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List:       kstars-devel
Subject:    Re: NGC Thumbnails
From:       Jasem Mutlaq <mutlaqja () ikarustech ! com>
Date:       2017-04-15 10:03:29
Message-ID: CAE0bU5m6_wPd8pPPuo=S4Wo=2P6gqEud3Vq5+FwmsWRShWV2dQ () mail ! gmail ! com
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I'm attaching a few examples so you can see why we can't use them as is in
KStars.

On Sat, Apr 15, 2017 at 9:43 AM, Akarsh Simha <akarshsimha@gmail.com> wrote:

> Hi
>
> This is something very nice to have!
>
> A caveat to consider is the licensing for DSS imagery. They are not
> available for commercial use, so we must ship this as an add-on through
> KNewStuff ("Get New Data")
>
> Other sources of images are SDSS, the Hubble Legacy Archive (hla.stsci.edu)
> and the recently released PanStarrs 1 survey. I think the PanStarrs 1
> survey has a large sky coverage (possibly even all sky -- I haven't
> checked). SDSS has a somewhat small footprint, and the Hubble only has
> objects of interest.
>
> I didn't quite get what the problem involved is. The DSS is made from
> digitizing scanned plates mostly from the Palomar Observatory and UKSTU
> telescope. The result is that many plates have artefacts, and they are
> completely uncalibrated. Planetary nebulae and bright emission nebulae tend
> to be overexposed. There is no way around these problems other than going
> to other surveys.
>
> Regards
> Akarsh
>
>


-- 
Best Regards,
Jasem Mutlaq

[Attachment #5 (text/html)]

<div dir="ltr">I&#39;m attaching a few examples so you can see why we can&#39;t use \
them as is in KStars.</div><div class="gmail_extra"><br><div class="gmail_quote">On \
Sat, Apr 15, 2017 at 9:43 AM, Akarsh Simha <span dir="ltr">&lt;<a \
href="mailto:akarshsimha@gmail.com" \
target="_blank">akarshsimha@gmail.com</a>&gt;</span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div dir="ltr"><div><div><div><div>Hi<br><br></div>This is \
something very nice to have!<br><br></div>A caveat to consider is the licensing for \
DSS imagery. They are not available for commercial use, so we must ship this as an \
add-on through KNewStuff (&quot;Get New Data&quot;)<br><br></div><div>Other sources \
of images are SDSS, the Hubble Legacy Archive (<a href="http://hla.stsci.edu" \
target="_blank">hla.stsci.edu</a>) and the recently released PanStarrs 1 survey. I \
think the PanStarrs 1 survey has a large sky coverage (possibly even all sky -- I \
haven&#39;t checked). SDSS has a somewhat small footprint, and the Hubble only has \
objects of interest.<br><br></div><div>I didn&#39;t quite get what the problem \
involved is. The DSS is made from digitizing scanned plates mostly from the Palomar \
Observatory and UKSTU telescope. The result is that many plates have artefacts, and \
they are completely uncalibrated. Planetary nebulae and bright emission nebulae tend \
to be overexposed. There is no way around these problems other than going to other \
surveys.<br><br></div><div>Regards<span class="HOEnZb"><font \
color="#888888"><br></font></span></div><span class="HOEnZb"><font \
color="#888888"><div>Akarsh<br><br></div></font></span></div></div> \
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div \
class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Best \
Regards,<br>Jasem Mutlaq<br></div><div><br></div></div></div> </div>


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