diagonal to get good results, 2" erecting prism may not provide enough...
