Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  Gem A  ·  IC 443  ·  IC 444  ·  Part of the constellation Gemini (Gem)  ·  The star Propus (ηGem)  ·  The star μGem
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Jellyfish Nebula plus SH2-249 plus IC444, 



    
        

            bobzeq25
Jellyfish Nebula plus SH2-249 plus IC444
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Jellyfish Nebula plus SH2-249 plus IC444

Getting plate-solving status, please wait...
Jellyfish Nebula plus SH2-249 plus IC444, 



    
        

            bobzeq25
Jellyfish Nebula plus SH2-249 plus IC444
Powered byPixInsight

Jellyfish Nebula plus SH2-249 plus IC444

Author

bobzeq25

bobzeq25
bobzeq25
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Technical card

Imaging telescopes or lenses: Celestron 8 RASA

Imaging cameras: ZWO ASI2600MCPro

Mounts: CEM60

Guiding telescopes or lenses: Generic 240mm F4 guidescope

Guiding cameras: QHY5III 174M

Software: PixInsight

Filters: Hutech IDAS NBX dual band (Ha+Oiii)

Accessory: Artesky 2 inch filter holder + camera adapter for C8 RASA


Dates:April 1, 2021April 2, 2021

Frames: 239x30" (1h 59' 30") (gain: 100.00) -10C bin 1x1

Integration: 1h 59' 30"

Darks: ~30

Flats: ~30

Bias: ~100

Avg. Moon age: 19.55 days

Avg. Moon phase: 76.07%

Bortle Dark-Sky Scale: 7.00

Mean SQM: 18.40

Mean FWHM: 3.50

Temperature: 10.00


Basic astrometry details

Astrometry.net job: 4373109

RA center: 6h 19' 27"

DEC center: +22° 37' 48"

Pixel scale: 1.939 arcsec/pixel

Orientation: 329.505 degrees

Field radius: 1.552 degrees


Resolution: 4560x3525

Data source: Backyard

Description

First serious image with the C8RASA + ASI2600MC. This is a dim target, difficult in Bortle 7. The GDZ filter was invaluable, but this needs more than 2 hours.

Next year.

SH2-249 is the broad nebula with prominent dark lanes top edge, R of center.

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Jellyfish Nebula plus SH2-249 plus IC444, 



    
        

            bobzeq25