The Longhorn (LBN 251) – (Rouz Astro Reducer-OAG Kit)

The Longhorn (LBN 251) – (Rouz Astro Reducer-OAG Kit)

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Equipment

Imaging Telescopes Or Lenses : Planewave CDK14 (Rouz Astro Reducer-OAG Kit)
Imaging Cameras : QHYCCD QHY600PH M
Mounts : Astro-Physics 1100GTO
Filters : Chroma H-alpha 3nm Bandpass 50 mm · Chroma OIII 3nm Bandpass 50 mm · Chroma SII 3nm Bandpass 50 mm
Accessories : Optec Gemini Rotating Focuser · Planewave Reducer 0.66x CDK12.5-14-17
Software : Pleiades Astrophoto PixInsight
Guiding Cameras : ZWO ASI174MM Mini

Acquisition details

Dates : July 29, 2022
Frames : Chroma H-alpha 3nm Bandpass 50 mm: 43×600″(7h 10′) (gain: 56.00) -10°C bin 1×1
Chroma OIII 3nm Bandpass 50 mm: 37×600″(6h 10′)
Chroma SII 3nm Bandpass 50 mm: 36×600″(6h)
Integration : 19h 20′
Avg. Moon age : 0.69 days
Avg. Moon phase : 0.54%
Bortle Dark-Sky Scale : 6.00

Description

LBN251 in Cygnus, resembling a longhorn bull, not a very common target and my first time imaging this region of the sky.

The background wisps are relatively dim compared to the bright foreground. The dynamic range of the QHY600 in highgain mode was enough to capture both using 600s subs at -10 degC.
The overall integration times had to be quite long to get a clean background SNR.

The reducer was used to enlarge the FOV allowing the main portions of the target to be framed by the 43mm sensor.

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