Hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  NGC 2395
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Abell 21 Medusa Nebula, 



    
        

            jackstar
Abell 21 Medusa Nebula
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Abell 21 Medusa Nebula

Getting plate-solving status, please wait...
Abell 21 Medusa Nebula, 



    
        

            jackstar
Abell 21 Medusa Nebula
Powered byPixInsight

Abell 21 Medusa Nebula

Technical card

Imaging telescopes or lenses: Orion EON 115mm ED Triplet APO

Imaging cameras: ZWO ASI2600MC-Pro

Mounts: SkyWatcher EQ6R-Pro

Guiding telescopes or lenses: Skywatcher Evoguide 50mm

Guiding cameras: ZWO ASI1290MM Mini

Software: Adobe Phosotshop CC  ·  PHD2  ·  N.I.N.A.  ·  Astro Pixel Processor

Filters: Optolong L extreme 2''

Accessory: PrimaluceLab Sesto Senso 2 Focuser


Dates:April 5, 2021

Frames:Optolong L extreme 2'': 19x300" (1h 35') (gain: 100.00) -10C

Integration: 1h 35'

Darks: 20

Flats: 30

Flat darks: 30

Avg. Moon age: 23.25 days

Avg. Moon phase: 38.36%

Bortle Dark-Sky Scale: 4.00


Basic astrometry details

Astrometry.net job: 4441328

RA center: 07h29m02s.2

DEC center: +13°1612

Pixel scale: 1.133 arcsec/pixel

Orientation: 29.062 degrees

Field radius: 0.954 degrees


Resolution: 5000x3433

Data source: Backyard

Description

The Medusa nebula, Abell 21, is an old planetary nebula some 1,500 light-years away in the constellation Gemini.

I imaged this April 2021. I only got a short time on the subject due to the position from my location.

I used the optolong L-eXtreme filter for all light frames.

Stacked and processed using Astro pixel processor and photoshop.

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Abell 21 Medusa Nebula, 



    
        

            jackstar