... to ... 10". ... do ... Hi Phil, I own several Pentax XW's in the shorter focal lengths and have a 27mm Panoptic as my low power widefield, in addition to a...
... Assuming he can put up with only 11mm of eye relief. At 16mm, even the 27 Pan is a bit short of eye relief for many eyeglass wearers. -- Robert Bruce...
I just printed out the instructions for the Orion Lasermate Deluxe. I have the same unit but it came out any instructions. The Appendix section gives...
I have tried three different varieties of the "Black Out" flocking material available from Edmund Industrial Optics. I have the thinner, non-adhesive variety,...
... It will be visible, or I should say, will to a minscule degree obstuct part of the light-bearing side of your secondary. I elected not to dot my secondary...
... 22 a while back. I ended up selling it. Now, before the legions of Televue defenders rise up in defense of this eyepiece let me confirm it is a nice EP I...
Marking a spot on the Secondary is not good for 2 reasons: - As you suspect, the spot IS in the visible-image path. - Spotting the Secondary is absolutely not...
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skyquest-telescopes: Welcome and Introduction Page Revised October 2003 1. Introduction and Background The skyquest-telescopes forum was founded in...
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Hi Jim, I was at a star party recently and one of the vendors collimated my dob along with a few others using your tools. Everyone was impressed with the...
I will second that opinion. I currently use Jim's 2" collimating eyepiece and autocollimator. I use the red triangle with a small hole in the center. The...
Jack, thanks for your reply. Help me out here. In some posts, I read that the OTA must be exactly perpendicular to the bottom of the dobsonian base, without...
... to the bottom of the dobsonian base, without regard to "level." ... This is in fact true. Your OTA must be exactly perpendicular to the base when you send...
... It is the former. This is what is described in the instructions, and I have verified on many outings. I have used the scope quite out of level with no...
... The 22mm Pan is possibly the least liked eyepiece in the line (except for maybe the 15mm...). For a medium long focal length eyepiece its eye relief is...
... I'm not sure that A. They have historically always raised their pricing 3% per year, and B. That this is why their resale value is so good. I would state...
Hi Well, I want to thank everyone for the great responses. I thought I had made up my mind to go with the Pentax XW 30mm, but after being able to get a Pan 27...
... Dang Phil!!! =-) Seriously, that 27 Pan is a dandy - no two ways about that! But being a fellow Pentax driver (I've got 4) I was hoping someone would take...
I posted this same question yesterday and it seem to have gotten lost. If it popps up sorry. The mirror in my 10" Antares just does not seem very sharp. Star ...
... IF the focal ratios (4.6 vs 4.7) are exact, each of your eyepieces will focus one inch closer to the tube than it does now. Do you have enough in-travel...
Gene The Orion mirror is spected at 254mm diameter with a 1200mm focal length making it an f4.72 my mirror is spected at 250mm diameter with a 1200mm focal...
... The 254mm Orion mirror probably won't fit the cell for your 250mm mirror. -- Robert Bruce Thompson thompson@... http://www.ttgnet.com/thisweek.html...
If it fits, I don't think you'll have any problems at all. Because what counts is the focal distance (1200mm) and they are both the same. Ant ... From: Robert...
Robert, I think I have the room. There are three cork pads that look like they can be shaved or removed to make room for the new mirror. If not anyone have...
... It sounds like you have a standard Guan Sheng mirror and cell. If so, I think you'll find the 254mm Synta mirror won't fit. Although 4mm is only about 1/6...
Thanks Guys I got in touch with the dealer I bought ths scope from and he is gettng me the Antares mirror. Can't do anything under warranty because I have a...
... That's entirely bogus. If the mirror is as bad as you said, it should be replaced under warranty regardless of any small scratches or sleeks. Besides...
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