skyquest-telescopes: Welcome and Introduction Page Revised October 2003 1. Introduction and Background The skyquest-telescopes forum was founded in...
skyquest-telescopes@y...
Sep 1, 2007 10:27 am
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Forum Rules This message, like the "Welcome Message", is sent automatically to new forum members, as well as being sent out automatically each month. The...
skyquest-telescopes@y...
Sep 1, 2007 10:27 am
37051
In a recent post, a question was posed whether it is normal to see the spider vanes reflection off center through the collimation cap. The correct answer was...
Hi All, I would like to know how severe is the coma in an XT10i. Is a paracorr a must at f/4.7? How dependant is the amount of coma on the quality of EP used?...
November ... I use my 13mm and 9mm Naglers with my XT10. Not really much of a coma except at the very edge. With 82 FOV, I can tolerate some imperfection ...
... Hi Jason, How do the Naglers perform without Barlow.?? Is the performance as good?? I have read that this scope is really picky about the EP's used with...
Sabir, What I meant to say with my "broken" sentence is that Naglers perform well with and without barlows. I have never looked through a Hyperion so I can't...
Cheaper the eye piece the more pronounced the coma! I tried an inexpensive 30mm 80 degree eyepiece and felt like I was on the Starship Enterprise going into...
In the range of a 12mm to 13mm focal length, coma should be negligible in any decent eyepiece. My experience is that it's only when you get into the longer...
... negligible in any decent eyepiece. ... Jack - Any chance I can get you to say a few words about coma being related only to the parabolic primary while...
The most important jist of this email is that edge performance in our telescopes is not often really a problem of coma. ... Well this all depends on how...
From: "Gene Baraff" <g2baraff@...> ... coma being related only to the parabolic primary while eyepiece astigmatism and eyepiece field of view come into...
Adding to what has already been said, I'll add a personal experience of my own. About 25 years ago I had a 26mm Konig eyepiece that I regularly used with an 8"...
In a word, yes. All you are doing with it is to insure that when the cor askes you to point the scope vertical that it is perpindicular to the horizontal axis....
Hi - I've had my XT8 Intelliscope for about a month now, so still just getting used to things. I've bought a few new eyepieces in addition to the ones...
Brian, To solve the problem (or at least improve the situation), you need to take few actions to pull-in the focal plane towards the OTA: 1- Ensure the primary...
... Hi Brian, unfortunately this is a pretty common issue as our scopes have a pretty limited focus range. I'm curious what the new eyepieces you purchased...
Clay, 19 inches. Cedric. _nn_._,_.___ Messages in this topic (1) Reply (via web post) | Start a new topic Messages | Files | Photos | Database | Members |...
I have an XT8 with a 9 x 50 RACI finder and I am thinking of getting a Rigel Quikfinder. Where would be the best position to mount it? There is no room on the...
From: "Jason" <jasonx007@...> ... one of the primary collimation knobs needs to be tightened all the way down. Most likely, it will be the one closet...
... I have one eyepiece that has this problem (2" GSO Superview 32mm). I just tighten the screw with the eyepiece out a bit. John Wunderlin Mineral Point, Wi ...
Jack, when you pull the mirror all the way back to the bottom, you can't have all 3 knobs tightened all the way down since the primary has to be slightly...
... a ... I put a telrad on my XT8 between the focuser and the RACI. No mods were necessary, I just put it where it would fit. Directly behind but in between...
... You should be able to use both, and there is no reason you should have to dril into your tube and move your RACI to a new location. Have a look in our...
From: "Jason" <jasonx007@...> ... can't have all 3 knobs tightened all the way down since the primary has to be slightly tilted towards the focuser. ...
Jack, most of us tilt our primaries towards the focuser without even knowing it. Therefore, the knob closest to the primary tend to be the lowest one. Refer to...
I took my XT8 out into the backyard last night and committed myself to trying to find a few deep-sky objects. I've had the scope a few weeks and thus far have...
... You are talking about Picture #20, "Partial Offset" in the Photo Album #50 ("Jason" by Jason XT10) in our "Photos" section. If I understand that diagram...
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