Re: Observing order, chart binning, and azimuth order

From: Gary Manning (glm1157@No-Spam)
Date: Thu Jan 29 2004 - 23:50:40 MST

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    Hi Rashad,

    A few of us in Tac-Sac picked up SkyTools 2. We're all novices, maybe
    you could give us a few pointers at SSP.

    Thanks,

    --Gary

    On Thu, 2004-01-29 at 18:39, Rashad Al-Mansour wrote:
    > Hi Marek,
    >
    > Skytools will sort in Alt./Az. You can sort by page number of many printed
    > Atlases, rise and set time, you can even sort by optimum viewing time! I
    > like this program allot, as a matter of fact I'm going to remove most of the
    > astronomical software I have on my laptop.
    >
    > I will keep Skytools 2.0, MegaStar 5.0 and for sentimental reasons TheSky
    > 5.0, I'm dumping SkyMap Pro, Cartes du Ciel, StarryNight Pro and 2 or 3
    > others. That should clear out about 2 gigabyte of disk space. :-)
    >
    > Next time we're out observing stop by my spot and I'll let you check it out.
    >
    > Rashad
    >
    >
    > ----- Original Message -----
    > From: "Marek Cichanski" <marekc@No-Spam>
    > To: <sf-bay-tac@No-Spam>
    > Sent: Thursday, January 29, 2004 1:00 PM
    > Subject: [TAC] Observing order, chart binning, and azimuth order
    >
    >
    > > I've found the recent thread about sorting one's observing list to be
    > pretty interesting. I've tangled with this a little bit myself.
    > >
    > > Bob and Mark have pointed out ways of approaching this that work fairly
    > well for them. Sorting by RA, Dec, or constellation are straightforward
    > algorithms, and they've had good luck with these methods.
    > >
    > > Matthew pointed out that there are 'traveling salesman' algorithms that
    > might be applied, to do things like minimize hop distances. Turns out that
    > astro planning software makes use of this. I use NGCView, which has its own
    > proprietary "Observing Order" algorithm. I believe that SkyTools has
    > something like this, too; Rashad might have some experience with this.
    > >
    > > I haven't tested the usefulness of NGCView's 'Observing Order' yet, but it
    > mostly seems to make sense. It does create a few weird, long hops from time
    > to time, though. One other nice NGCView feature is "binning". You can create
    > an observing list, sort it by 'Observing Order', and then bin it by SA2000
    > page or Uranometria page. This is pretty handy. I did this at Shingletown
    > last year, and it was pretty helpful.
    > >
    > > What I would really like to see is an "Azimuth Order" algorithm. Why?
    > Because I look at DSOs with a dob. The big pain the neck for me is making
    > changes in azimuth. Moving my Denver chair and accessory cart is a pain.
    > Altitude changes are less of a big deal when I'm using my dob, especially if
    > I exclude stuff above about 50 degrees altitude. I'd love to be able to sort
    > the list so that I only make azimuth changes in one direction as I work
    > through the list. Of course, other factors come in to play, such as the time
    > taken on each object, the time of night, and whether or not I take breaks
    > while working the list. Mark's approach of sorting an RA window by
    > declination is probably a pretty close approximation to the solution I'm
    > looking for.
    > >
    > > I swear, I think I like this part of observing better than the observing
    > itself - the "ergonomics" of it. I always want to know how I can make the
    > process as easy and efficient as possible, so as to maximize time and energy
    > spent looking at the object, and/or searching and destroying. I would call
    > my approach to observing "Stop and smell the roses while engaged in your
    > search and destroy mission." (Maybe just call it 'search and destroy the
    > roses'? Hmm, that sounds a little brutal to me...)
    > >
    > > Marek
    >



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