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Sh2-274 Medusa Nebula, 



    
        

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Sh2-274 Medusa Nebula

Imaging telescopes or lenses: Explore Scientific ED102 FCD 100 Air-Spaced Triplet Apochromatic Refractor

Imaging cameras: ZWO ASI294MC PRO ASI294MC PRO

Mounts: Sky-Watcher HEQ5 PRO

Guiding cameras: ZWO ASI120MM guide camera

Focal reducers: Stellarvue 0.8 FF&R

Software: PixInsight  ·  Photoshop CC 2019

Filters: Explore Scientific UHC UHC Nebula Filter  ·  ZWO UV IR Cut 2"

Accessory: ZWO ASIAIR Pro  ·  ZWO EAF Electronic Focuser  ·  ZWO Off-Axis Guider


Dates:Feb. 19, 2021

Frames:Explore Scientific UHC UHC Nebula Filter: 18x300" (gain: 120.00) bin 1x1

Integration: 1.5 hours

Avg. Moon age: 7.13 days

Avg. Moon phase: 47.32%


Astrometry.net job: 4234230

RA center: 7h 29' 8"

DEC center: +13° 14' 0"

Pixel scale: 1.520 arcsec/pixel

Orientation: -84.879 degrees

Field radius: 0.912 degrees


Resolution: 3427x2624

Data source: Backyard

Description

In spite of a 45% illuminated moon last night, went for lengthy exposures on the Medusa Nebula and fortunately it came out thanks to the UHC filter.

Medusa Nebula is a planetary nebula in the constellation of Gemini. It is also known as Abell 21 and Sharpless 2-274 and is located at 1500 LY.

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