Re: [guide-user] Re: Best OS to run GUIDE 8

P. Clay Sherrod Oct 28 2:45 PM

The given vs. the actual brightness of nearly all comets listed by MPC are never close.  Most will be dimmer (m2, nuclear magnitude if even that, typically even dimmer than the value at MPC); some of the comets listed as observable and, say as an example '15th magnitude', will not even be in the range of large telescopes equipped with CCDs, to less than magnitude 20.
There is a long period between actual observational data being reported to MPC and the updates of the comets list.  Not only that, but the calculations are using basic core data that, when all taken together, reveal that a certain comet "should" be at a certain magnitude.  Rarely do these match up.
The best thing to go by in terms of whether a comet is actually visible or not, is to compare what comets are visible (using Guide), or should be visible, and the "Last Observations...." of comets which is updated every morning by MPC at:
That latter list will give actual observed magnitudes of comets for the LAST reported observation, some only hours old.
Dr. Clay
Arkansas Sky Observatories
ASO Petit Jean Mountain /MPC H41
ASO Petit Jean Mountain South /MPC H45
ASO West Conway /MPC H43
.......serving astronomy since 1971
----- Original Message -----
From: stonedoffmyass@... [guide-user]
Sent: Wednesday, October 28, 2015 4:38 PM
Subject: [guide-user] Re: Best OS to run GUIDE 8

Thats a lot of input group!

Many responses . all appreciated.

Im getting a new CD/DVD ROM as that is part of issue . Seems picky where other machines will run the scuffed CD fine?

The only online use I have used the "GUIDE only" laptop is Minor Planet Center ,because the  button in GUIDE 8 to update automatically just locks up and beeps away.

So I am forced to go to MPC and get the soft02.cmt file and dump into the GUIDE cache and click it , usually the new comets can be seen.

Also the MPC Comet data seem to conflict with this data at
"Weekly Info about bright Comets"

If I c an find those Comets in GUIDE they usually show way dimmer that "Weekly info site"

A case of "Brightness to change without notice?"

Going to need a good used laptop now

Apparently Windows 7 is ok...
May look for a laptop loaded with Pro version.