Every day our eyes catch the light of our memories – time spent with family, the journey to work, a special holiday, a beautiful sunset or a dark starlit night. Each image captured is a picture drawn in light – a photograph: only to be lost in our minds or forever forgotten. Nearly two hundred years ago a small group of amateur scientists achieved what had eluded mankind for centuries – the ability to capture a permanent record of an image seen by their own eyes – a moment in time frozen onto a surface. They had discovered Photography. They were the ‘Catchers of the Light’.

Thursday, April 17, 2025

Full Moon in ir 850nm

 

An interesting view of the full moon at 850 nm with the ZWO IR 850 filter.

this filter allows the passage of infrared light at 850 nm, which can be useful for cameras sensitive to the infrared spectrum. This helps isolate specific details and features in planetary and lunar objects that are more visible in infrared light.

By using the IR 850nm filter, interference from visible light is reduced, which can improve the contrast and sharpness of images, especially under conditions of atmospheric turbulence or in the presence of ambient lighting.

If you are using a color camera such, you can use it as a monochrome camera with this filter by setting the white balance parameters (WB_R and WB_B) to 50, so that no white balance is applied and you can fully exploit the sensitivity in the infrared spectrum.

W.O FLT110 with dedicated TMB field flattener
Sky-Watcher EQ6 Pro Belt Drive Mod
Asi 533 MC Pro Color  with ZWO IR 850
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser

Location: Via Lactea Observatory, Kristallopigi Paramithia, Greece

Sunday, April 13, 2025

NGC 3169 and NGC 3166

NGC 3169 is a spiral galaxy about 75 million light years away in the constellation Sextans. It has the morphological classification SA(s)a pec, which indicates this is a pure, unbarred spiral galaxy with tightly-wound arms and peculiar features.There is an asymmetrical spiral arm and an extended halo around the galaxy.It is a member of the NGC 3166 Group of galaxies, which is a member of the Leo II Groups, a series of galaxies and galaxy clusters strung out from the right edge of the Virgo Supercluster.

NGC 3166 is a lenticular galaxy in the constellation Sextans. The galaxy lies about 65 million light years away from Earth, which means, given its apparent dimensions, that NGC 3166 is approximately 105,000 light years across.It was discovered by William Herschel on December 19, 1783.

Luminance data: Kostas Tsekas

Avalon linear fast reverse

Askar 107 PHQ Flatfield Astrograph
Asi 533 MM Pro
ZWO ASI290MM Mini (mono) + WO UniGuide 50mm Scope
Location: Stinger of Scorpius Observatory, Filiates, Thesprotia, Greece.

Color data: Theodore Arampatzoglou

W.O FLT110 with dedicated TMB field flattener
Sky-Watcher EQ6 Pro Belt Drive Mod
Asi 533 MC Pro Color
W.O ZS 80 ED
P1 Mars-C IMX 462
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser

Location: Via Lactea Observatory, Kristallopigi Paramithia, Greece

Total Integration:14h 6min