Tags » Cygnus

Crescent Nebula

Frames : 7 x Ha x 12 min, 8 x OIII x 15 min

Palette mix : R = 0.9*Ha+0.1*OIII, G =0.1*Ha+0.9*OIII, B = OIII)

Astro

Crescent nebula

Frames : 7 x Ha x 12 min, 1 (duplicated 4 times) x OIII x 15 min

Used formula iif(OIII > 0.5, 1-(1-HA)*(1-(OIII -0.5)), HA*(OIII +0.5))  to make synthetic green (from http://lightvortexastronomy.blogspot.com/2013/03/tutorial-nebulae-pixinsight-guide-for.html) 15 more words

Astro

Cygnus -summer meeting of Finnish amateur astronomers was organized in Mäntsälä 17.-20.7.2014

The traditional Cygnus -summer meeting of Finnish amateur astronomers was organized in Mäntsälä, Southern Finland. The event place was a camping site of the local Parish, called Leiriniemi. 347 more words

Meeting

Awas Jebakan Lubang Hitam (!)

Oleh: Awang Harun Satyana

Lubang Hitam (black hole) adalah sebuah objek di Jagat Raya yang paling dramatik sekaligus sangat menarik. Lubang hitam adalah pelahap yang rakus, bintang yang terlalu dekat dengannya akan ditarik, dikunyah dan ditelannya. 640 more words

Geo-Histori

Astrophotography doesn't require a telescope...

Whoever told you that you need a telescope for astrophotography was wrong. If no one told you such a thing, nevermind. My point is: check out what I photographed under the light polluted skies of the outskirts of Amsterdam, using nothing but a dslr and a tripod: 410 more words

Astrophotography

07/18/2014 - Ephemeris - Deneb is the brightest star of the Summer Triangle... Really

Ephemeris for Friday, July 18th.  Today the sun will be up for 15 hours and 8 minutes, setting at 9:22.   The moon, at last quarter today, will rise at 12:58 tomorrow morning.  248 more words

Ephemeris Program

07/17/2014 - Ephemeris - The constellation Cygnus the swan

Ephemeris for Thursday, July 17th.  Today the sun will be up for 15 hours and 10 minutes, setting at 9:23.   The moon, 1 day before last quarter, will rise at 12:25 tomorrow morning.  181 more words

Ephemeris Program