Hemisphere:  Southern  ·  Constellation: Canis Major (CMa)  ·  Contains:  The star ο1CMa
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SH2-308 Dolphin, 



    
        

            Todd
SH2-308 Dolphin
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SH2-308 Dolphin

Getting plate-solving status, please wait...
SH2-308 Dolphin, 



    
        

            Todd
SH2-308 Dolphin
Powered byPixInsight

SH2-308 Dolphin

Technical card

Imaging telescopes or lenses: Skywatcher 100ED F9 APO Skywwtcher ED100

Imaging cameras: ZWO ASI1600MM Pro

Mounts: SkyWatcher EQ6R Pro

Guiding telescopes or lenses: SVBONY 60mm Guide Scope

Guiding cameras: QHYCCD QHY5L-II-M

Focal reducers: Skywatcher 0.85x Focal Reducer 100ED

Software: Pixinsight 1.8  ·  GIMP

Filters: ZWO OIII 36mm  ·  ZWO Ha 36mm


Dates:Feb. 1, 2021Feb. 10, 2021

Frames:
ZWO Ha 36mm: 25x900" (6h 15') (gain: 200.00) bin 1x1
ZWO OIII 36mm: 30x600" (5h) (gain: 200.00) bin 1x1

Integration: 11h 15'

Darks: 30

Flats: 20

Avg. Moon age: 23.44 days

Avg. Moon phase: 42.87%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 4525743

RA center: 06h54m14s.6

DEC center: -23°5515

Pixel scale: 0.999 arcsec/pixel

Orientation: 98.960 degrees

Field radius: 0.672 degrees


Resolution: 3424x3424

Data source: Backyard

Description

The darling of (Southern Hemisphere) Summer... SH2-308 Dolphin Nebula

While I collected the Oiii on Wednesday night, I noticed that the brightest star in this field is naked eye visible from my Bortle 5 yard. Nice to know that when I look up at Canis Major, I am "seeing" this on the rear flank of the pooch.

This persnickety porpoise has tested the limits of my skills and gear. The Ha is still not super strong at 25 x900s subs, Oiii used 30 x600s because I forgot my strategy over the days between collecting each set 🙃

Think it needs a faster image train than f/7.6 but here it is in HOO with a couple of stars collected with the 163C through El Bucko layered in. Still haven't cracked the HOO combination code to make really natural looking stars from narrowband data.

Comments

Revisions

  • SH2-308 Dolphin, 



    
        

            Todd
    Original
  • Final
    SH2-308 Dolphin, 



    
        

            Todd
    B

B

Description: I've reprocessed this using new techniques and feel much happier with the colour balance now.

Uploaded: ...

Sky plot

Sky plot

Histogram

SH2-308 Dolphin, 



    
        

            Todd