Rosette Nebula - 2nd Try, 



Rosette Nebula - 2nd Try

Rosette Nebula - 2nd Try, 



Rosette Nebula - 2nd Try

Technical card

Imaging telescopes or lenses: Sky Watchter Esprit 100 ED

Imaging cameras: ZWO ASI 1600MM-Pro Cooled (Mono)

Mounts: SKy Watcher EQ6-R Pro EQ6-R Pro

Guiding cameras: ZWO ASI 290MM Mini ASI 290MM Mini Guide

Focal reducers: Sky-Watcher Esprit 100 Field Flattener Esprit 100 FF

Software: Adobe Photoshop CC 2021  ·  DeepSkyStacker (DSS) DSS

Filters: ZWO OIII 7nm 1.25"  ·  ZWO Ha 7nm 1.25"

Accessory: ZWO EFW 8 x 1.25"

Dates:Nov. 29, 2020

ZWO Ha 7nm 1.25": 20x300" (1h 40') (gain: 139.00) -20C bin 1x1
ZWO OIII 7nm 1.25": 20x300" (1h 40') (gain: 139.00) bin 1x1

Integration: 3h 20'

Darks: 20

Flats: 60

Bias: 30

Avg. Moon age: 13.94 days

Avg. Moon phase: 99.24%

Bortle Dark-Sky Scale: 7.00

Resolution: 8760x6524

Data source: Backyard


This was my 2nd attempt @ The Rosette Nebula in HOO. I took my first ever DSO image 3 days prior (also of The Rosette in HOO) and while I was excited about the first image, I knew it could be better. I also included calibration frames in this attempt. I was really able to see, first hand as a new guy, how much of a difference calibration frames can make. I also exposed each image for 60 more seconds to 300 sec per image while also increasing the number of light frames. Not by much, just 8 more per filter. I look forward to getting even more data and working with my first data in the future when I really start to grasp the processing and develop a consistent routine. Thanks for looking!! Criticism and suggestions are certainly welcome!!



Rosette Nebula - 2nd Try,