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Links

Sky Atlas
Aladin:  http://aladin.u-strasbg.fr/
SIMBAD:  http://simbad.u-strasbg.fr/simbad/sim-id?Ident=LEDA+1594711&NbIdent=1 
Cartes du Ciel
VizieR:  http://vizier.unistra.fr/viz-bin/VizieR
Wikisky
POSS   http://stdatu.stsci.edu/
Digital Sky Survey:  http://archive.eso.org/dss/dss
Blackwater Skies:  http://www.blackwaterskies.co.uk/imaging-toolbox/

Book References
The Deep-Sky Imaging Primer (Charles Bracken)
Remote Observatoriesfor Amateur Astronomers (Gerald R. Hubbel, Richard J. Williams, Linda M. Billard)
Getting STarted: Long Exposure Astrophotography (Allan Hall)
The Backyard Astronomer's Guide 3rd Edition (Terence Dickinson & Alan Dyer)

Forum References
10:1 Ratio for main-guider:
http://www.diffractionlimited.com/forum/index.php?threads/st-i-guiding-kit-application-range.2419/#post-12653
Image Scale = 205 * pixel_size (microns) / focal length (mm)

General Astronomy Information
Excellent introduction to many AP related topics
http://www.jtwastronomy.com/tutorials.html

Galatic Coordinate Systems
http://burro.case.edu/Academics/Astr306/Coords/coords.html

Lookup Digital Sky Survey images
http://stdatu.stsci.edu/cgi-bin/dss_form/
https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html

Excellent for showing equipment FOV
http://www.blackwaterskies.co.uk/imaging-toolbox/

RA DEC flexible converter (use " d 15.3434  35.342234 " for DEC/RA degrees)
http://www.astrouw.edu.pl/~jskowron/ra-dec/

Collimation/Seeing
http://www.sctscopes.net/SCT_Tips/Maintenance/Collimation/collimation.html
http://www.astrophoto.fr/collim.html
http://www.astro-imaging.com/Tutorial/Seeing.html
https://en.wikipedia.org/wiki/Astronomical_seeing
http://www.cloudynights.com/topic/424720-re-collimation-of-the-vixen-vmc200l-long/    (VC200L specific)

Magnification Math
http://www.stargazing.net/naa/scopemath.htm

Astronomical Conversions
http://docs.astropy.org/en/latest/coordinates/index.html
https://www.continuum.io/downloads  (science platform powered by Python)
In [1]: from astropy import units as u
In [2]: from astropy.coordinates import SkyCoord
In [3]: c = SkyCoord(ra=233.089*u.degree, dec=15.589*u.degree, frame='icrs')
In [4]: c
Out[4]:
<SkyCoord (ICRS): (ra, dec) in deg
(233.089, 15.589)>
In [5]: c.to_string('hmsdms')
Out[5]: '15h32m21.36s +15d35m20.4s'

PixInsight Post Processing
http://pixinsight.com.ar/en/info/processing-examples/29/preprocessing-linear-postprocessing-m101.html
http://dslr-astrophotography.com/basic-dslr-workflow-pixinsight/

Parts
http://www.preciseparts.com/ppmain/index.html
   FeatherTouch 2515 without end cap -> 0mm -> Vixen VC2xxL f/6.4 reducer
http://scopestuff.com/

Non-Astrophotography Related Videos

Earth model/elevation:
http://dwtkns.com/srtm
http://earthexplorer.usgs.gov

Tank Game 1994:  https://www.youtube.com/watch?v=9ISfPb2N1A4

GW2 Melodi Harmoni:  https://www.youtube.com/watch?v=GEV47OnDCSY
GW2 Amy Sunshine PART 1:
https://www.youtube.com/watch?v=VKKPnKZIG3M
GW2 Amy Sunshine PART 2:  https://www.youtube.com/watch?v=k4ek_xOjxoM

Disney Light Parade (full):  https://www.youtube.com/watch?v=GSjmhZhfJJM

Blue Mosque (Istanbul):  https://www.youtube.com/watch?v=w2OYiFXhvIM
Statue of David (Florence):  https://www.youtube.com/watch?v=PW6FC3PcH3M

KO MightyMinh PART 1:  https://www.youtube.com/watch?v=T1UQg-FylS4
KO MightyMinh 2012 PART 2: https://www.youtube.com/watch?v=fTxMMTW6-Gg
KO Xathaneal 2010-2012:  https://www.youtube.com/watch?v=nxNjPcI6o18
KO Xathaneal BTK PK:  https://www.youtube.com/watch?v=I9NqKCniles
KO Vallas/LadyPaloma Wedding:  https://www.youtube.com/watch?v=G_-_3mfuH1E
KO nicolarox 2012 PART 1: https://www.youtube.com/watch?v=2rSlQpE_i_0
KO nicolarox 2012 PART 2:  https://www.youtube.com/watch?v=wpmD4s3f1xI