Hemisphere:  Northern
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Abell 21 3nm Ha, 



    
        

            Salvatore Giambruno
Abell 21 3nm Ha
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Abell 21 3nm Ha

Technical card

Imaging telescopes or lenses: AG Optical 12.5" iDK

Imaging cameras: Finger Lakes Instrumentation ML 16200

Mounts: Software Bisque Paramount MX+

Guiding telescopes or lenses: AG Optical 12.5" iDK

Guiding cameras: Starlight Xpress Lodestar Autoguider X2

Software: Diffraction Limited Maxim DL 6 Pro  ·  FocusMax V4  ·  DC-3 Dreams ACP Observatory Control Software  ·  TheSkyX Pro  ·  Pleiades Astrophoto, S.L. PixInsight 1.8 Ripley

Filters: Astrodon 3nm Ha

Accessory: Moonlite Nitecrawler WR35  ·  Finger Lake Instruments CFW-2-7


Dates:Dec. 2, 2017

Frames: 50x1200"

Integration: 16.7 hours

Avg. Moon age: 13.41 days

Avg. Moon phase: 97.95%


Basic astrometry details

Astrometry.net job: 1844310

RA center: 7h 28' 59"

DEC center: +13° 15' 3"

Pixel scale: 0.587 arcsec/pixel

Orientation: 349.113 degrees

Field radius: 0.467 degrees


Resolution: 1824x1454

Locations: Home Observatory, Southern California, California, United States

Description

16-2/3 hours 3nm Ha data.
11.3 Mag surface brightness.
Very dim object.

Comments

Author

urthworm
Salvatore Giambruno
License: None (All rights reserved)
621
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Abell 21 3nm Ha, 



    
        

            Salvatore Giambruno