NGC 7635 - Bubble Nebula in SHO Palette (EasyQuest)

NGC 7635 - Bubble Nebula in SHO Palette

Comments

I recently took delivery of my new iOptron CEM120 to support my William Optics FLT156 as well as future larger scopes like Celestron EdgeHD 11". For my first light on this mount. I decided on a SHO project of NGC 7635 - Bubble Nebula in Cassiopeia. This target stays out for a very long time so I manage to get a total of 23 hours of good data. The final image is the second version of SHO palette of the Bubble Nebula.

Moon Phase, Location, and Date

Moon Phase: 100%, 99%, 95%, 90%, 75%, 67%, 43%, 30% (Moon during HA and SII session, very little moon for OIII)
Murfreesboro, TN (Bortle 6)
August 22,23,24,25,27,28, 2021
September 1, 2021

Equipment

Telescope/Lens: William optics Fluorostar 156 (1228 mm at f/7.8 )
Flattener/Reducer: William Optics Flattener 68III (1.0x Native focal length)
Auto Focuser: ZWO EAF Electronic Automatic Focuser
Filter: Chroma 31mm SII 3nm Telescope Filter - Unmounted
Filter: Chroma 31mm HA 3nm Telescope Filter - Unmounted
Filter: Chroma 31mm OIII 3nm Telescope Filter - Unmounted
Filter Wheel: ZWO EFW (8 x 31mm/1.25″)
Mount: iOptron CEM120
Tri-Pier: iOptron Tri-Pier with 8036-120 Adapter (Stop gap Tri-pier until iOptron Tri-Pier 360 for CEM120 Mount comes in)
Off-Axis Guider: ZWO OAG
Guider: ZWO ASI120MM-MINI
Dew Heater Controller: Pegasus Astro Pocket Powerbox Micro (Clean up Cables)
Dew Heater: AstroStrap Dew Heater for 7" Telescopes
Camera: ZWO ASI294MM Pro
Polar Alignment: QHYCCD Polemaster (Precise polar alignment)
Intel NUC (For imaging, dither, auto guiding, plate solve, Pegasus Astro Software Control) (Replaced laptop to clean up cables)

Software

PHD2 (For Auto Guiding)
QHYCCD PoleMaster Software (Polar Alignment)
Astrophotography Tool (APT) (For Dither, plate solve, mount control)
EQMOD (Remove Hand Controller and allow pulse guiding)
Pegasus Astro Pocket Powerbox (Control the Pocket Powerbox Micro)
Deep Sky Stacker (Stacking Frames)
Photoshop (Processing)
PixInsight (Processing)

Acquisition

Exposure per Filter: 23 hrs
HA - 72 X 300s (6 hrs)
SII - 96 x 300s (8 hrs)
OIII - 108 x 300s (9 hrs)
Temperature: -10°C on all calibration frames as well as light frames
40 Flats for SII and OIII
60 Flats for HA
30 Darks (Used Master Dark file)
30 Bias (Used Master Bias file)
Gain: 120 (Unity Gain)
Bin: 2x2 (Full resolution if left 1x1 which is the IMX492 sensor.)
Offset: Left Default

Processing in Photoshop and PixInsight

Stacked in DSS
Edited in Photoshop
RC-Astro GradientXTerminator
RC-Astro StarXTerminator in Photoshop
Adjusted levels
Adjusted Curves
Selective Curves Adjustment
Color Correction
Blacks Correction
Sharpening Applied
Noise reduction on all channels
Cropped
Morphological Transformation in PixInsight for Star reduction
Linear Dodge to add stars back on

Original
Final
B

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Advanced success
Started	...
Astrometry.net job	5292410
PixInsight job	K1ZENQUXWDMBEUCKACV5J3LTUF1QCMMT
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	23h20m41s.820
RA (top/left)	23h22m55s.824
RA (top/right)	23h23m03s.727
RA (bottom/right)	23h18m23s.980
RA (bottom/left)	23h18m22s.282

Dec (center)	+61°10′56″.94
Dec (top/left)	+60°46′34″.24
Dec (top/right)	+61°34′52″.18
Dec (bottom/right)	+61°35′14″.37
Dec (bottom/left)	+60°46′54″.11

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