Sadr VDB130 – (Rouz Astro Reducer-OAG Kit)

Sadr VDB130 – (CDK14 Hi-Res) (Higher red levels) – (Rouz Astro Reducer-OAG Kit)

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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 · Chroma OIII 3nm Bandpass · Chroma SII 3nm Bandpass
Accessories : Optec Gemini Rotating Focuser · Planewave Reducer 0.66x CDK12.5-14-17
Guiding Cameras : ZWO ASI174MM Mini

Acquisition details

Dates : July 21, 2022
Frames : Chroma H-alpha 3nm Bandpass: 61×600″(10h 10′) (gain: 56.00) bin 1×1
Chroma OIII 3nm Bandpass: 31×600″(5h 10′)
Chroma SII 3nm Bandpass: 35×600″(5h 50′)
Integration : 21h 10′
Avg. Moon age : 22.99 days
Avg. Moon phase : 41.07%
Bortle Dark-Sky Scale : 6.00
Mean FWHM : 2.20
Temperature : -10.00


Best viewed in full resolution

VDB130 in the Sadr region (part of Cygnus), not commonly imaged, located between the Crescent and Butterfly Nebula.
The reflection nebula is associated with young stars in the surrounding cluster.
The intricate filaments in the center of the frame were the highlights I thought.

I did find the processing this one quite challenging and spent a good part of a day trying to get to this iteration.

The integration times here were longer than I usually needed but luckily the clear summer nights afforded the extra time.

Seeing was exceptionally good with some subs down to 1.8″. This allowed resampling to be kept low at 75% to achieve the high resolution since the SNR was relatively high thanks to the fast f/4.75 configuration and the low read noise of the QHY600 at gain56 in high gain mode.

The uncompressed file was 717MB with over 60Mpixs, it had to be downsampled and compressed to be uploaded.

The 3nm filters helped isolate the nebulosity quite well despite the bottle 6 skies.

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