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Messages 119877 - 119906 of 119906   Oldest  |  < Older  |  Newer >  |  Newest
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119877 thad_floryan Offline Send Email May 23, 2012
9:46 pm
... Neat! Meade uses a 3-spring assembly for the LX200GPS/R/ACF family of OTAs, not sure about the LX600 and LX800 OTAs. A CAD diagram of the secondary...
119878 Ken Strauss
kstrauss7 Offline Send Email
May 23, 2012
9:48 pm
I frequently use Belleville washers in one of my other hobbies and they are extremely useful. I don’t mean to be negative but: The springs or washers need to...
119879 Worsel
bryancashion Offline Send Email
May 23, 2012
9:48 pm
Ken: a guess on my art, but I suspect that fiber optic will not work, since at the high mag needed for good collimation, the fiber optic end will look like a...
119880 L L
bugwubber Offline Send Email
May 24, 2012
12:04 am
Does a mask have to be round?  Or can it follow the arc of the corrector plate, be square or pie wedge? ... From: Dale M <lionsfan0_16@...> Subject: Re:...
119881 William Hamblen
wrhamblen Offline Send Email
May 24, 2012
12:15 am
It's better to be round. The results of diffraction are unpleasant when the aperture isn't round. Bud ... [Non-text portions of this message have been...
119882 Ken Strauss
kstrauss7 Offline Send Email
May 24, 2012
2:49 am
I haven’t yet tried but I’m surprised at your comment. Consider a 62.5 micron fibre (0.0000625 meter diameter) at a distance of 20 meters. Then asin(angle)...
119883 Ken Strauss
kstrauss7 Offline Send Email
May 24, 2012
2:52 am
Thanks for the link to the drawings! From: sct-user@yahoogroups.com [mailto:sct-user@yahoogroups.com] On Behalf Of thad_floryan Sent: Wednesday, May 23, 2012...
119884 Bob
greggmhill Offline Send Email
May 24, 2012
7:28 am
James, See Chris Peterson's suggestion about cross-drilling the knobs and inserting a hex key as a lever. Gregg...
119885 Bob
greggmhill Offline Send Email
May 24, 2012
7:33 am
Mine is quite tight, but not like stretched Saran Wrap over a bowl of food. It does not look stretched and distorted, just a lot tighter than pictures I see of...
119886 Bob
greggmhill Offline Send Email
May 24, 2012
7:33 am
You are correct in that the film should NOT be stretched when making a filter. I do not believe that it was tight when I bought the C8 filter, but that sucker...
119887 WILLIAM
willymac1... Offline Send Email
May 24, 2012
9:28 am
Has anyone given thought to using multiple off-axis Baader filters, ie in a triangular or cross formation? William...
119888 Edward Thomas
eftrat Offline Send Email
May 24, 2012
1:16 pm
Drew, Yes, the hand controllers from those mounts are interchangeable. Ed Thomas Deep Space Products www.deepspaceproducts.com...
119889 Rok Vidmar
rv13011244 Offline Send Email
May 24, 2012
2:43 pm
... Baader-Hartmann mask :) -- Regards, Rok...
119890 Daniel Chang
c91332003 Offline Send Email
May 24, 2012
3:20 pm
Hi,all SATURN 2012-05-23 20:51 HKT 12:51 UT   CM I 224.3° CM III 307.9° C 9.25 f/30 DBK21AF.04AS 1,800frames composite ...
119891 Worsel
bryancashion Offline Send Email
May 24, 2012
3:33 pm
Ken: But bigger than a star. I would not use a planet for collimation That said, it was a guess on my part!! Bryan...
119892 William Hamblen
wrhamblen Offline Send Email
May 24, 2012
4:43 pm
If you reflect the light source from a shiny sphere like a silver Christmas tree ornament, the apparent size of the reflection is smaller still. The diameter...
119893 Steve B
socialoutkast44 Offline Send Email
May 24, 2012
7:54 pm
A laser collimator CAN be used in a SCT but not in the normal way. I have a Hotech cross-hair collimator. The idea is to collimate the SCT using either a...
119894 Dale M
lionsfan0_16 Offline Send Email
May 24, 2012
9:13 pm
in the 3 yrs that I owned my 11" I have only had to collimate it 3 or 4 times and it has never been WAY off just a very tiny bit, so the image was never really...
119895 JohnS
johnschnupp Online Now Send Email
May 25, 2012
12:34 pm
Ken, I only had the secondary out once on my C8, that was when I replaced the philips head screws with allen/sockethead screws. I could be wrong but I am quit...
119896 JohnS
johnschnupp Online Now Send Email
May 25, 2012
12:34 pm
Thad, Some very nice drawings. There is no way that Meade would give up into like this. I take it you drew them yourself. I've worked +19 years as a field...
119897 James Cunningham
vikel Offline Send Email
May 25, 2012
12:42 pm
All of the handsets can work with any Celestron mount. You just have to download the right firmware for the handset. Jim James V. Cunningham ...
119898 Ken Strauss
kstrauss7 Offline Send Email
May 25, 2012
2:18 pm
I have an 8-inch Meade LX200 Classic (about 15 years old). I have not had the corrector out but I assumed that the design included springs. I could easily be...
119899 Daniel Chang
c91332003 Offline Send Email
May 25, 2012
10:00 pm
Hi,all SATURN 2012-05-25  21:33 HKT  13:33 UT  CM I 137.4° CM III 153.1° SCT C9.25 f/30 DBK21AF.04AS 1,600frames composite. ...
119900 thad_floryan Offline Send Email May 26, 2012
12:46 am
... That's odd: I thought Conrad Maloney's name was on every CAD PDF -- he's the guy who drew them 6 six years ago -- but I see now that it's not. He used to...
119901 chuck kimball
artistsloft4811 Offline Send Email
May 26, 2012
4:50 am
breaking in a bit, sorry, but Thad, did Conrad ever tackle the mount with his analyses? especially the dec bearing and shaft assembly? off line if you like...
119902 chuck kimball
artistsloft4811 Offline Send Email
May 26, 2012
4:54 am
oh never mind, sorry, I just found the index page ... duh, must be getting late.. chuck...
119903 James
vikel Offline Send Email
May 26, 2012
7:15 pm
I was just looking at the collimation screws on my scope and noticed that there was a crack on the outside of the secondary housing. The crack is toward the...
119904 P T Chambers
phil11111111 Offline Send Email
May 26, 2012
7:35 pm
Hi A quick review of what the design is. Your secondary housing is plastic. Collimation is achieved by "pivoting" the secondary by pulling the secondary...
119905 James
vikel Offline Send Email
12:55 am
I hope you are right that nothing is wrong. My scope is about two years old so its probably plastic. I was using Bob's Knobs when I set my collimation. I...
119906 P T Chambers
phil11111111 Offline Send Email
1:09 am
Hi I did not exactly say "nothing is wrong" but at least in my case it has not hurt the performance. I should mention that mine is an older starbrite C11 and...
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