Well, it is that time of year that we celebrate our independence and get a chance to be with family/friends and enjoy the accomplishments of the past year. I...
Hi,I just bought a 14.5 Starmasters hybrid telescope and experiencing quite a bit of coma.I used mainly a televue 11mm nagler and 25mm plossl eye pieces.Should...
rozasj, Yes, you need a parracor for the kind of scope f/ratio you are dealing with. Jim ... From: <rozasj@...> To: <starmaster_scopes@yahoogroups.com> ...
Dear Joseph, A paracorr is a "required" option. At 4.3f, coma is a given effect, but is easily corrected with a TeleVue paracorr. Also, the weight balance of...
I've owned an 18" f/4.5 Starmaster for a little over a year, and it's my first big dob. Should I be using a paracorr? I have noticed that especially at higher...
All parabolic mirrors have coma as one of the optical abberations of the design. It is not a side effect of a poorly manufactured mirror. A perfectly made...
... But at higher power you magnify the coma. I used to think that coma increased "faster than linear" as you move away from the center of the FOV, so indeed...
Charlie Miller CTO, PBXcentral, Inc. 512-744-1510 You are correct. At higher power you are seeing the center of the FOV where coma is smaller but since you...
... center, that implies that it ... While the "rate of increase" is slower as you move away from the center, the amount of coma is still increasing. So, the...
Thanks so much.Joseph. ... Dear Joseph, A paracorr is a "required" option. At 4.3f, coma is a given effect, but is easily corrected with a TeleVue paracorr. ...
rozasj@...
Jul 7, 2009 3:50 pm
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Thanks.Joseph. ... If it increases at a declining rate as you move further from the center, that implies that it would be less noticeable at low power. -John ...
rozasj@...
Jul 7, 2009 3:50 pm
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Thanks.Joseph. ... rozasj, Yes, you need a parracor for the kind of scope f/ratio you are dealing with. Jim ... From: <rozasj@...> To:...
rozasj@...
Jul 7, 2009 3:50 pm
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Thanks so much.Joseph ... All parabolic mirrors have coma as one of the optical abberations of the design. It is not a side effect of a poorly manufactured...
rozasj@...
Jul 7, 2009 3:51 pm
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Hello Charlie, I haven't been online lately, however, I was at TSP with Rick's 22 and my 16.5FX 3.6 and the 28" F3.7, and I completely agree with your details....
A year ago, about, Jerry Merz sent me his plugin for Starry Night and the Sky Tracker. I finally (!) got around to trying this out this weekend - it worked...
Dear Al, Can you give a little more insight into what you have and what you're doing? I use Sky Tools 3 and am interested in using it to drive my SM 14.5", but...
Hi Joe - Sorry if I wasn't more clear in my message... I was a Beta Tester for ST3, and tried to bug Greg enough to write the driver for the Sky Tracker...
Thanks, Al, for the update and information. I've been a member of the Starmaster/Yahoo group for several years, but don't usually comment unless I can really...
Hi all I just talked with Rick a couple of days ago and asked the same old question about Sky Tools. I was also a beta tester for v3. Rick is very frustrated...
After getting a chance to view through the new 22" f/3.3 Starmaster at TSP 2009, I can say that scope is now under consideration for my dark sky site....
Charlie, Just for grins, I've forwarded your post to Greg@skyhound (Sky tools 3). I said that it was just for his information and thought he might find it ...
Dear All, I received a response from Greg at Skyhound (Sky tools) and am sharing it below. I would appreciate it if this email could be shared with Rick and,...
I agree with Greg Crinklaw (SkyTools) that it is primarily the telescope vendor's responsibility to provide an ASCOM driver for their products so their scopes...
A photo of Rick with the first 30" F/3.3 scope is now on the front page: http://www.starmastertelescopes.com/ I would dare say it's a conveniently-sized...
... Unfortunately it's not that easy. My computer skills are limited to "basic BASIC", but I've written a few small programs for an LX200, so I thought I'd...
... That's Bill Gray/Project Pluto: <http://www.projectpluto.com/> ... I don't think the SkyTracker is made by the same person who makes Sky Commander. And...
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