NGC Thumbnails

[Jasem Mutlaq]

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 at 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
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