Ptolemy’s Cluster in Scorpio ( Messier 7, NGC 6475 ) – by Mike O’Day ( http://ift.tt/1Is21aB ) by MikeODay

Ptolemy’s Cluster in Scorpio ( Messier 7, NGC 6475 ).

Visible to the naked eye as a small bright patch in the sky, this open cluster is around 980 light years away with around 80 stars within a area of 25 light years or so.

Links:

500px.com/MikeODay
http://ift.tt/1EqMoWd

Details:

RA 17h 54m, Dec -34deg 47′.
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher AZ Eq6 GT Mount
Orion auto guider – PHD2.
Baader MPCC Mark 3 Coma Corrector.
Nikon D300 (unmodified).
Field of view (deg) ~ 1.35 x 0.90.
18 x 30 sec ISO800.
23 May 14

Reprocessed Pixinsight 8 Sep 2015

via 500px http://ift.tt/1Ke4c2R

Bright nebula in Scorpius (NGC 6357) by MikeODay

NGC 6357 in Scorpius
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher AZ Eq6 GT Mount
Orion 80mm f5 guide scope and auto guider – PHD2.
Baader MPCC Mark 3 Coma Corrector, UHC-S ‘nebula’ filter.
Nikon D5300 (unmodified).
Field of view (deg) ~ 1.35 x 0.9 deg
UHC-S – 100 x 100 sec ISO800 (14bit NEF, Long Exp. NR on).
Pixinsight and photoshop

via 500px http://ift.tt/1LmtOkk