Jellyfish Nebula in HOO

[R1k]

Jellyfish Nebula in HOO

- 4h 45 min integration over 2 nights

- Bortle 6 NW England

- Feedback welcomed 

 

Equipment

- Skywatcher HEQ5-pro (Rowan Belt Mod)

- Canon 800d (modded)

- TS Optics Photoline 80mm Triplet

- TS Optics 0.79x focal reducer/field flattener

- ZWO ASI-120MM-mini guide camera

- Skywatcher Evoguide 50ED guidescope

- 2 inch mounted Optolong L-eNhance

 

 

Acquisition

- Sharpcap polar alignment, ASCOM guiding/dithering with PHD2

- APT image acquisition

- Lights - 36 x 300s, ISO1600 and 15 x 420s, ISO800 (4h 45 min)

- Darks - 8 + 20

- Bias - 40 + 40

- Flats – 40 + 40

 

Processing

- Raw images stacked and calibrated in APP using the algorithms Ha-OIII extract Ha and Ha-OIII extract OIII.

- Mono images combined in APP using the HOO1 algorithm, OIII signal boosted by 2x

- Autostretched file saved as 16bit TIFF and run through Starnet++

- Selective contrast, saturation and stretching to nebula in starless image in Photoshop, denoise of background in this image using camera RAW filter

- Star mask on original combined/stretched image using select colour range – highlights tool

- Stars blended onto starless image

- Original combined and stretched image layered on at opacity 25% so that there was some signal in the dimmer stars

- Crop to preference

 

[peter shah]

Beautiful rendition very deep and I love your framing

[Sunshine]

A wonderful image, I agree regarding the framing, beautiful shot or, shots to be precise.