M15 in HaOIIILRGB + iTex+ LRGB SHO-3nm

M15 in HaOIIILRGB

Credit:  iTex

Filters: Optolong LRGB, Optolong SHO-3nm

 

 

 

 

M 15 in HaOIIILRGB
Messier 15 (M15) is one of the oldest and densest globular clusters known in our galaxy, the Milky Way. Located in the constellation Pegasus, it is approximately 34,000–35,700 light-years from Earth and is visible even with small telescopes or binoculars under dark skies.
It contains over 100,000 stars concentrated within an area just 10 light-years in diameter. Among these are numerous pulsars, X-ray sources and over 110 variable stars.
Together with the team at Itex, we decided to re-image this wide-field view in HaO3LRGB mode: this was to break away from the usual way of viewing this cluster and, after many hours of exposure, reveal the faint hydrogen signal hidden throughout the field; and, more challenging still, we spent many hours in the Oxygen III band, because after careful online analysis, we became certain of the presence of this faint signal in certain areas around the cluster itself
Image processed by Mirko Tondinelli.

 

 

 

 

 

Integration
Lum/Clear: 51×600″ 8h 30′
R: 1h 25′
G: 1h 25′
B: 1h 25′
Hα:129×900″ 32h 15′
OIII: 63×900″ 15h 45′
Totals: 60h 45′ 

 

Imaging equipment
Telescope:TS-Optics 70 mm f/5 Quadruplet
Camera: QHYCCD QHY268 M
Mount: iOptron HAE29EC

Filters:
Optolong Blue 2"
Optolong Green 2"
Optolong H-Alpha 3nm 2"
Optolong Luminance 2"
Optolong OIII 3nm 2"
Optolong Red 2"

Accessories:
DeepSkyDad Flap Panel (FP2)
QHYCCD QHYCFW3-L
WandererAstro WandererBox Plus V3
WandererAstro WandererRotator Mini
ZWO EAF

Software: Adobe Photoshop
Open PHD Guiding Project PHD2
Pleiades Astrophoto PixInsight
Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)

Hope you like it.