IC 1311 (2025)

This is my latest, it features an open cluster, IC 1311, in a sea of hydrogen gas. IC 1311 is an open cluster with hundreds of stars approximately 4000 light-years away in the constellation Cygnus. In addition to the emission nebula which it resides in, a dark nebula, LDN 885, and a planetary nebula, PN G077.6+04.3 (DSH J2009.6+4114) below and to the right of the cluster, are also found in this rich background. I really like the color and swirling structure of the emission nebula, especially in the upper portion of the image. I like to say I found this on my own, but credit goes to Robert Eder for showcasing this object a few months ago with a larger focal length setup. These clusters embedded in nebulae are becoming my favorite objects to image!

Higher Quality:
https://www.astrobin.com/21jd6d/?nc=collection&nce=712

IC 1311 (2025)
Dates: 8-3-25, 8-12, 8-14
Camera: ZWO ASI1600MM-Pro
Telescope: Astro-Tech AT115EDT 115mm Refractor Telescope
Barlow: None
Focal Length: 805mm (644mm w/ FR)
f/7 (f/5.6)
Focal Reducer: 0.8x AstroTech Field Flatterner/Focal Reducer
Mount: Orion Sirius
Filter Wheel: ZWO
EFW 8 x 1.25"
Filter: Antlia Ha; ZWO R, G, B
Focuser: ZWO EAF
Autoguiding: ASI120 Mini attached to an Agena 50mm Guide Scope/ZWO 60mm Guidescope
Exposure: Ha 76 x 300, R 59 x 90, G 54 x 90, B 55 x 90 (10h 32m)
Gain: 139
Offset 20
Sensor Temp: 0 C
Processing: NINA, PixInsight, Photoshop, BlurXTerminator, StarXTerminator, NoiseXTerminator, GraXpert, Bill Blanshan Color Masks, Bill Blanshan Stretching, Topaz Denoise.

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