Re: More APPM Results -- Can Someone Help Me Understand This?


Ray Gralak
 

Hi Don,

USNO-B1.0 has been taken off line by USNO. The only way to use B 1.0 is if you have a local version on you
computer.
USNO B1.0 is over 80 GBytes, consuming too much bandwidth to download from the USNO website.

Unfortunately, that leaves A2.0 as the outdated alternative, so UCAC4 is the better choice now.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Don Anderson via groups.io
Sent: Thursday, April 22, 2021 2:08 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] More APPM Results -- Can Someone Help Me Understand This?

USNO-B1.0 has been taken off line by USNO. The only way to use B 1.0 is if you have a local version on you
computer.

Don Anderson


On Thursday, April 22, 2021, 01:32:49 p.m. MDT, Ray Gralak <iogroups@siriusimaging.com> wrote:


Ray i think that comment refers to USNO-SA2.0

USNO-SA2.0 is a subset of USNO-A2.0
Yes, that is true about SA2.0, but A2.0 has been superseded by USNO-B1.0.

-Ray

-----Original Message-----
From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of Brian Valente
Sent: Thursday, April 22, 2021 12:17 PM
To: main@ap-gto.groups.io
Subject: Re: [ap-gto] More APPM Results -- Can Someone Help Me Understand This?

Ray i think that comment refers to USNO-SA2.0

USNO-SA2.0 is a subset of USNO-A2.0


On Thu, Apr 22, 2021 at 12:13 PM Ray Gralak <iogroups@siriusimaging.com> wrote:


> For small fields of view with Pin Point, the USNO-A2.0 catalog is recommended by DC3 Dreams.

Bad information maybe?

According to the navy.mil website, USNO A2.0 is outdated:

https://www.usno.navy.mil/USNO/astrometry/information/catalog-info#usnoa2

-Ray



> -----Original Message-----
> From: main@ap-gto.groups.io [mailto:main@ap-gto.groups.io] On Behalf Of George
> Sent: Thursday, April 22, 2021 12:05 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] More APPM Results -- Can Someone Help Me Understand This?
>
> For small fields of view with Pin Point, the USNO-A2.0 catalog is recommended by DC3 Dreams.
>
>
>
> Regards,
>
>
>
> George
>
>
>
> George Whitney
>
> Astro-Physics, Inc.
>
> Phone: 815-222-6538 (direct line)
>
> Phone: 815-282-1513 (office)
>
> Email: george@astro-physics.com <mailto:george@astro-physics.com>
>
>
>
> From: main@ap-gto.groups.io <main@ap-gto.groups.io> On Behalf Of mjb87 via groups.io
> Sent: Thursday, April 22, 2021 1:49 PM
> To: main@ap-gto.groups.io
> Subject: Re: [ap-gto] More APPM Results -- Can Someone Help Me Understand This?
>
>
>
> BTW, I am using PinPoint and they do NOT recommend UCAV4.
>
>










--

Brian



Brian Valente
portfolio brianvalentephotography.com <http://brianvalentephotography.com>






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