[AZ-Observing] Re: Uranometria 2.0
- From: Tom Polakis <tpolakis@xxxxxxx>
- To: az-observing@xxxxxxxxxxxxx
- Date: Wed, 29 Apr 2009 18:58:49 -0400
---- L Knauth <Knauth@xxxxxxx> wrote:
> Here is the dream: For each NGC object, not only the page number in U2,
> but an index as to where you can quickly find it on the page. For
> example: (like locations on old geographic surveys): p. 67, SW1/4;
> NE1/4, SE 1/4. This means, "Go to page 67; look in the southwest 1/4 of
> the northeast 1/4 of the southeast 1/4 of the page". Bingo; no having
> to look up RA, Dec to find on the page.
I'm sure Paul already knows this, but the NGC catalog numbers are in order of
increasing R.A. If the NGC number is larger, look to the left (east) on the
chart; if it's smaller, look to the right (west). Of course you still have to
scan the chart up and down in declination to find it. For example, if you're
on a chart that shows NGC 4384, and you want to go to NGC 4486, it will be
along a strip of R.A. to the left (east) of it on the chart.
I know... NGC 1 is to the left of NGC 7840. There are always exceptions.
Tom
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