From: Mark Gaffney <markgaffney@me.com>
Date: November 14, 2009 7:21:19 PM MST
To: Astro_IIDC@yahoogroups.com
Subject: Re: [Astro_IIDC] Re: ST3 Pro Exposure calculator...
Hi Perry,
I understand you obtained an iBook G4 at much the same time I did, I don`t know if it was from the same seller. The reason I`m writing is that mine came with a small 256 MB memory chip which was stopping me upgrading to Leopard besides being really slow. Milton heard about this & very kindly offered me 2 x 512 MB chips as he was upgrading his MacBook. I`ve installed one of these chips myself using the iFixit site for instructions (the link to this site was also provided by Milton!) & my memory has doubled up to 768 MB in tandem with the original 256 MB chip. I can`t use the 2nd 512 MB chip though from Milton & I was wondering if you could or would be interested in it. You can have it for free-it`d be my way of passing on the good will! I `d just have to get to a post office (which I don`t often do these days, having other family members pick up my parcels!) & have your address if you`re interested..
Mark.
On 15/11/2009, at 1:53 AM, H P wrote:
Hey to all,
I read this collection of posts with great interest.
As a result, I want to pose a question. I know the answer is fraught with the effect of many variables, including from the equipment used down to the skill and eyesight of the observer!
But please, don't dismiss it because of that. My intentions are quite honorable!! I have no reason to start a conflict here!
Milton, your tolerance would be most appreciated, since this question perhaps should be in the autoguiding group or the macastronomer group.
Just how well can one manually guide with an OAG, as compared to autoguiding with same,:
a) strictly manually, or
b) manually with software?
Let's limit exposures to 30 minutes or less and have FOVs similar of those in scopes with less than 7-800mm FL - no cassegrains, please.
I've almost stopped reading the posts on the Stark Labs group because of all the problems presented by the writers. Gawd, I've gotten so I don't want to open the daily digest. It's become a forum of gloom and despair not to mention a significant increase in the minutiae of technical details. As a neophyte to guiding, I'm not interested in those.
Aren't most of those from PHD users using PCs and not Macs??? Well, that's question number two. I've tried several times to get those posters to put either "PC" or "Mac" in their subject line but to no avail.
Well, I'm also venting a little here. Please excuse that. However, your input to the query would be most appreciated.
And thanks,
Perry
--- In Astro_IIDC@yahoogroups.com, Mark Gaffney <markgaffney@...> wrote:
>
> Terry,
> I do belong to the Stark group & because I have all my group settings
> unlimited I hear all the to & fros involved in Nebulosity & moreso,
> PHD! I don`t have a camera that is supported by Nebulosity or a DSLR
> though. Craterlet on the Stark site by the way`ll support your camera
> if only for imaging. Astro IIDC has a guiding interface which does
> what you`re describing to Ray with the crosshairs automatically, or
> PHD`ll do it for free on Macs & PC`s. Metaguide is a PC only app
> though! Good luck with your latest project, the star in Auriga!
>
> Mark.
> On 14/11/2009, at 3:11 PM, Terrence Redding wrote:
>
> > Very good.
> >
> >
> > I believe know Frank Mraz from the IOTA group and Stark Labs. I
> > would suggest listening to him. He is quite knowledgeable - with
> > years of experience - both things to value.
> >
> > Imaging is a side issue for me - something to relax and do between
> > other events. But it is great to share the experience with others
> > and to learn from those with decades of experience. It is an
> > amazing world we live in.
> >
> > Thanks for your comments.
> >
> > Terry
> >
...Getting back to OAG`s..there is a
> >> growing clique of people using these connected to the main scope to
> >> avoid flexure etc. issues associated with guide scopes (including
> >> Milton!)