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List: kstars-devel
Subject: Re: NGC Thumbnails
From: Jasem Mutlaq <mutlaqja () ikarustech ! com>
Date: 2017-04-18 12:13:55
Message-ID: CAE0bU5=bayN=x6r9M1Anz+Cq7YPDkd2Az=WmeKZ4TW8n4icXjQ () mail ! gmail ! com
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Yup we can publish an updated version if we get better data
On Tue, Apr 18, 2017 at 2:59 PM, John S. <myxlflik@hotmail.com> wrote:
> Oh wow. I thought you wanted to try to work on them some more. Assuming
> we can get better images for this, what will the process be to update this
> now that it is incorporated? Just publish a new version and have them
> download it via that data downloads in Kstars?
>
>
> ------------------------------
> *From:* Jasem Mutlaq <mutlaqja@ikarustech.com>
> *Sent:* Tuesday, April 18, 2017 4:38 AM
> *To:* John S.
> *Cc:* Hans; KStars Development Mailing List
> *Subject:* Re: NGC Thumbnails
>
> I just added them to KStars. I used your name "John S." and email address.
> Please let me know if you want to change any of those as they appear in the
> download dialog. I'll try to add previews as well since we do not have
> previews for _any_ download before.
>
> On Mon, Apr 17, 2017 at 7:44 PM, John S. <myxlflik@hotmail.com> wrote:
>
>> Did anyone have any further input on this? Is it worth pursuing and
>> adding to Kstars?
>>
>>
>>
>> ------------------------------
>> *From:* John S. <myxlflik@hotmail.com>
>> *Sent:* Saturday, April 15, 2017 11:00 AM
>>
>> *To:* Hans
>> *Cc:* KStars Development Mailing List
>> *Subject:* Re: NGC Thumbnails
>>
>>
>> Here is a link to the current NGC file tarball and the rudimentary
>> install and removal scripts. This has only been tested on Linux Mint, but
>> suspect it will be fine on all versions:
>>
>> https://1drv.ms/u/s!AnSnRFrNRtfXviEYxBIM2pNlmuc6
>>
>>
>> Here is a link to the current IC file tarball. Same caveats as the NGC
>> file:
>>
>> https://1drv.ms/u/s!AnSnRFrNRtfXviLmrzlp6Ru6N7KZ
>>
>> The images are all of the DSS2R (Red Plate) survey only. There is an
>> ability to pull data into RGB using the DSS2R, DSS and DSS2B surveys (or
>> really any other combination for that matter). I have found that in nearly
>> all cases, the colors needed subsequent adjustment in order to make the
>> images look palatable. I honestly felt the red channel ones and gray scale
>> worked out just find overall. I know there are some outright bad images in
>> there and I haven't had the time or inclination to weed through the 13,000
>> objects I pulled to clean it up as of yet. I can certainly do it, but it
>> would largely depend on how strongly this group felt about it's inclusion.
>> I agree it should be an add-on package and not part of the base install.
>> We will need to make sure to credit the sources of the images as well.
>>
>>
>> One thing we may need to consider is directory management. Downloading
>> all of these images puts 13,000+ files in the $HOME/.local/share/kstars
>> directory. That's a pretty good chunk of files for a single directory. I
>> may make sense to compile these into some sort of database file or put them
>> in a directory structure. I am not a developer though and have NO skill
>> when it comes to that aspect of this project.
>>
>>
>> John
>> ------------------------------
>> *From:* John S. <myxlflik@hotmail.com>
>> *Sent:* Saturday, April 15, 2017 10:15 AM
>> *To:* Hans
>> *Cc:* KStars Development Mailing List
>> *Subject:* Re: NGC Thumbnails
>>
>> I started this project for my own personal gratification. I personally
>> don't mind that some of the objects are subpar quality. Most of those
>> objects are very interesting to me anyway. However, I would like to make
>> sure that it meets certain quality levels. I am open to input for how to
>> rectify the situation. I believe the limits of the survey itself will limit
>> the outlet quality though. If you want I'll post the links to the two
>> tarballs for the NGC and IC objects and you can download them a try for
>> yourself.
>>
>> John
>>
>> > On Apr 15, 2017, at 9:02 AM, Hans <hans@lambermont.dyndns.org> wrote:
>> >
>> > Agreed, this is something very nice to have. And it is tedious work
>> too. For
>> > images that don't look too good I expect we'll even get negative
>> remarks, but
>> > that should not inhibit this project. To me having a skimpy image is
>> far better
>> > than no image at all.
>> >
>> > Is the idea to have an image library or to dynamically download them on
>> demand ?
>> >
>> > -- Hans
>> >
>> > Jasem Mutlaq wrote on 20170415:
>> >
>> >> 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
>> >
>> >
>> >
>> >
>> >
>>
>
>
>
> --
> Best Regards,
> Jasem Mutlaq
>
>
--
Best Regards,
Jasem Mutlaq
[Attachment #3 (text/html)]
<div dir="ltr">Yup we can publish an updated version if we get better data</div><div \
class="gmail_extra"><br><div class="gmail_quote">On Tue, Apr 18, 2017 at 2:59 PM, \
John S. <span dir="ltr"><<a href="mailto:myxlflik@hotmail.com" \
target="_blank">myxlflik@hotmail.com</a>></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 id="m_7160945877431352804divtagdefaultwrapper" \
style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif" \
dir="ltr"> <p>Oh wow. I thought you wanted to try to work on them some more. \
Assuming we can get better images for this, what will the process be to update this \
now that it is incorporated? Just publish a new version and have them download it \
via that data downloads in Kstars?<br>
</p>
<br>
<br>
<div style="color:rgb(0,0,0)">
<hr style="display:inline-block;width:98%">
<div id="m_7160945877431352804divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" \
face="Calibri, sans-serif" color="#000000"><b>From:</b> Jasem Mutlaq <<a \
href="mailto:mutlaqja@ikarustech.com" \
target="_blank">mutlaqja@ikarustech.com</a>><br> <b>Sent:</b> Tuesday, April 18, \
2017 4:38 AM<br> <b>To:</b> John S.<br>
<b>Cc:</b> Hans; KStars Development Mailing List<br>
<b>Subject:</b> Re: NGC Thumbnails</font>
<div> </div>
</div><div><div class="h5">
<div>
<div dir="ltr">I just added them to KStars. I used your name "John S." and \
email address. Please let me know if you want to change any of those as they appear \
in the download dialog. I'll try to add previews as well since we do not have \
previews for _any_ download before.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Apr 17, 2017 at 7:44 PM, John S. <span dir="ltr">
<<a href="mailto:myxlflik@hotmail.com" \
target="_blank">myxlflik@hotmail.com</a>></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 id="m_7160945877431352804m_7936534728735227365divtagdefaultwrapper" dir="ltr" \
style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif"> \
<p>Did anyone have any further input on this? Is it worth pursuing and adding to \
Kstars?<br> </p>
<div class="m_7160945877431352804hm m_7160945877431352804HOEnZb"></div>
<p></p>
<div class="m_7160945877431352804hm m_7160945877431352804HOEnZb"><br>
<br>
</div>
<div style="color:rgb(0,0,0)">
<div class="m_7160945877431352804hm m_7160945877431352804HOEnZb">
<hr style="display:inline-block;width:98%">
</div>
<div id="m_7160945877431352804m_7936534728735227365divRplyFwdMsg" dir="ltr"><font \
style="font-size:11pt" face="Calibri, sans-serif" color="#000000"> <div \
class="m_7160945877431352804hm m_7160945877431352804HOEnZb"><b>From:</b> John S. \
<<a href="mailto:myxlflik@hotmail.com" \
target="_blank">myxlflik@hotmail.com</a>><br> <b>Sent:</b> Saturday, April 15, \
2017 11:00 AM</div> <div>
<div class="m_7160945877431352804h5"><br>
<b>To:</b> Hans<br>
<b>Cc:</b> KStars Development Mailing List<br>
<b>Subject:</b> Re: NGC Thumbnails</div>
</div>
</font>
<div> </div>
</div>
<div>
<div class="m_7160945877431352804h5">
<div>
<div id="m_7160945877431352804m_7936534728735227365divtagdefaultwrapper" dir="ltr" \
style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif"> \
<p>Here is a link to the current NGC file tarball and the rudimentary install and \
removal scripts. This has only been tested on Linux Mint, but suspect it will be \
fine on all versions:</p> <p><a \
href="https://1drv.ms/u/s!AnSnRFrNRtfXviEYxBIM2pNlmuc6" \
class="m_7160945877431352804m_7936534728735227365OWAAutoLink" \
id="m_7160945877431352804m_7936534728735227365LPlnk121453|2:odcLink" \
target="_blank">https://1drv.ms/u/s!AnSnRFrNRt<wbr>fXviEYxBIM2pNlmuc6</a></p> <p><br>
</p>
<p>Here is a link to the current IC file tarball. Same caveats as the NGC file:</p>
<p><a href="https://1drv.ms/u/s!AnSnRFrNRtfXviLmrzlp6Ru6N7KZ" \
class="m_7160945877431352804m_7936534728735227365OWAAutoLink" \
id="m_7160945877431352804m_7936534728735227365LPlnk131504|2:odcLink" \
target="_blank">https://1drv.ms/u/s!AnSnRFrNRt<wbr>fXviLmrzlp6Ru6N7KZ</a><br> </p>
<br>
<p>The images are all of the DSS2R (Red Plate) survey only. There is an ability to \
pull data into RGB using the DSS2R, DSS and DSS2B surveys (or really any other \
combination for that matter). I have found that in nearly all cases, the colors \
needed subsequent adjustment in order to make the images look palatable. I \
honestly felt the red channel ones and gray scale worked out just find overall. I \
know there are some outright bad images in there and I haven't had the time or \
inclination to weed through the 13,000 objects I pulled to clean it up as of yet. \
I can certainly do it, but it would largely depend on how strongly this group felt \
about it's inclusion. I agree it should be an add-on package and not part of \
the base install. We will need to make sure to credit the sources of the images as \
well.</p> <p><br>
</p>
<p>One thing we may need to consider is directory management. Downloading all of \
these images puts 13,000+ files in the $HOME/.local/share/kstars directory. \
That's a pretty good chunk of files for a single directory. I may make sense to \
compile these into some sort of database file or put them in a directory structure. \
I am not a developer though and have NO skill when it comes to that aspect of this \
project.</p> <p><br>
</p>
<p>John<br>
</p>
<div style="color:rgb(0,0,0)">
<div>
<hr style="display:inline-block;width:98%">
<div id="m_7160945877431352804m_7936534728735227365x_divRplyFwdMsg" dir="ltr"><font \
style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> John \
S. <<a href="mailto:myxlflik@hotmail.com" \
target="_blank">myxlflik@hotmail.com</a>><br> <b>Sent:</b> Saturday, April 15, \
2017 10:15 AM<br> <b>To:</b> Hans<br>
<b>Cc:</b> KStars Development Mailing List<br>
<b>Subject:</b> Re: NGC Thumbnails</font>
<div> </div>
</div>
</div>
<font size="2"><span style="font-size:10pt">
<div class="m_7160945877431352804m_7936534728735227365PlainText">I started this \
project for my own personal gratification. I personally don't mind that some of \
the objects are subpar quality. Most of those objects are very interesting to me \
anyway. However, I would like to make sure that it meets certain quality levels. I \
am open to input for how to rectify the situation. I believe the limits of the survey \
itself will limit the outlet quality though. If you want I'll post the links to \
the two tarballs for the NGC and IC objects and you can download them a try for \
yourself.<br> <br>
John<br>
<br>
> On Apr 15, 2017, at 9:02 AM, Hans <<a \
href="mailto:hans@lambermont.dyndns.org" \
target="_blank">hans@lambermont.dyndns.org</a>> wrote:<br> > <br>
> Agreed, this is something very nice to have. And it is tedious work too. \
For<br> > images that don't look too good I expect we'll even get negative \
remarks, but<br> > that should not inhibit this project. To me having a skimpy \
image is far better<br> > than no image at all.<br>
> <br>
> Is the idea to have an image library or to dynamically download them on demand \
?<br> > <br>
> -- Hans<br>
> <br>
> Jasem Mutlaq wrote on 20170415:<br>
> <br>
>> I'm attaching a few examples so you can see why we can't use them as \
is in<br> >> KStars.<br>
>> <br>
>>> On Sat, Apr 15, 2017 at 9:43 AM, Akarsh Simha <<a \
href="mailto:akarshsimha@gmail.com" target="_blank">akarshsimha@gmail.com</a>> \
wrote:<br> >>> <br>
>>> Hi<br>
>>> <br>
>>> This is something very nice to have!<br>
>>> <br>
>>> A caveat to consider is the licensing for DSS imagery. They are not<br>
>>> available for commercial use, so we must ship this as an add-on \
through<br> >>> KNewStuff ("Get New Data")<br>
>>> <br>
>>> Other sources of images are SDSS, the Hubble Legacy Archive (<a \
href="http://hla.stsci.edu" target="_blank">hla.stsci.edu</a>)<br> >>> and \
the recently released PanStarrs 1 survey. I think the PanStarrs 1<br> >>> \
survey has a large sky coverage (possibly even all sky -- I haven't<br> \
>>> checked). SDSS has a somewhat small footprint, and the Hubble only \
has<br> >>> objects of interest.<br>
>>> <br>
>>> I didn't quite get what the problem involved is. The DSS is made \
from<br> >>> digitizing scanned plates mostly from the Palomar Observatory \
and UKSTU<br> >>> telescope. The result is that many plates have artefacts, \
and they are<br> >>> completely uncalibrated. Planetary nebulae and bright \
emission nebulae tend<br> >>> to be overexposed. There is no way around \
these problems other than going<br> >>> to other surveys.<br>
>>> <br>
>>> Regards<br>
>>> Akarsh<br>
>>> <br>
>>> <br>
>> <br>
>> <br>
>> -- <br>
>> Best Regards,<br>
>> Jasem Mutlaq<br>
> <br>
> <br>
> <br>
> <br>
> <br>
</div>
</span></font></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="m_7160945877431352804gmail_signature">
<div dir="ltr">
<div>Best Regards,<br>
Jasem Mutlaq<br>
</div>
<div><br>
</div>
</div>
</div>
</div>
</div>
</div></div></div>
</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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